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Determination of median embryo lethal dose for a velogenic Newcastle disease virus isolated in Sulaimani/Iraq Texte intégral
2023
Hiewa Dyary | Rozita Husseiun | Nahla Saeed | Peshnyar Rashid
Newcastle disease (ND) is an endemic viral illness in Iraq and has four types: viscerotropic velogenic, neurotropic velogenic, mesogenic, and lentogenic. The virulence of the virus continuously increases, and it is widely spread in wild and domestic birds. Backyard and poultry farm chickens are mainly affected, causing significant economic losses, as the disease is famous for high morbidity and mortality, which may reach 100%. An outbreak of velogenic ND spread in poultry farms in Sulaymaniyah/Iraq in early 2023, causing high mortality rates. Hence, this study was conducted to isolate and identify the virus and determine its median embryo lethal dose (ELD50) in embryonated chicken eggs (ECEs). Samples were taken from chickens suspected of ND, and NDV identification was made by molecular techniques by amplifying part of the 535-base pair-F gene. The virus was passaged three times in ECEs, and the collected allantoic fluid was used to determine the ELD50. After that, fifty ECEs were used to calculate the ELD50. Allantoic fluid dilutions of 10–107 resulted in the death of all embryos after 2-3 days, with distinctive signs of bleeding and hemorrhage. Dilutions of 108, 109, and 1010 resulted in the death of four, two, and one embryo, respectively, and the PCR test revealed NDV infection. The ELD50 was 6.3 ×108 times the allantoic fluid dilution, showing that the virus was very velogenic and necessitated a strict control plan to prevent the disease's further spread.
Afficher plus [+] Moins [-]Evaluation of dietary spray-dried bovine plasma fed to turkeys during brooding on performance to market age Texte intégral
2023
Ashley Gernat | Joy Campbell | Adam Fahrenholz | Jesse Grimes
Commercial turkey production can experience an economic loss due to exposure of birds to stress. Turkeys can undergo various levels of stress, including, but not limited to, hatching, brooding/growing, and transport. Temperature, climate, heat, and cold stress are major livestock stressors associated with economic losses. Exposure to stress also causes an increased probability of infections and diseases that have a negative financial impact on production. In this study, Large White commercial turkey hens were reared for 12 weeks (wk) to evaluate their stress responses and performance alterations due to induced stress through a mimic of brooder house to grow-out transition. Parameters for performance, blood, and meat yield were recorded. Spray-dried bovine plasma (SDBP) was formulated iso-nutritionally into the diets. SDBP has been shown to be an ingredient in animal diets that may help support immune health and positively affect performance. This ingredient was used for a total of 6 wk in the starter and grower-1 diets at different inclusion percentages. Treatments included a control diet (0% SDBP), 1.0% (SDBP1), and 2.0% (SDBP2) inclusion. At 6 wk, common diets were fed (grower-2 and finisher-1). At 5 wk management-based stressors were applied for 24 hours (h): feed and water restriction and reduced house temperature. Previously used pine shavings were used for bedding. No significant variances were noted in body weight, weight gain, or feed consumption as a result of the different feed treatments. However, during the sixth week, the feed conversion ratio (FCR) was improved due to SDBP inclusion. The FCR for SDBP1 (1.90) and SDBP2 (1.97) birds was lower than that of the control diet-fed birds (2.04). No difference in FCR was observed at 12 wk. A significant difference was observed for corticosterone levels post-stress: SDBP1 (23.81 ng/mL) and SDBP2 (19.17 ng/mL) were higher than that of the control birds (16.40 ng/mL). Further research is needed to ascertain the impact of SDBP on the immune function and production of turkeys.
Afficher plus [+] Moins [-]Enteric Protozoal infections in Camels: Etiology, Epidemiology, and Future perspectives Texte intégral
2023
Eman Noaman | Mona Mahmoud | Akram Salama | Adel El-Kattan | Ali Dawood | Ahmed Elsify | Walid Mousa | Ahmed Elkhtam | Ahmed Zaghawa | Mohamed Nayel
Camels have great potential as a safety valve for current and future food security for pastoralists, agropastoralists, and urban populations. Enteric protozoal diseases are important causes of economic losses in camels; however, they are poorly concerned globally. The most common members of enteric protozoa are Balantidium, Eimeria, Giardia, and Cryptosporidium. Some of them threaten human health as humans can be infected by consuming food or water contaminated with camel feces, particularly in poor communities with inadequate sanitation and low-quality healthcare facilities. For these reasons, a comprehensive and careful investigation was conducted on some enteric protozoal diseases of camels to present an updated insight into the etiology, epidemiology, and future trends in diagnosing and controlling camel enteric protozoa. Future studies on the camel enteric protozoa should be carried out to develop advanced diagnostic approaches in diverse farm animal species. Moreover, the protozoan zoonotic potential should be considered to secure human health
Afficher plus [+] Moins [-]The universality of eAREs in animal feces suggesting that eAREs function possibly in horizontal gene transfer Texte intégral
2023
Yusha Jiang | Lang Zhao | Jia Danyang Li | Jialiang Sun | Rui Miao | Bo Shao | Peifu Wu
Objectives: This study aimed to pinpoint the universality of extracellular antimicrobial resistance elements (eAREs) and compare the contents of eAREs with those of intracellular AREs (iAREs) in animal feces, thus laying a foundation for the further analysis of the horizontal transfer of antimicrobial resistance genes (ARGs) in the animal guts. Materials and Methods: Extracellular DNAs were isolated from the fecal samples of Pavo cristatus (n = 18), Ursus thibetanus (n = 2), two breeds of broilers (n = 21 and 11, respectively), and from the contents of rabbit intestines (n = 5). eAREs were detected by PCR technology. iAREs in P. cristatus and broiler feces were also detected and compared with the corresponding eAREs. In addition, some gene cassettes of class 1 integrons were sequenced and analyzed. Results: The results showed that eAREs exist in animal feces and intestinal contents. In this study, different eAREs were detected from animal feces and intestinal contents, and tetA, tetB, sul1, sul2, class 1 integron, and IncFIB presented the highest detection rates. The detection rates of certain eAREs were significantly higher than those of parallel iAREs. The integral cassettes with intact structures were found in eAREs, and the cassettes carried ARGs. Conclusions: The presented study here sheds light on the presence of eAREs in animal feces or guts, and eAREs may play an important role in the horizontal gene transfer of ARGs. [J Adv Vet Anim Res 2023; 10(1.000): 103-112]
Afficher plus [+] Moins [-]Effects of dried chaya leaf meal inclusion in the diet on growth performance and blood profiles in Thai native chicken (Pradu Hangdum) Texte intégral
2023
Morrakod Wongnhor | Worasin Malaithong | Duddoa Khonyoung
Objective: The objective of the present study was to evaluate the effects of using dried chaya leaf meal (DCLM) as a protein feed in a diet on growth performance, blood profiles, and carcass quality in a native Thai chicken. Materials and Methods: Eighty 14-day-old Pradu Hangdum chicks were divided into four groups with four replicates each: control (without DCLM), 10%, 20%, and 30% DCLM inclusion in mash feed. Growth performance was recorded weekly until 98 days of age. Blood profile, carcass quality, and visceral organ weight were measured at 98 days of age. Results: The 10%–30% DCLM inclusion in the diet did not affect feed intake or feed efficiency; however, the body weight gain of chicks decreased linearly with the increase in DCLM inclusion. The heterophils, eosinophils, and monocytes were linearly increased with the increasing DCLM levels in the groups. The serum blood chemistry did not differ among the groups, while the AST in 10% and 20% DCLM was lower than in the control. Increasing the level of DCLM in the chicken diet did not affect carcass quality. Conclusion: The DCLM can be used as a feed ingredient in Thai native chicken feed up to 20%. [J Adv Vet Anim Res 2023; 10(1.000): 51-56]
Afficher plus [+] Moins [-]New probiotics (Lactobacillus plantarum and Saccharomyces cerevisiae) supplemented to fermented rice straw-based rations on digestibility and rumen characteristics in vitro Texte intégral
2023
Yetti Marlida | Harnentis Harnentis | Yuliaty Shafan Nur | Laily Rinda Ardani
Objective: This research was arranged to explore the effect of supplementation of a combination of Lactobacillus plantarum and Saccharomyces cerevisiae as a new probiotic in fermented rice straw-based rations on in vitro digestibility and ruminal characteristics. Materials and Methods: A randomized group design with 3 types of treatment and 4 replications as a group was used in this study. A probiotic inoculum containing L. plantarum and S. cerevisiae with 1 × 1010 colony-forming unit (CFU)/ml. Treatments were followed by: P1 = complete rations without probiotics (control), P2 = P1 supplemented 0.5% probiotics, and P3 = P1 supplemented 1% probiotics. Substrate complete rations were based on the fermented rice straw and concen¬trate (60%:40%). Parameters of digestibility and rumen fermentation products were determined after 48 h of incubation. Results: Probiotics supplemented with fermented rice straw-based rations significantly increased (p < 0.05) digestibility and rumen characteristics in vitro. Supplementation with 1% probiotics (P3) produces the highest digestibility compared to other treatments: in-vitro dry matter digestibil¬ity (IVDMD) (55%), in-vitro organic matter digestibility (IVOMD) (58.28%), in-vitro crude protein digestibility (IVCPD) (84.42%), in-vitro acid detergent fiber digestibility (IVADFD) (53.99%), in-vitro neutral detergent fiber digestibility (IVNDFD) (58.39%), and in-vitro cellulose digestibility (IVCLD) (67.12%). Rumen pH (6.76–6.80) did not change significantly (p > 0.05) due to supplemented probiotics. Probiotic supplementation in rations significantly (p < 0.05) increased the content of NH3 and total volatile fatty acid (VFA). Supplementation with 1% probiotic (P3) showed the highest concentration of NH3 (26.56 mg/100 ml) and was also followed by the total VFA (115.75 mM) compared to the control (22.59 mg/100 ml and 103.00 mM, respectively). Conclusion: Supplementation of 1% probiotics (combination of L. plantarum and S. cerevisiae) containing 1 × 1010 CFU/ml in fermented rice straw-based rations increases nutrient digestibility, that is, IVDMD, IVOMD, IVCPD, IVADFD, IVNDFD, and IVCLD, and also increases rumen fermenta¬tion, which is the concentration of NH3 and total VFA. [J Adv Vet Anim Res 2023; 10(1.000): 96-102]
Afficher plus [+] Moins [-]Validation of portable electronic equipment (Accutrend® Plus) to determine glucose, total cholesterol, and triglycerides in rats (Rattus) and dogs (Canis lupus familiaris) Texte intégral
2023
Paola de la Paz Ramírez | Gerardo Ordaz | Reynaldo de la Paz Gonzales | Rosa Elena Perez | Manuel López | Ruy Ortiz
Objective: This study aimed to validate the analytical precision of the Accutrend® Plus portable electronic equipment (PE) to determine glucose (GLU), total cholesterol (TC), and triglycerides (TG) in rats and dogs using the conventional laboratory method (CM) as a reference. Materials and Methods: To determine the analytical accuracy of the Accutrend® Plus in the mea¬surement of GLU, CT, and TG. The EP-9-A2 guide (Clinical and Laboratory Standards Institute), Bland-Altman graphical analysis, and Lin's correlation coefficient of concordance (CCC) were implemented. Results: The average differences (p > 0.05) between PE and CM for GLU, TC, and TG were 2.21, 1.20, and 0.72 mg·dl−1, respectively, in rats and 1.06, 4.30, and 2.41 mg·dl−1, respectively, in dogs (p > 0.05). Both methods showed a linear relationship with Pearson's correlation coefficients > 0.96 and R2 > 0.97 for the three biochemical indicators evaluated in both species. The GLU, TC, and TG values obtained by the PE were substantial, as evident from Lin's CCC > 0.96. Conclusion: The PE Accutrend® Plus is potent for monitoring GLU, TC, and TG in rats and dogs because of its precision and ability to facilitate measurement by reducing stress in animals during sampling. [J Adv Vet Anim Res 2023; 10(1.000): 57-63]
Afficher plus [+] Moins [-]First report of Aliarcobacter cryaerophilus in ready-to-cook chicken meat samples from super shops in Bangladesh Texte intégral
2023
Md. Muket Mahmud | Ajran Kabir | Md. Zawad Hossain | Sanjida Jamal Mim | Israt Jahan Yeva | Minara Khatun | Mohammad Saidur Rahman | Madan Mohan Dey | K. H. M. Nazmul Hussain Nazir
Objective: This study aimed to isolate Aliarcobacter cryaerophilus in ready-to-cook poultry meat in Bangladesh. Materials and Methods: Thirty drumstick samples were collected from super shops in Dhaka city (n = 10), Mymensingh city (n = 10), and Patuakhali town (n = 10). After sample processing, they were cultured in Blood agar media with Campylobacter base using a microfilter (0.42 nm). Suspected colonies were subjected to DNA extraction and PCR assay targeting 16SrRNA genes. Then, sequencing was performed for confirmation. Results: Of 30 samples, 3 (10%) were positive for A. cryaerophilus. Phylogenetic analysis shows that our isolate has strong similarities with one of the isolates from China. Conclusion: The presence of this organism in ready-to-cook poultry meat is a significant concern for consumers as it bears zoonotic importance. [J Adv Vet Anim Res 2023; 10(1.000): 113-117]
Afficher plus [+] Moins [-]Clinicopathological study on camel mastitis at Matrouh Governorate Texte intégral
2023
Asmaa Abdallah Darwish
Objective: Camel mastitis is indeed a serious problem that can have significant impacts on animal health and production as well as pose a potential public health hazard. This work aimed to identify the bacterial species responsible for camel mastitis and evaluate the associated immunological and clinicopathological alterations in infected camels. Materials and Methods: Raw milk and blood samples were collected from 40 apparently healthy she-camels, and 40 she-camels suffered from clinical mastitis (CMG). Milk samples were sub¬jected to bacteriological examination. Serum immunological, biochemical, and hematological parameters were estimated and statistically analyzed. Results: Similar bacterial species were obtained from the two groups with different isolation rates. Staphylococcus epidermidis and Escherichia coli were the dominant species in the apparently healthy group, while Pseudomonas aeruginosa and Bacillus cereus were the dominant species in CMG. A significant (p < 0.05) elevation of the pro-inflammatory cytokines, acute phase proteins (APPs), free radicals, total protein, Glob, kidney and liver function tests, and triglyceride concentrations were detected in CMG, and a significant (p < 0.05) decrease in the anti-inflammatory cytokine, antiox¬idants, Alb, glucose, and T/LDL/HDL-cholesterol concentrations was observed in CMG. Microcytic hypochromic anemia with hypoferremia, hypotransferrinemia, hyperferritinemia, and neutrophilic leukocytosis was depicted in CMG. The estimated pro-inflammatory cytokines, APPs, and total anti¬oxidant capacity (TAC) yielded high sensitivity and specificity, but the highest likelihood ratio was for TAC, fibrinogen (Fb), and ferritin, and the highest percentages of increase were for IL-1α and IL-1β. Conclusion: The study emphasizes the importance of hygienic preventive measures to control camel mastitis and the importance of supportive treatment to reverse the hemato-biochemical and iron profile changes that result from the immune response in mastitic she-camels. TAC, Fb, ferritin, IL-1α, and IL-1β are good biomarkers for camel mastitis. [J Adv Vet Anim Res 2023; 10(2.000): 284-291]
Afficher plus [+] Moins [-]Autophagy characteristics of phytoestrogens in management and prevention of diseases: A narrative review of in-vivo and in-vitro studies Texte intégral
2023
Safaa I. Khater | Maram Shalabi | Buthainah B. Alammash | Alaa I. Alrais | Doaa Al-ahmadi | Leena S. Alqahtani | Tarek Khamis | Sahar Abdelaziz | Khalifa Aldawy
Phytoestrogens are non-steroid polyphenolic materials present in 300 plants. Regarding their structural similarities to estradiol, phytoestrogens attach to estrogen receptors and display anti-or pro-estrogenic activities. This review explored phytoestrogens' potential advantages and autophagy properties in light of their future application for disease management, highlighting how phytoestrogens could modulate autophagy. Research has examined the prospective benefits of phytoestrogens for the anticipation and management of various conditions, including signs of menopause, tumors, skin deterioration, osteoporosis, heart disease, neurodegenerative conditions, disorders of the immune system, and metabolic syndrome, owing to their therapeutic effects. As phytoestrogens can activate or inhibit autophagy, which has antioxidant, apoptotic, anti-mutagenic, anticancer, transcriptional, and genomic impacts on cancer and aging illnesses, phytoestrogens could influence diseases through the modulation of autophagy. The collaborative research on animal models, utilization of genetic techniques, and administration of pharmacolog¬ically active substances has indicated the possible therapeutic benefits of autophagy modulation in various illnesses. Further research is required to illustrate the pathways by which phytoestro¬gens modulate autophagy and the possible therapeutic effects on these diseases. [J Adv Vet Anim Res 2023; 10(2.000): 308-320]
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