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In silico analysis of PirA- and PirB-like toxin genes of Vibrio spp., present in Asia and Costa Rica Полный текст
2020
Arren Christian M. De Guia | Jaypee S. Samson | Mary Rose D. Uy
Objective: Acute hepatopancreatic necrosis disease is an emerging infectious disease of Penaeus species. The causative agent is Vibrio species, which dispels binary toxin similar to pirA and pirB, which causes mortality in infected shrimp. The aim of this research was to investigate the evolu¬tionary relationship of pirA and pirB homologous genes present in this Asia and Costa Rica in silico. Materials and methods: The sequences for in silico analysis were all retrieved from the Basic Local Alignment Search Tool Nucleotide (BLASTN) tool of the National Center for Biotechnology Center. For pirA, a total of 25 sequences submitted from different Asian countries and Costa Rica were retrieved for analysis. Meanwhile, for pirB, a total of 11 sequences submitted from five Asian countries were retrieved. Sequences were aligned using the CLUSTAL W alignment tool under Molecular Evolutionary Genetics Analysis (MEGA) 7 software. The evolutionary history was then estimated using the Unweighted Pair Group Method with Arithmetic mean (UPGMA) method, whereas the evolutionary distances were determined using the maximum composite likelihood model with 1,000 bootstrap replications. Results and Discussion: The results show that, among 27 DNA sequences analyzed for pirA gene, three groups were generated, while for pirB, 13 DNA sequences yielded only one group. The anal¬ysis revealed low genetic variation among isolates for both pirA and pirB genes. Conclusion: This result suggests that the low frequency of polymorphism and geographic location cannot be attributed to the differences in V. parahaemolyticus isolates in Asian countries relative to Costa Rican isolates in pirA and pirB genes. [J Adv Vet Anim Res 2020; 7(2.000): 320-323]
Показать больше [+] Меньше [-]Isolation of multidrug-resistant Escherichia coli, Staphylococcus spp., and Streptococcus spp. from dogs in Chattogram Metropolitan Area, Bangladesh Полный текст
2020
Probir Deb | Tridip Das | Chandan Nath | Abdul Ahad | Pankaj Chakraborty
Objectives: Antibacterial resistance is a great concern in human and food animal medicine, and it poses a significant concern in pet animals like dogs. This cross-sectional study was conducted to evaluate the antimicrobial resistance pattern of Escherichia coli, Staphylococcus spp., and Streptococcus spp. along with the carryover of some resistance genes in E. coli from dogs in the Chattogram metropolitan area, Bangladesh. Materials and Methods: Rectal swab (n = 50), nasal swab (n = 50), and skin swab (n = 50) sam¬ples were collected from dogs having respiratory infections, skin infections, and/or enteritis, respectively. Three types of bacteria were identified and isolated by conventional bacteriological techniques and biochemical tests. Antimicrobial susceptibility testing was carried out against 12 antimicrobials by disk diffusion methods. Six resistance genes, namely blaTEM, blaCTX-M, tetA, tetB, Sul-I, and Sul-II, were screened for phenotypically resistant E. coli isolates by the polymerase chain reaction. Results: A total of 39 (78%) E. coli, 25 (50%) Staphylococcus spp., and 24 (48%) Streptococcus spp. isolates were isolated from the rectal swab, nasal swab, and skin swab samples, respectively. In the cultural sensitivity test, the E. coli isolates showed resistance to ceftriaxone (79%) and sulfa¬methoxazole/trimethoprim (64%). Doxycycline (80%) demonstrated the highest resistance among Staphylococcus isolates, followed by sulfamethoxazole/trimethoprim (60%). Streptococcus iso¬lates showed the highest resistance to penicillin (63%), followed by ceftriaxone (54%), while no isolate showed resistance to gentamycin. The prevalence of blaTEM, blaCTX-M, tetA, tetB, Sul-I, and Sul-II genes in phenotypically resistant E. coli isolates were 100%, 61.29%, 100%, 8.33%, 56%, and 72%, respectively. Conclusions: Spillover of such multidrug-resistant bacteria and resistance genes from pet dogs pose a serious public health risk. [J Adv Vet Anim Res 2020; 7(4.000): 669-677]
Показать больше [+] Меньше [-]Reference values and repeatability of pulsed-wave Doppler flowmetry of portal vein in healthy dromedary she-camels Полный текст
2020
Ahmed A. Elsayed | Naglaa A. Gomaa
Objective: This study was conducted to establish the normal values and repeatability of pulsed-wave (PW) Doppler ultrasonographic parameters of the hepatic portal circulation in healthy dromedary she-camels. Materials and Methods: According to the American Society of Veterinary Clinical Pathology guide¬lines, the sample size and statistical analysis were followed. Ten healthy, non-pregnant, non-lactat¬ing she-camels were selected after physical, hematological, and ultrasonographic examinations. All hepatic ultrasonographic measurements were obtained from unsedated standing she-camels at the 11th right intercostal space using B-mode and PW Doppler. Results: The ultrasonographic measurements were portal vein (PV) diameter 1.76 ± 0.37 cm; por¬tal velocity 12.3 ± 3.2 cm/sec; portal area 2.05 ± 0.57 (cm)²; portal congestion index 0.16 ± 0.04 cms; and portal blood flow volume 0.02 ± 0.05 ml/sec/kg. The intra-assay coefficient of variations (CV)% of the above-mentioned variables were 5.84 ± 4.32, 12.3 ± 7.1, 10.5 ± 5.8, 14.7 ± 7.1, and 15.8 ± 12, respectively. However, the inter-assay CV% were 13.2 ± 5.9, 18.5 ± 8.4, 19.7 ± 7.6, 17.3 ± 8.8, and 31.9 ± 15, respectively. Conclusion: This study provides data that may be used as reference values for Doppler measure¬ments of the PV in she-camels, which may help diagnose some hepatic disorders in camels. [J Adv Vet Anim Res 2020; 7(4.000): 698-703]
Показать больше [+] Меньше [-]Differential efficacies of marigold leaves and turmeric paste on the healing of the incised wound in sheep Полный текст
2020
Md. Tuhinur Rahman | Moinul Hasan | Muhammad Tofazzal Hossain | Md. Sayedul Islam | Md. Ataur Rahman | Md. Rafiqul Alam | Nasrin Sultana Juyena
Objective: This study was undertaken to compare the curative efficacy of marigold leaf paste and turmeric paste on healing the incised wound in sheep. The study also determined the anti¬microbial effects and histopathological changes in a wounds healing process treated with these medicinal herbs. Materials and Methods: Surgical wounds (n = 18) were created aseptically in the skin of the flank region of six healthy sheep dividing them into three experimental groups. Follow-up data were taken up to day 21. Different morphological characteristics of the wound and wound contraction (length and width) were recorded weekly. Samples were collected on days 1, 2, and 3 to test the antimicrobial effects and on days 1, 3, and 7 for histopathological studies. Results: Treatment with marigold leaf paste and turmeric paste resulted in a swelled wound area of 11.78 ± 0.38 mm and 11.52 ± 0.27 mm, respectively. The wound areas were comparatively lower than that of the control group (11.44 ± 0.20 mm). Moreover, the least elevation (2.44 ± 0.12 mm) of the sutured line from the skin surface was noted and compared between the marigold leaf paste and normal saline (2.74 ± 0.13 mm). Bacterial colonies in the nutrient agar medium cultured with swabs from the normal saline-treated groups wound area were found on day 1. On the con¬trary, bacterial colonies were absent on days 2 and 3 of treatment in the groups treated with both the paste of marigold leaves and turmeric. Less intense tissue reactions and higher keratinization of epithelium were shown in the group treated with marigold leaf paste than turmeric paste and saline-treated groups. Conclusion: Marigold leaf paste showed less tissue reaction and healed the wounds effectively. Thus, this paste could be used for the treatment of superficial wounds in sheep. [J Adv Vet Anim Res 2020; 7(4.000): 750-757]
Показать больше [+] Меньше [-]Benefit of oxytocin released by cervix stimulation in Mexican Holstein cattle Полный текст
2020
Ricardo Morales | Marco Antonio Criollo | Mirvana Gonzalez | Gerardo Medina | Olga Maritza Manríquez | Victor Manuel Gonzalez | Carlos Villa-Angulo
Objective: The aim of this research is to investigate the relationship level of oxytocin released and the tactile stimulation of the cervix in Holstein cattle from the northwestern arid regions in Mexico. Materials and Methods: The cervixes of 10 Holstein Friesian dairy cows in mid-lactation were manually stimulated for 60 sec. Oxytocin released in the blood was analyzed before and after stimulation. The enzyme-linked immunosorbent assay was used in the analysis to make oxytocin detectable by spectrometry techniques and by converting the luminescence absorbance of each sample into pg per mol. Results: The study revealed that tactile stimulation of the cervix increased oxytocin levels. The highest increase in oxytocin level was 10,940.8222 pg/mol, while the lowest increase in oxytocin level was 1,830.94254 pg/mol. Besides, the milk production by tactile stimulation of the cervix had a higher milk yield and a p-value of 9.4 × 10−4 (p < 0.05) in comparison to the monthly average without tactile stimulation. Conclusion: Tactile stimulation of the cervix activates the Ferguson reflex and increases the oxyto¬cin released in the blood and increases the milk released from the alveolar glands. [J Adv Vet Anim Res 2020; 7(4.000): 608-613]
Показать больше [+] Меньше [-]Seroprevalence of some viral and bacterial zoonoses in domestic ruminants in Medina Полный текст
2020
Iman Ibrahim Shabana | Roaa A. Krimly
Objective: The study aimed to explore the seroprevalence of some bacterial (Brucella spp., Chlamydia abortus) and viral [Rift Valley fever virus (RVFV), foot and mouth disease virus (FMDV)] zoonoses in domestic ruminants in Medina. Materials and Methods: A total of 1,000 blood samples from 665 sheep, 228 goats, and 107 camels were collected from the central slaughterhouse, private farms, and veterinary clinics affiliated to the Ministry of Agriculture. The samples were screened using the Enzyme-Linked Immunosorbent Assay (ELISA). The results were statistically analyzed using Statistical Package for the Social Sciences version 20. Results: Brucella was found in 7.7%, 8.8%, and 6.5% of sheep, goats, and camels sera, respec¬tively. In humans, Brucella abortus and Brucella melitensis had higher frequencies in males (61.3%, 59.8%) than in females (38.7%, 40.2%). Chlamydia abortus was reported only in sheep at a rate of 0.75%. RVFV was prevalent in sheep (10.7%) and goats (17.9%). FMDV was reported in 27.8% of sheep and 7.9% of goats. There was a highly statistical significance between Brucella, RVFV, and FMDV seropositivity and locally bred animals (p < 0.01). Multiple seropositivities have been reported among sheep and goats. Brucella was commonly observed in mixed infection with other bacterial and viral agents under study. Conclusion: The surveyed viral and bacterial agents were prevalent in ruminants in the Medina region. Since Medina is an important destination for pilgrims from all over the world, therefore, an integrated approach involving strict control measures and routine vaccination programs should be adopted to reduce the possibility of global epidemics. [J Adv Vet Anim Res 2020; 7(1.000): 42-50]
Показать больше [+] Меньше [-]Quality assessment of different commercial and local milk available in the local markets of selected area of Bangladesh Полный текст
2020
Abhiram Karmaker | Pabitra Chandra Das | Abdullah Iqbal
Objective: This study aimed to assess the organoleptic, physico-chemical, and microbial quality as well as the presence of any adulterants in different commercial and local milk samples. Materials and Methods: Three brands of ultra-high temperature (UHT) milk, three brands of pasteurized milk, and three raw milk samples were procured and analyzed for different quality tests. Consumer preference about the milk samples were studied by evaluating the organoleptic properties by a testing panel of 15 panelists. Physico-chemical, adulteration, and microbial analysis of the milk samples were performed by following different standard methods. Results: Most of the organoleptic properties were varied significantly at p ≤ 0.05 for UHT and pasteurized milk samples, while raw milk samples were equally acceptable to the panelists in most cases. From physico-chemical analysis, it was found that raw milk contained the highest amount of moisture (90.68%), whereas UHT had the lowest (87.60%), and other components were ranged as 0.68%0.78% ash, 3.20%3.58% protein, 3.15%3.56% fat, 4.35%4.62% lactose, 0.14%0.22% acidity, 6.17%8.95% solid not fat, 9.32%12.40% total solid, and 1.026%1.034% specific gravity. All adulteration tests responded negatively for raw samples, whereas commercial milk samples showed positive response only on added sugar test. Total standard plate count and coliform count tests showed that there was no microorganism in a detectable range in commer¬cial milk samples, though raw samples had a significant amount. Conclusion: Though there were some fluctuations in some parameters of the three milk categories, but this study concluded that the quality of UHT and pasteurized milk were excellent with respect to parameters studied. [J Adv Vet Anim Res 2020; 7(1.000): 26-33]
Показать больше [+] Меньше [-]Diagnostic performance of ultrasonography in clinical management of dairy cattle identified with left-sided ping sounds Полный текст
2020
Shaimaa M. Gouda | Ahmed M. Abdelaal | Mohamed Gomaa | Magdy M. Elgioushy | Walid Refaai | Rebecca R. Mouncey | Shebl E. Salem
Objectives: Left displaced abomasum (LDA) is a common postparturient condition of high yielding dairy cattle. The diagnosis of LDA is challenging and has historically been based on findings that are not specific to the condition. The objective of the current study was to investigate the diag¬nostic performance of ultrasonography (USG) in the clinical management of dairy cows identified with left-sided ping sound postpartum. Materials and methods: Cows with reduced appetite postpartum and had audible left-sided ping sounds on abdominal auscultation were eligible to be prospectively recruited onto the study. The results of clinical findings and abdominal USG were recorded along with milk β-hydroxybutyrate levels, pH levels of abomaso/rumenocentesis samples, and findings on exploratory laparotomy. The diagnostic performance of USG and other clinical investigations was assessed by calculating the test sensitivity and specificity using exploratory laparotomy as a gold standard test. Results: A definitive diagnosis of LDA was made in 23 cows, 8 cows were diagnosed with peritoni¬tis, and 4 cows with frothy tympany. The USG findings that were consistent with LDA were present in all cattle diagnosed with LDA at exploratory laparotomy. The USG findings over the past three intercostal space characteristics of LDA, however, were also present in five cases subsequently diagnosed with peritonitis and in all cases diagnosed with frothy tympany on exploratory lapa¬rotomy. The pH of abdomaso/rumenocentesis samples yielded the highest diagnostic accuracy (97.14%) as a single test in the current study. Conclusions: USG over the left abdominal wall despite being a highly sensitive test for the diagno¬sis of LDA has limitations as a diagnostic tool due to suboptimal specificity. [J Adv Vet Anim Res 2020; 7(2.000): 308-313]
Показать больше [+] Меньше [-]Knowledge, attitude, and practice of a local community towards the prevention and control of rabies in Gaibandha, Bangladesh Полный текст
2020
M. Mujibur Rahaman | Umme Ruman Siddiqi | Abdullah Al Momen Sabuj | Be-Nazir Ahmed | Sanya Tahmina | Md. Rayhan Faruque | Sumon Ghosh | Nasir Uddin
Objectives: Knowledge, attitude, and practice (KAP) of rabies in the community are essential for developing post-exposure behavioral treatment and for understanding current prevention and control policy on rabies. This was a cross-sectional study in Gaibandha Sadar, a northern district of Bangladesh, investigating the level of KAP about rabies. Materials and methods: A total of 368 interviewed respondents, of whom 280 (76.09%) were male, and 88 (23.91%) were female. A structured questionnaire was used for the data collection from respondents on socio-demographic information and KAP regarding rabies. The data analyzed with STATA-IC-11.0 and the association of independent variables with rabies KAP scores were cal¬culated using Pearsons Chi-square. Results: Most respondents had adequate KAP levels and positive thoughts on rabies prevention. The KAP scores were strongly associated with education and employment status (p < 0.05). Most respondents said that stray dogs are a headache in the area and believed that control of the dog population in Gaibandha is essential. Conclusion: These outcomes also revealed that there is an information gap about rabies that might improve by developing an education program for awareness. [J Adv Vet Anim Res 2020; 7(3.000): 414-420]
Показать больше [+] Меньше [-]Microbial risk assessment of ready-to-eat mixed vegetable salads from different restaurants of Bangladesh Agricultural University campus Полный текст
2020
Md. Iftekhar Younus | Abdullah Al Momen Sabuj | Zobayda Farzana Haque | Sheikh Mohammad Sayem | Shankar Majumder | Mst. Sonia Parvin | Md. Alimul Islam | Sukumar Saha
Objective: The study was aimed to analyze the microbiological quality of mixed vegetable salads and to understand the risk related with its consumption from different restaurants around Bangladesh Agricultural University campus in Mymensingh. Materials and Methods: Sixty (60) samples of mixed vegetable salads were taken from twelve (12) different restaurants in five different time points from each restaurant. In parallel, restaurant workers were asked for handling practices while the consumers were interviewed about their salad consumption pattern and whether they had experienced any health-related problems. Microbial risk assessment of Staphylococcus spp., Salmonella spp., and Escherichia coli was esti¬mated by Monte Carlo simulation (10,000 iterations), an exponential model. Results: Aerobic plate count was ranged from 7.73 ± 0.61 to 9.04 ± 0.26 log cfu/gm, Staphylococcus spp. from 4.64 ± 0.61 to 6.42 ± 0.53 log cfu/gm, Salmonella spp. from 4.75 ± 0.08 to 5.27 ± 0.53 log cfu/gm, and E. coli from 4.98 ± 0.20 to 6.66 ± 0.80 log cfu/gm. From the survey, it was found that total consumers had 18% chances where the male had 13% and the female had 30% chances of being infected with salads. Again frequent, average, and occasional consumers had 31%, 13%, and 0% chances, respectively, of being infected with those salads. From the Monte Carlo simulation, the calculated mean annual risks of Staphylococcus spp., Salmonella spp., and E. coli infection for the three exposure scenarios were found to be about 100%. Conclusion: The study actually revealed the potential microbial contamination in mixed vegetable salads which may impact on food safety and human health. So, the findings suggest that following hygienic measures during processing and handling the microbiological quality of mixed vegetables salads can be improved. [J Adv Vet Anim Res 2020; 7(1.000): 34-41]
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