خيارات البحث
النتائج 91 - 100 من 832
Coinfection of some respiratory viruses in cattle: An abattoir study النص الكامل
2024
Saeed, Intisar K. | Ali, Yahia H. | Abdellatif, Muaz Magzoub | Mustafa, Alaa | Abdel-Mageed, Ahmad M.
Coinfection of some respiratory viruses in cattle: An abattoir study النص الكامل
2024
Saeed, Intisar K. | Ali, Yahia H. | Abdellatif, Muaz Magzoub | Mustafa, Alaa | Abdel-Mageed, Ahmad M.
To investigate the existence of bovine viral diarrhoea virus (BVDV), parainfluenza virus 3 (PIV-3) and respiratory syncytial virus (RSV) as well as its coinfections, a total of 420 pneumonic lung tissue samples were collected from slaughterhouses in three different areas. Samples were examined for the three viruses using antigen detection enzyme-linked immunosorbent assay (ELISA) test, and positive results were further confirmed using fluorescent antibody test and polymerase chain reaction. Prevalences detected were 10.47% for BVDV, 11.9% for parainfluenza virus type (PIV-3) and 7.6% for respiratory syncytial virus (RSV). Observed coinfections were bovine viral diarrhoea (BVD) and PIV-3 in 8.1%, BVD and RSV in only two samples (1%). Existence of all three viruses was detected in two samples (1%).Contribution: In this study, infection of the three viruses was confirmed in cattle and existence of its coinfection is documented for the first time.
اظهر المزيد [+] اقل [-]Coinfection of some respiratory viruses in cattle: An abattoir study النص الكامل
2024
Intisar K. Saeed | Yahia H. Ali | Muaz Magzoub Abdellatif | Alaa Mustafa | Ahmad M. Abdel-Mageed
To investigate the existence of bovine viral diarrhoea virus (BVDV), parainfluenza virus 3 (PIV-3) and respiratory syncytial virus (RSV) as well as its coinfections, a total of 420 pneumonic lung tissue samples were collected from slaughterhouses in three different areas. Samples were examined for the three viruses using antigen detection enzyme-linked immunosorbent assay (ELISA) test, and positive results were further confirmed using fluorescent antibody test and polymerase chain reaction. Prevalences detected were 10.47% for BVDV, 11.9% for parainfluenza virus type (PIV-3) and 7.6% for respiratory syncytial virus (RSV). Observed coinfections were bovine viral diarrhoea (BVD) and PIV-3 in 8.1%, BVD and RSV in only two samples (1%). Existence of all three viruses was detected in two samples (1%). Contribution: In this study, infection of the three viruses was confirmed in cattle and existence of its coinfection is documented for the first time.
اظهر المزيد [+] اقل [-]Hepatoprotective effects of leaf extract of Annona senegalensis against aflatoxin B1 toxicity in rats النص الكامل
2024
Makhuvele, Rhulani | Foubert, Kenn | Hermans, Nina | Pieters, Luc | Verschaeve, Luc | Elgorashi, Esameldin | National Research Foundation (NRF | Fonds Wetenschappelijk Onderzoek (FWO) | Flemish Interuniversity Council (VLIR) | Agricultural Research Council (ARC-OVR)
Hepatoprotective effects of leaf extract of Annona senegalensis against aflatoxin B1 toxicity in rats النص الكامل
2024
Makhuvele, Rhulani | Foubert, Kenn | Hermans, Nina | Pieters, Luc | Verschaeve, Luc | Elgorashi, Esameldin | National Research Foundation (NRF | Fonds Wetenschappelijk Onderzoek (FWO) | Flemish Interuniversity Council (VLIR) | Agricultural Research Council (ARC-OVR)
Global aflatoxin contamination of agricultural commodities is of the most concern in food safety and quality. This study investigated the hepatoprotective effect of 80% methanolic leaf extract of Annona senegalensis against aflatoxin B1 (AFB1)-induced toxicity in rats. A. senegalensis has shown to inhibit genotoxicity of aflatoxin B1 in vitro. The rats were divided into six groups including untreated control, aflatoxin B1 only (negative control); curcumin (positive control; 10 mg/kg); and three groups receiving different doses (100 mg/kg, 200 mg/kg, and 300 mg/kg) of A. senegalensis extract. The rats received treatment (with the exception of untreated group) for 7 days prior to intoxication with aflatoxin B1. Serum levels of aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, lactate dehydrogenase, and creatinine were measured. Hepatic tissues were analysed for histological alterations. Administration of A. senegalensis extract demonstrated hepatoprotective effects against aflatoxin B1-induced toxicity in vivo by significantly reducing the level of serum aspartate aminotransferase and alanine aminotransferase and regenerating the hepatocytes. No significant changes were observed in the levels of alkaline phosphatase, lactate dehydrogenase, and creatinine for the AFB1 intoxicated group, curcumin+AFB1 and Annona senegalensis leaf extract (ASLE)+AFB1 (100 mg/kg, 200 mg/kg, and 300 mg/kg body weight [b.w.]) treated groups. Annona senegalensis is a good candidate for hepatoprotective agents and thus its use in traditional medicine may at least in part be justified.Contribution: The plant extract investigated in this study can be used in animal health to protect the organism from toxicity caused by mycotoxins.
اظهر المزيد [+] اقل [-]Hepatoprotective effects of leaf extract of Annona senegalensis against aflatoxin B1 toxicity in rats النص الكامل
2024
Rhulani Makhuvele | Kenn Foubert | Nina Hermans | Luc Pieters | Luc Verschaeve | Esameldin Elgorashi
Global aflatoxin contamination of agricultural commodities is of the most concern in food safety and quality. This study investigated the hepatoprotective effect of 80% methanolic leaf extract of Annona senegalensis against aflatoxin B1 (AFB1)-induced toxicity in rats. A. senegalensis has shown to inhibit genotoxicity of aflatoxin B1 in vitro. The rats were divided into six groups including untreated control, aflatoxin B1 only (negative control); curcumin (positive control; 10 mg/kg); and three groups receiving different doses (100 mg/kg, 200 mg/kg, and 300 mg/kg) of A. senegalensis extract. The rats received treatment (with the exception of untreated group) for 7 days prior to intoxication with aflatoxin B1. Serum levels of aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, lactate dehydrogenase, and creatinine were measured. Hepatic tissues were analysed for histological alterations. Administration of A. senegalensis extract demonstrated hepatoprotective effects against aflatoxin B1-induced toxicity in vivo by significantly reducing the level of serum aspartate aminotransferase and alanine aminotransferase and regenerating the hepatocytes. No significant changes were observed in the levels of alkaline phosphatase, lactate dehydrogenase, and creatinine for the AFB1 intoxicated group, curcumin+AFB1 and Annona senegalensis leaf extract (ASLE)+AFB1 (100 mg/kg, 200 mg/kg, and 300 mg/kg body weight [b.w.]) treated groups. Annona senegalensis is a good candidate for hepatoprotective agents and thus its use in traditional medicine may at least in part be justified. Contribution: The plant extract investigated in this study can be used in animal health to protect the organism from toxicity caused by mycotoxins.
اظهر المزيد [+] اقل [-]Taenia saginata prevalence in cattle slaughtered at low throughput abattoirs in South Africa النص الكامل
2024
Dube, Mbali P. | Byaruhanga, Charles | Dorny, Pierre | Dermauw, Veronique | Qekwana, Daniel N. | Belgian Directorate-General for Development Cooperation | Institute for Tropical Medicine
Taenia saginata prevalence in cattle slaughtered at low throughput abattoirs in South Africa النص الكامل
2024
Dube, Mbali P. | Byaruhanga, Charles | Dorny, Pierre | Dermauw, Veronique | Qekwana, Daniel N. | Belgian Directorate-General for Development Cooperation | Institute for Tropical Medicine
Meat inspection is the routine method used to identify cattle infected with Taenia saginata; however, the sensitivity of this method is low. We investigated the prevalence of T. saginata infection in cattle slaughtered in low throughput abattoirs (LTs) in Gauteng province, South Africa, based on meat inspection and serology. A total of 188 cattle carcasses from three abattoirs underwent meat inspection for the presence of T. saginata cysticerci, while serum was tested for the occurrence of antigens using antigen enzyme-linked immunosorbent assay (Ag-ELISA). Polymerase chain reaction (PCR)-sequencing was performed to confirm T. saginata cysts identified during enhanced inspection and incision of 10 randomly selected hearts. Apparent and true prevalence were calculated, and a logistic regression model was fit to evaluate associations between abattoir, sex, animal origin, age and T. saginata serological status. Out of the 188 carcasses, no positive cases (0%) were identified during routine meat inspection, yet three cysticerci-like lesions were identified from three hearts following additional incisions, of which one was confirmed as T. saginata. Fifty-four of the sampled cattle carcasses tested positive using Ag-ELISA (apparent and true prevalence: 29.0%, 71.8%). Feedlot cattle were less likely (odds ratios [OR]: 0.33, p = 0.043) to have a positive serological test result for T. saginata compared to non-feedlot cattle, and the odds of a positive result differed between abattoirs (p 0.05).Contribution: Our results confirmed the low sensitivity of routine meat inspection in LTs, which may pose a public health risk, and therefore other diagnostic methods need to be included in the surveillance system for T. saginata.
اظهر المزيد [+] اقل [-]Taenia saginata prevalence in cattle slaughtered at low throughput abattoirs in South Africa النص الكامل
2024
Mbali P. Dube | Charles Byaruhanga | Pierre Dorny | Veronique Dermauw | Daniel N. Qekwana
Meat inspection is the routine method used to identify cattle infected with Taenia saginata; however, the sensitivity of this method is low. We investigated the prevalence of T. saginata infection in cattle slaughtered in low throughput abattoirs (LTs) in Gauteng province, South Africa, based on meat inspection and serology. A total of 188 cattle carcasses from three abattoirs underwent meat inspection for the presence of T. saginata cysticerci, while serum was tested for the occurrence of antigens using antigen enzyme-linked immunosorbent assay (Ag-ELISA). Polymerase chain reaction (PCR)-sequencing was performed to confirm T. saginata cysts identified during enhanced inspection and incision of 10 randomly selected hearts. Apparent and true prevalence were calculated, and a logistic regression model was fit to evaluate associations between abattoir, sex, animal origin, age and T. saginata serological status. Out of the 188 carcasses, no positive cases (0%) were identified during routine meat inspection, yet three cysticerci-like lesions were identified from three hearts following additional incisions, of which one was confirmed as T. saginata. Fifty-four of the sampled cattle carcasses tested positive using Ag-ELISA (apparent and true prevalence: 29.0%, 71.8%). Feedlot cattle were less likely (odds ratios [OR]: 0.33, p = 0.043) to have a positive serological test result for T. saginata compared to non-feedlot cattle, and the odds of a positive result differed between abattoirs (p 0.05). Contribution: Our results confirmed the low sensitivity of routine meat inspection in LTs, which may pose a public health risk, and therefore other diagnostic methods need to be included in the surveillance system for T. saginata.
اظهر المزيد [+] اقل [-]Detection and seroprevalence of Q fever infection in dairy goats in Besut district, Malaysia النص الكامل
2024
Ahmad, Khairunnisa | Nik Mustaffa, Nik Danial Asyraf | Azmi, Nur Syafiqa | Ariffin, Siti Mariam Zainal | Ghazali, Mohd Faizal Bin | Ibrahim, Noor Syaheera
Detection and seroprevalence of Q fever infection in dairy goats in Besut district, Malaysia النص الكامل
2024
Ahmad, Khairunnisa | Nik Mustaffa, Nik Danial Asyraf | Azmi, Nur Syafiqa | Ariffin, Siti Mariam Zainal | Ghazali, Mohd Faizal Bin | Ibrahim, Noor Syaheera
Objective: This study aimed to investigate the seroprevalence of Q fever and its association with age and gender among Saanen dairy goats in Malaysia. Material and Methods: One hundred dairy goats (n = 100) aged 6 months to 6 years were randomly selected, and blood samples were collected for serological analysis using the enzymelinked immunosorbent assay technique. Results: The results revealed a seropositive rate of 70% among the goats, with medium-positive titers being the most common. The prevalence of Q fever varied among different age groups, with higher rates observed in adult goats aged between 5 and 6 years. Gender analysis showed that males had a higher positive rate (p < 0.05) of Q fever compared to females. Conclusion: These findings strongly indicate the presence of Coxiella burnetii in the dairy goat population and highlight the importance of implementing biosecurity measures and control strategies to prevent further transmission of this disease. This research has contributed to a better understanding of Q fever epidemiology and provides insights for effective control and prevention strategies in dairy goat populations. Adv. Vet. Anim. Res., 11(2): 231-236, June 2024 DOI: http://doi.org/10.5455/javar.2024.k768
اظهر المزيد [+] اقل [-]Detection and seroprevalence of Q fever infection in dairy goats in Besut district, Malaysia النص الكامل
2024
Khairunnisa Ahmad | Nik Danial Asyraf Nik Mustaffa | Nur Syafiqa Azmi | Siti Mariam Zainal Ariffin | Mohd Faizal Bin Ghazali | Noor Syaheera Ibrahim
Objective: This study aimed to investigate the seroprevalence of Q fever and its association with age and gender among Saanen dairy goats in Malaysia. Material and Methods: One hundred dairy goats (n = 100) aged 6 months to 6 years were ran¬domly selected, and blood samples were collected for serological analysis using the enzyme-linked immunosorbent assay technique. Results: The results revealed a seropositive rate of 70% among the goats, with medium-positive titers being the most common. The prevalence of Q fever varied among different age groups, with higher rates observed in adult goats aged between 5 and 6 years. Gender analysis showed that males had a higher positive rate (p < 0.05) of Q fever compared to females. Conclusion: These findings strongly indicate the presence of Coxiella burnetii in the dairy goat population and highlight the importance of implementing biosecurity measures and control strategies to prevent further transmission of this disease. This research has contributed to a better understanding of Q fever epidemiology and provides insights for effective control and prevention strategies in dairy goat populations. [J Adv Vet Anim Res 2024; 11(2.000): 231-236]
اظهر المزيد [+] اقل [-]The employment of real-time polymerase chain reaction for analysis of canine meat in meatball products for halal authentication analysis النص الكامل
2024
Rumiyati, Rumiyati | Arini, Rien Larasati | Purwanto, Purwanto | Rohman, Abdul
Objective: Meatballs are a popular meat-based food consumed widely in Indonesian society. However, the issue of unethical substitution of halal meatballs with non-halal meats, particularly pork and canine meat (CM), has emerged. The existence of non-halal meats, including CM, in food products is prohibited in Islam, necessitating the development of reliable analytical techniques for their identification. In this study, we designed species-specific primers (SSPs) targeting the D-loop region of mitochondrial DNA for CM meatball product identification. Materials and Methods: The study was commenced by creating specific primers for canine DNA using Integrated DNA Technologies software and subsequently performing DNA isolation. The designed primers were then subjected to comprehensive evaluation using RT-PCR, including specification, linearity, limit of detection, efficiency, and repeatability. Results: The results indicated that the primer D-Loop 443 (forward: 5’-GGG ACA TCT CGA TGG ACTA ATG-3’, reverse: 5’-GCG GTC ATA GAT GAG TGA TAG C-3’) designed and validated in silico using primer-basic local alignment search tool nucleotide (BLAST) program from NCBI accurately identified canine DNA when the optimal annealing temperature was set at 57.5oC. The real-time PCR technique utilizing the D-loop 443 primer exhibited the ability to amplify canine DNA down to a minimum quantity of 100 pg, with an efficiency value of 91.8%, a correlation coefficient (R) of 0.990, and a precision value (RSD) of 0.30%. Conclusion: The SSP-based RT-PCR method developed is a versatile and efficient tool for detecting CM in meatballs. Its implementation helps maintain consumer trust and addresses concerns regarding the substitution of halal meats with non-halal alternatives. Adv. Vet. Anim. Res., 11(2): 247-253, June 2024 http://doi.org/10.5455/javar.2024.k770
اظهر المزيد [+] اقل [-]Evaluation of the effectiveness of some essential oils against zoonotic methicillinresistant Staphylococcus aureus isolated from dairy products and humans النص الكامل
2024
Salman, Marwa B | Abdelaziz Zin Eldin, Asmaa Ibrahim | Eissa, Nourhan | Maher, Ahmed | Aish, Abd Elghany | El Moez, Sherein I Abd
Evaluation of the effectiveness of some essential oils against zoonotic methicillinresistant Staphylococcus aureus isolated from dairy products and humans النص الكامل
2024
Salman, Marwa B | Abdelaziz Zin Eldin, Asmaa Ibrahim | Eissa, Nourhan | Maher, Ahmed | Aish, Abd Elghany | El Moez, Sherein I Abd
Objective: Staphylococcus aureus (S. aureus) is a zooanthroponotic, nosocomial, and community- associated pathogen that threatens livestock management and even public health. The goal of this investigation was to clarify the role of S. aureus in zoonotic illnesses. Besides that, a novel trial was conducted in the current Egyptian study using oil extracts such as cactus oil, tea oil, geranium oil, and thyme oil to demonstrate the susceptibility of methicillin-resistant S. aureus (MRSA) isolates to these organic oils in response to the alarming global concern regarding the decreased susceptibility of S. aureus to known antibiotics, which exacerbates control and treatment protocols. Material and Methods: A total of 110 samples (45 raw cattle milk samples, 35 Karish cheese samples, and 30 human sputum samples) were collected. The bacterium was identified via traditional culturing methods, Gram staining, and the application of several biochemical tests. After that, various kinds of known commercial antibiotics were used to detect the antimicrobial susceptibility (AMS) of the obtained isolates. Furthermore, conventional polymerase chain reaction (PCR) testing was performed to identify S. aureus (nuc gene) and MRSA (mecA gene), with further application of multiplex PCR for screening of all the obtained isolates for vancomycin resistance via targeting vanA, vanB, and vanC genes. Finally, the agar gel diffusion method was performed to assess the antibacterial activity of four plant extracts (cactus oil, tea oil, geranium oil, and thyme oil) against the obtained MRSA. Results: The culturing method revealed S. aureus positivity in raw cattle milk (13.33%), in Karish cheese (28.57%), and in human samples (20%). The obtained isolates showed mainly resistance to amoxicillin-clavulanic and ampicillin antibiotics, while the dairy samples showed further resistance against ceptaxime and an intermediate reaction against erythromycin. On the molecular side, PCR positivity was present in human samples (10%), raw cow milk (13.33%), and Karish cheese (14.29%). Nine of the fourteen PCR isolates were methicillin-resistant S. aureus (MRSA) isolates. Comparing the four oil extracts against the acquired MRSA isolates, cactus oil extract proved to be the most effective. Conclusion: The study’s results are highly promising as they support the notion that certain essential oils possess strong antimicrobial properties against zoonotic S. aureus, thereby reducing the excessive use of antibiotics in veterinary and medical settings. Adv. Vet. Anim. Res., 11(2): 306-316, June 2024 http://doi.org/10.5455/javar.2024.k778
اظهر المزيد [+] اقل [-]Evaluation of the effectiveness of some essential oils against zoonotic methicillin-resistant Staphylococcus aureus isolated from dairy products and humans النص الكامل
2024
Marwa B. Salman | Asmaa Ibrahim Abdelaziz Zin Eldin | Nourhan Eissa | Ahmed Maher | Abd-Elghany Aish | Sherein I. Abd El-Moez
Objective: Staphylococcus aureus (S. aureus) is a zooanthroponotic, nosocomial, and communi¬ty-associated pathogen that threatens livestock management and even public health. The goal of this investigation was to clarify the role of S. aureus in zoonotic illnesses. Besides that, a novel trial was conducted in the current Egyptian study using oil extracts such as cactus oil, tea oil, geranium oil, and thyme oil to demonstrate the susceptibility of methicillin-resistant S. aureus (MRSA) iso¬lates to these organic oils in response to the alarming global concern regarding the decreased sus¬ceptibility of S. aureus to known antibiotics, which exacerbates control and treatment protocols. Material and Methods: A total of 110 samples (45 raw cattle milk samples, 35 Karish cheese samples, and 30 human sputum samples) were collected. The bacterium was identified via traditional culturing methods, Gram staining, and the application of several biochemical tests. After that, various kinds of known commercial antibiotics were used to detect the antimicrobial susceptibility (AMS) of the obtained isolates. Furthermore, conventional polymerase chain reaction (PCR) testing was performed to identify S. aureus (nuc gene) and MRSA (mecA gene), with further application of multiplex PCR for screening of all the obtained isolates for vancomycin resistance via targeting vanA, vanB, and vanC genes. Finally, the agar gel diffusion method was performed to assess the antibacterial activity of four plant extracts (cactus oil, tea oil, geranium oil, and thyme oil) against the obtained MRSA. Results: The culturing method revealed S. aureus positivity in raw cattle milk (13.33%), in Karish cheese (28.57%), and in human samples (20%). The obtained isolates showed mainly resistance to amoxicillin-clavulanic and ampicillin antibiotics, while the dairy samples showed further resis¬tance against ceptaxime and an intermediate reaction against erythromycin. On the molecular side, PCR positivity was present in human samples (10%), raw cow milk (13.33%), and Karish cheese (14.29%). Nine of the fourteen PCR isolates were methicillin-resistant S. aureus (MRSA) isolates. Comparing the four oil extracts against the acquired MRSA isolates, cactus oil extract proved to be the most effective. Conclusion: The study's results are highly promising as they support the notion that certain essential oils possess strong antimicrobial properties against zoonotic S. aureus, thereby reducing the excessive use of antibiotics in veterinary and medical settings. [J Adv Vet Anim Res 2024; 11(2.000): 306-316]
اظهر المزيد [+] اقل [-]Characterization of infectious laryngotracheitis virus isolated from commercial layer chickens in Bangladesh during the year 2021–2022 النص الكامل
2024
Kamal, Md Mostofa | Sadekuzzaman, Mohammad | Parvin, Kohinoor | Haque, Md Enamul | Hayat, Sajedul | Islam, Md Ariful | Khatun, Mst Minara | Siddique, Mahbubul Pratik | Nahar, Sham Soun | Khasruzzaman, A K M | Hossain, Muhammud Tofazzal | Islam, Md Alimul
Characterization of infectious laryngotracheitis virus isolated from commercial layer chickens in Bangladesh during the year 2021–2022 النص الكامل
2024
Kamal, Md Mostofa | Sadekuzzaman, Mohammad | Parvin, Kohinoor | Haque, Md Enamul | Hayat, Sajedul | Islam, Md Ariful | Khatun, Mst Minara | Siddique, Mahbubul Pratik | Nahar, Sham Soun | Khasruzzaman, A K M | Hossain, Muhammud Tofazzal | Islam, Md Alimul
Objective: Infectious laryngotracheitis virus (ILTV) is responsible for causing infectious laryngotracheitis (ILT), which is a rapidly spreading and extremely transmissible disease in chickens. The current research aims to isolate and characterize ILTV from layer chickens in Bangladesh. Materials and Methods: A total of 345 samples (trachea, larynx, and lungs) were collected from ILT-suspected dead and sick layer chickens of 32 ILT-suspected farms in three different outbreak districts (Gazipur, Tangail, and Mymensingh) of Bangladesh during the outbreak year 2021-2022. Rapid detection kits examined the samples for avian influenza virus (AIV) and Newcastle disease virus (NDV). ILTV-specific primers were used to screen 72 NDV- and AIV-negative samples by polymerase chain reaction (PCR). Using chorioallantoic membrane (CAM), the study isolated the ILT virus from 9 to 10-day-old seronegative embryonated chicken eggs (ECEs) using selected PCR-positive samples. The virus was confirmed using nucleotide sequencing, agar gel immunodiffusion test (AGIDT), viral neutralization test (VNT), and pathogenicity evaluations using mortality index for chicken embryos (MICEs) and intra-tracheal pathogenicity index (ITPI). Results: The results indicated that among the PCR-positive 10 samples, only two (Alim_ILT_1001 and Alim_ILT_1,000) were found positive using ECEs. There were two field isolates of ILTVs, as shown by the amplicon size of the ICP4 gene-based PCR. A phylogenetic study of the ICP4 gene revealed that the recent isolates have a close similarity with the ILTV isolates of Turkey, Bangladesh, and Australia. AGIDT revealed strong precipitation lines due to ILTV-specific antibodies reacting with field viruses, while VNT neutralized both isolates with conventional ILTV antibodies. The pathogenicity testing indicated that Alim_ILT_1001 had MICE and ITPI values of 0.77 and 0.63, whereas Alim_ILT_1,000 had 0.71 and 0.57. Conclusion: Both the ILTV isolates have similarities with the isolates of Turkey, Bangladesh, and Australia, and they are highly virulent for chickens. Adv. Vet. Anim. Res., 11(2): 398-407, June 2024 http://doi.org/10.5455/javar.2024.k789
اظهر المزيد [+] اقل [-]Characterization of infectious laryngotracheitis virus isolated from commercial layer chickens in Bangladesh during the year 2021–2022 النص الكامل
2024
Md. Mostofa Kamal | Mohammad Sadekuzzaman | Mst. Kohinoor Parvin | Md. Enamul Haque | Sajedul Hayat | Md. Ariful Islam | Mst. Minara Khatun | Mahbubul Pratik Siddique | Mohammud Tofazzal Hossain | Sham Soun Nahar | A. K. M. Khasruzzaman | Md. Alimul Islam
Objective: Infectious laryngotracheitis virus (ILTV) is responsible for causing infectious laryngo¬tracheitis (ILT), which is a rapidly spreading and extremely transmissible disease in chickens. The current research aims to isolate and characterize ILTV from layer chickens in Bangladesh. Materials and Methods: A total of 345 samples (trachea, larynx, and lungs) were collected from ILT-suspected dead and sick layer chickens of 32 ILT-suspected farms in three different outbreak districts (Gazipur, Tangail, and Mymensingh) of Bangladesh during the outbreak year 2021-2022. Rapid detection kits examined the samples for avian influenza virus (AIV) and Newcastle disease virus (NDV). ILTV-specific primers were used to screen 72 NDV- and AIV-negative samples by poly¬merase chain reaction (PCR). Using chorioallantoic membrane (CAM), the study isolated the ILT virus from 9 to 10-day-old seronegative embryonated chicken eggs (ECEs) using selected PCR-positive samples. The virus was confirmed using nucleotide sequencing, agar gel immunodiffusion test (AGIDT), viral neutralization test (VNT), and pathogenicity evaluations using mortality index for chicken embryos (MICEs) and intra-tracheal pathogenicity index (ITPI). Results: The results indicated that among the PCR-positive 10 samples, only two (Alim_ILT_1001 and Alim_ILT_1,000) were found positive using ECEs. There were two field isolates of ILTVs, as shown by the amplicon size of the ICP4 gene-based PCR. A phylogenetic study of the ICP4 gene revealed that the recent isolates have a close similarity with the ILTV isolates of Turkey, Bangladesh, and Australia. AGIDT revealed strong precipitation lines due to ILTV-specific antibod¬ies reacting with field viruses, while VNT neutralized both isolates with conventional ILTV antibod¬ies. The pathogenicity testing indicated that Alim_ILT_1001 had MICE and ITPI values of 0.77 and 0.63, whereas Alim_ILT_1,000 had 0.71 and 0.57. Conclusion: Both the ILTV isolates have similarities with the isolates of Turkey, Bangladesh, and Australia, and they are highly virulent for chickens. [J Adv Vet Anim Res 2024; 11(2.000): 398-407]
اظهر المزيد [+] اقل [-]Characterization of the dominant strain (G-VII) of Newcastle disease viruses isolated from commercial chickens in Bangladesh during recent outbreaks النص الكامل
2024
Haque, Mohammad Aynul | Sadekuzzaman, Mohammad | Haque, Md Enamul | Parvin, Mst Kohinoor | Kamal, Md Mostofa | Hayat, Sajedul | Islam, Md Ariful | Khatun, Mst Minara | Siddique, Mahbubul Pratik | Nahar, Sham Soun | Khasruzzaman, A K M | Hossain, Muhammud Tofazzal | Islam, Md Alimul
Characterization of the dominant strain (G-VII) of Newcastle disease viruses isolated from commercial chickens in Bangladesh during recent outbreaks النص الكامل
2024
Haque, Mohammad Aynul | Sadekuzzaman, Mohammad | Haque, Md Enamul | Parvin, Mst Kohinoor | Kamal, Md Mostofa | Hayat, Sajedul | Islam, Md Ariful | Khatun, Mst Minara | Siddique, Mahbubul Pratik | Nahar, Sham Soun | Khasruzzaman, A K M | Hossain, Muhammud Tofazzal | Islam, Md Alimul
Objective: Newcastle disease virus genotype VII (NDV-GVII), an extremely infectious pathogen, has been causing severe economic consequences for the chicken industry. The current study aimed to isolate and characterize NDV-GVII from commercial chickens in Bangladesh during a recent outbreak. Materials and Methods: From clinically suspected chickens from 70 commercial poultry farms, a total of 420 samples (trachea, lungs, and brain tissue) were collected. The samples were cultivated in 9–10 day-old seronegative embryonated chicken eggs (ECEs) after evaluating them using the rapid Newcastle disease virus (NDV) antigen detection kit. The hemagglutination (HA) inhibition test, agar gel immune diffusion (AGID) test, molecular detection by reverse transcription-polymerase chain reaction (RT-PCR), and phylogenetic studies using gene sequences of fusion (F) protein. The HA pattern of isolated NDV was determined using different avian and mammalian red blood cells (RBCs). The pathogenicity of the isolated virus was evaluated using mean death time (MDT), intravenous pathogenicity index (IVPI), and intracerebral pathogenicity index (ICPI). Results: The study found 87 NDV samples positive using the rapid NDV Ag detection kit and then 60 positives for virus isolation in ECEs. All 60 isolates were positive for NDV by HI, AGID, and RT-PCR. Phylogenetic tree analysis indicated that recent NDV isolates belong to genotype VII and exhibit a similarity of 99.7%–98.5% with isolates from Bangladesh, Iran, and India. The new isolates, identified as velogenic strains of NDV, possess an F protein cleavage site with 112-R-T-K-R-F-117 amino acid motifs. The isolated NDV showed diversified HA activity while using RBCs from birds and mammals. The results of ICPI, IVPI, and MDT indicated that the recent NDV isolates were very virulent. Conclusion: This study concluded that NDV-GVII is prevalent in commercial poultry farms in Bangladesh. Adv. Vet. Anim. Res., 11(2): 408-417, June 2024 http://doi.org/10.5455/javar.2024.k790
اظهر المزيد [+] اقل [-]Characterization of the dominant strain (G-VII) of Newcastle disease viruses isolated from commercial chickens in Bangladesh during recent outbreaks النص الكامل
2024
Mohammad Aynul Haque | Mohammad Sadekuzzaman | Md. Enamul Haque | Mst. Kohinoor Parvin | Md. Mostofa Kamal | Sajedul Hayat | Md. Ariful Islam | Mst. Minara Khatun | Mahbubul Pratik Siddique | Sham Soun Nahar | A. K. M. Khasruzzaman | Mohammud Tofazzal Hossain | Md. Alimul Islam
Objective: Newcastle disease virus genotype VII (NDV-GVII), an extremely infectious pathogen, has been causing severe economic consequences for the chicken industry. The current study aimed to isolate and characterize NDV-GVII from commercial chickens in Bangladesh during a recent outbreak. Materials and Methods: From clinically suspected chickens from 70 commercial poultry farms, a total of 420 samples (trachea, lungs, and brain tissue) were collected. The samples were cultivated in 9–10 day-old seronegative embryonated chicken eggs (ECEs) after evaluating them using the rapid Newcastle disease virus (NDV) antigen detection kit. The hemagglutination (HA) inhibition test, agar gel immune diffusion (AGID) test, molecular detection by reverse transcription-poly¬merase chain reaction (RT-PCR), and phylogenetic studies using gene sequences of fusion (F) pro¬tein. The HA pattern of isolated NDV was determined using different avian and mammalian red blood cells (RBCs). The pathogenicity of the isolated virus was evaluated using mean death time (MDT), intravenous pathogenicity index (IVPI), and intracerebral pathogenicity index (ICPI). Results: The study found 87 NDV samples positive using the rapid NDV Ag detection kit and then 60 positives for virus isolation in ECEs. All 60 isolates were positive for NDV by HI, AGID, and RT-PCR. Phylogenetic tree analysis indicated that recent NDV isolates belong to genotype VII and exhibit a similarity of 99.7%–98.5% with isolates from Bangladesh, Iran, and India. The new iso¬lates, identified as velogenic strains of NDV, possess an F protein cleavage site with 112-R-T-K-R-F-117 amino acid motifs. The isolated NDV showed diversified HA activity while using RBCs from birds and mammals. The results of ICPI, IVPI, and MDT indicated that the recent NDV isolates were very virulent. Conclusion: This study concluded that NDV-GVII is prevalent in commercial poultry farms in Bangladesh. [J Adv Vet Anim Res 2024; 11(2.000): 408-417]
اظهر المزيد [+] اقل [-]Treatment of D-galactose-induced rat polycystic ovarian condition using Lepidium sativum and secondary antibodies النص الكامل
2024
Alharbi, Yousef | Alkhail, Abdulrahman Aba | Zaki, Abdel Kader
Treatment of D-galactose-induced rat polycystic ovarian condition using Lepidium sativum and secondary antibodies النص الكامل
2024
Alharbi, Yousef | Alkhail, Abdulrahman Aba | Zaki, Abdel Kader
Objective: There is still much to be discovered regarding the etiopathogenesis and management of polycystic ovarian syndrome (PCOS). Materials and Methods: Four groups of female Wister-Albino rats were established, each with a normal estrous cycle: control, D ( + ) galactose (D-galactose), Lepidium sativum (L. sativum), and prepared secondary antibody (Ab2). Serum samples were collected, and histopathological examination was performed on ovaries and spleen tissues. Immunoreactive anti-ovarian antibody (AOA) quantities were determined using a modified antigen-based ELISA procedure. ELISA assay kits were used to quantify FSH, LH, and estradiol 17 β concentrations. Results: The study found that AOA concentration in undiluted samples was significantly higher in the second and fourth weeks after PCOS induction by D-galactose (p < 0.001). However, antibody index% and titer elevated in the D-galactose group. L. sativum’s late efficacy was observed in the fourth week, while the concentration of undiluted samples in the D-galactose + Ab2 group lowered (p < 0.001). Higher basal FSH and LH levels and lower estrogen levels are associated with PCOS development. L. sativum’s immunomodulatory properties may contribute to this association. Estradiol-17ß concentrations increased in D-galactose + L. sativum and D-galactose + Ab2 groups, respectively. Conclusion: Careful extrapolation of experimental models is crucial for clinical applications, as technical advancements make Ab2 production easier. Further study is needed to fully understand its potential in immunotherapy. Adv. Vet. Anim. Res., 11(2): 418-428, June 2024 http://doi.org/10.5455/javar.2024.k791
اظهر المزيد [+] اقل [-]Treatment of D-galactose-induced rat polycystic ovarian condition using Lepidium sativum and secondary antibodies النص الكامل
2024
Yousef Alharbi | Abdulrahman Aba Alkhail | Abdel-Kader Zaki
Objective: There is still much to be discovered regarding the etiopathogenesis and management of polycystic ovarian syndrome (PCOS). Materials and Methods: Four groups of female Wister-Albino rats were established, each with a normal estrous cycle: control, D ( + ) galactose (D-galactose), Lepidium sativum (L. sativum), and prepared secondary antibody (Ab2). Serum samples were collected, and histopathological examination was performed on ovaries and spleen tissues. Immunoreactive anti-ovarian antibody (AOA) quantities were determined using a modified antigen-based ELISA procedure. ELISA assay kits were used to quantify FSH, LH, and estradiol 17 β concentrations. Results: The study found that AOA concentration in undiluted samples was significantly higher in the second and fourth weeks after PCOS induction by D-galactose (p < 0.001). However, antibody index% and titer elevated in the D-galactose group. L. sativum's late efficacy was observed in the fourth week, while the concentration of undiluted samples in the D-galactose + Ab2 group lowered (p < 0.001). Higher basal FSH and LH levels and lower estrogen levels are associated with PCOS development. L. sativum's immunomodulatory properties may contribute to this associa¬tion. Estradiol-17ß concentrations increased in D-galactose + L. sativum and D-galactose + Ab2 groups, respectively. Conclusion: Careful extrapolation of experimental models is crucial for clinical applications, as technical advancements make Ab2 production easier. Further study is needed to fully understand its potential in immunotherapy. [J Adv Vet Anim Res 2024; 11(2.000): 418-428]
اظهر المزيد [+] اقل [-]Phaneroptic characterization and zoometric indices of Creole goats in the Ayacucho Region, Peru: First step for breeding programs, selection, and conservation النص الكامل
2024
Guerrera, Walter Palomino | Estrada, Yeferson Laimes | Padilla, David Godoy | Luis, Juancarlos Cruz | Zárate, Fritz Trillo
Phaneroptic characterization and zoometric indices of Creole goats in the Ayacucho Region, Peru: First step for breeding programs, selection, and conservation النص الكامل
2024
Guerrera, Walter Palomino | Estrada, Yeferson Laimes | Padilla, David Godoy | Luis, Juancarlos Cruz | Zárate, Fritz Trillo
Objective: The purpose of this study is to evaluate the phenotypic characteristics and typification of Creole goats in five localities of the Ayacucho region in south-central Peru. Materials and Methods: Data from 149 goats (25 males and 124 females) were collected, excluding animals under 2 years of age, pregnant, and sick. Seven qualitative characteristics and 11 zometric measurements were evaluated, and then 9 zometric indices were estimated. Results: In the region, goats with composite colors predominated (76.50%). Additionally, supernumerary (24.20%) and divergent teats (22.60%) were observed in females, while males exhibited a scrotal bifurcation (32.00%). The origin of the flock had a significant effect (p < 0.05) on body measurements, as well as on pelvic index, transverse pelvic index, longitudinal pelvic index, compactness index, and load cannon bone index, except for body index (BOI), proportionality index, dactyl thorax index (DTI), and relative cannon bone thickness index (p > 0.05). In the Ayacucho region, there is a predominance of light animals (57.72%) with a significant DTI (p < 0.05) among the populations, including goats with good balance and capable of walking long distances. Furthermore, there are compact animals (47.65%) with a significant BOI (p < 0.05) among the flock populations, which animals are of the biotype of meat. Conversely, the strongest positive correlation (r = 0.89) was discovered between chest girth and body weight. Conclusion: In the Ayacucho region, there are various creole goat biotypes range from light to very compact heavy goats, with a predominance of meat biotype animals, as well as a marked size dimorphism between localities of origin. Adv. Vet. Anim. Res., 11(2): 494-502, June 2024 http://doi.org/10.5455/javar.2024.k799
اظهر المزيد [+] اقل [-]Phaneroptic characterization and zoometric indices of Creole goats in the Ayacucho Region, Peru: First step for breeding programs, selection, and conservation النص الكامل
2024
Walter Palomino-Guerrera | Yeferson Laimes Estrada | David Godoy Padilla | Juancarlos Cruz Luis | Fritz Trillo Zarate
Objective: The purpose of this study is to evaluate the phenotypic characteristics and typification of Creole goats in five localities of the Ayacucho region in south-central Peru. Materials and Methods: Data from 149 goats (25 males and 124 females) were collected, excluding animals under 2 years of age, pregnant, and sick. Seven qualitative characteristics and 11 zometric measurements were evaluated, and then 9 zometric indices were estimated. Results: In the region, goats with composite colors predominated (76.50%). Additionally, supernumerary (24.20%) and divergent teats (22.60%) were observed in females, while males exhibited a scrotal bifurcation (32.00%). The origin of the flock had a significant effect (p < 0.05) on body measurements, as well as on pelvic index, transverse pelvic index, longitudinal pelvic index, compactness index, and load cannon bone index, except for body index (BOI), proportionality index, dactyl thorax index (DTI), and relative cannon bone thickness index (p > 0.05). In the Ayacucho region, there is a predominance of light animals (57.72%) with a significant DTI (p < 0.05) among the populations, including goats with good balance and capable of walking long distances. Furthermore, there are compact animals (47.65%) with a significant BOI (p < 0.05) among the flock populations, which animals are of the biotype of meat. Conversely, the strongest positive correlation (r = 0.89) was discovered between chest girth and body weight. Conclusion: In the Ayacucho region, there are various creole goat biotypes range from light to very compact heavy goats, with a predominance of meat biotype animals, as well as a marked size dimorphism between localities of origin. [J Adv Vet Anim Res 2024; 11(2.000): 494-502]
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