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Clinicopathological Evaluation On Capture Myopathy Due To Chemical Immobilization In Spotted Deer Texto completo
2019
Ashraf, Badol | Akter, Mst Antora | Saha, Mousumi | Mishra, Pravin | Hoda, Nazmul | Alam, Mahmudul
The study was focused to investigate the occurrence of a fatal capture myopathy (CM) after chemical immobilization during translocation in different places and to evaluate serum enzymes of stressed deer and pathologic alteration of vital organs of dead animals due to CM. Materials and Methods: The experimental data was collected from Bangladesh National Zoo, Dhaka and the experiment was conducted at the Department of Surgery and Obstetrics, Bangladesh Agricultural University, Mymensingh. Immediate after capture the animals were allowed to normalize body temperature by pouring sufficient water over the body. Peripheral blood was aspirated from jugular vein for serum biochemical analysis. Once the animals died, vital organs were collected and processed for histology.Data from 2013 to 2018 revealed 178 animals captured through darting and among them 40 animals died due to post-capture myopathy reflecting death rate of 22.47%. We have closely studied on 16 animals captured on different occasions. Serum enzyme analysis were exhibited increased levels of ALT, AST, Bilirubin, Creatinine, BUN, LDH, CK, Troponin, Cholesterol, Triglyceride, HDL and LDL and were highly indicative of stress-linked muscle and organ damage. The macroscopic lesions consisted of muscular and cardiac degeneration, edema, hemorrhage and congestion in lung, adrenal gland and in kidney. Microscopically there were loss of striation and fragmentation of skeletal muscle, formation of contraction band necrosis in myocardial fiber, degenerative changes in renal tubule and formation of central intraluminal eosinophilic casts.The pathological findings were indicative of capture myopathy in spotted deer. This report underlines that mortality from capture is a risk that must be considered during restocking programs.
Mostrar más [+] Menos [-]Treatment of Proximal Tibial Fracture of a Calf by Using Linear External Fixator Texto completo
2019
Gulayd, Ali
In this case report, treatment of the proximal tibial fracture of a calf with a linear external fixator (orthofix) system was presented. Oblique fracture was diagnosed proximal to left tibia regarding the clinical and radiological findings. Following the routine preparatory steps for the operation, the extremity was suspended and the fracture was reduced with orthofix from the lateral side of the tibia under general anesthesia. After the operation, it was observed that the calf could functionally use the related extremity from the first day. The consolidation was completed on the 41st day, and the fixator was removed on 47th day. In conclusion, it was considered that the proximal tibial fractures of calves could be successfully treated with a linear external fixator.
Mostrar más [+] Menos [-]Brucellosis knowledge, attitudes and practices of a South African communal cattle keeper group Texto completo
2019
Cloete, Alicia(University of Pretoria National Institute for Communicable Diseases ,University of Pretoria The School for Health Systems and Public Health) | Gerstenberg, Cornelia | Mayet, Natalie(National Institute for Communicable Diseases South Africa Regional Global Disease Detection Centre) | Tempia, Stefano(National Institute for Communicable Diseases Center for Respiratory Diseases and Meningitis ,Centers for Disease Control and Prevention Influenza Division ,Centers for Disease Control and Prevention)
Brucellosis remains an animal and public health concern in South Africa, given the intensity and widespread distribution of outbreaks in cattle. We conducted a cross-sectional survey among cattle keepers in the Whittlesea community of the Eastern Cape Province of South Africa, which utilises communal grazing. Individual cattle keepers (N = 227) who attended prearranged meetings in selected villages were interviewed using a structured questionnaire to assess their knowledge, attitude and practices (KAP) regarding bovine brucellosis. We compared KAP scores between previous brucellosis-affected villages and unaffected villages. We compared attitude and practices scores between those who had heard of brucellosis and those who had not and between those above the 75th percentile knowledge score and those below. The KAP for the study population were described using frequency tables. Scores of different groups were compared using the Welch t-test or the Wilcoxon rank-sum test. Knowledge scores of those who had heard of brucellosis (60%) showed a bimodal distribution with a 0/18 primary peak and 5-6/18 secondary peak. Attitude scores showed a median of 7/14 (interquartile range [IQR] 6-9), with 98% requesting more information on brucellosis. Practices scores showed a median of 6/18 (IQR 3-8), with high-risk practices identified that could facilitate brucellosis transmission. There were significant differences in attitude and practices scores between the groups above and below the 75th percentile knowledge score. The community showed poor knowledge, poor to average practices and average to good attitude. Identified high-risk practices highlight the risk of potential introduction and transmission of brucellosis between cattle and zoonotic transmission to humans.
Mostrar más [+] Menos [-]Molecular diagnosis of acute and chronic infection of Trypanosoma evansi in experimental male and female mice Texto completo
2019
Behour, Tahani S.(Animal Reproduction Research Institute Biotechnology Research Unit) | Aboelhadid, Shawky M.(Beni Suef University Faculty of Veterinary Medicine Department of Parasitology) | Mousa, Wahid M.(Beni Suef University Faculty of Veterinary Medicine Department of Parasitology) | Amin, Adel S.(Animal Reproduction Research Institute Biotechnology Research Unit) | El-Ashram, Saeed A.(Foshan University College of Life Science and Engineering ,Kafrelsheikh University Faculty of Science)
Trypanosoma evansi is enzootic in camels in Egypt, and water buffaloes act as a reservoir for camel infection. Molecular techniques have contributed towards understanding the epidemiology of T. evansi. Trypanosoma evansi was detected in acute and chronic stages of the disease in male and female mice by polymerase chain reaction (PCR) using two primers. Two experiments were conducted. In experiment I, two groups consisting of 26 female and 26 male mice received 10(4) trypanosome by I/P inoculation for each mouse. In experiment II, 42 female and 42 male mice were inoculated I/P with 10² trypanosome/mouse. In addition, five mice were kept as uninfected control for each group. Mice were monitored daily for parasitaemia level during the pre-patent period using the micro-haematocrit centrifugation technique (MHCT) and conventional PCR. The primer pairs, (Trypanosoma brucei) TBR1/2 and TeRoTat1.2 (T. evansi Rode Trypanozoon antigen type [RoTat] 1.2), detected the infection after 24 hours earlier than MHCT in both experiments. The course of infection that was detected by MHCT revealed three waves of parasitaemia in female mice and two waves in male mice in the chronic stage of infection. In addition, PCR was able to detect T. evansi in different organs in the chronic stage (i.e. disappearance of parasite from blood). Application of the two primer sets on blood samples from camels showed that all samples were positive by TBR1/2 primers and only 32 of 44 were positive by TeRoTat1.2 primers. Acutely and chronically Trypanosoma-infected mice were detected by PCR in blood and organs. TBR1/2 primers were more sensitive than TeRoTat1.2 primers in detecting Trypanosoma-infected mice, and more reliable in detecting field-infected camels and excluding carrier animals.
Mostrar más [+] Menos [-]Injectable organic and inorganic selenium in dairy cows - Effects on milk, blood and somatic cell count levels Texto completo
2019
Ferreira, Gert M.(Morvet Veterinary Practise) | Petzer, Inge-Marie(University of Pretoria Faculty of Veterinary Science Department of Production Animal Studies)
Mastitis is the most costly disease of dairy cows. A pro-active approach includes insuring adequate levels of selective trace minerals. The aim of this study was to determine the effect of two different commercially available, injectable selenium products, (sodium) Na-selenite (inorganic) and (selenium) Se-methionine (organic), on milk composition and on serum and milk selenium concentrations in high-yielding Holstein cows on total mix ration. Sixty multiparous cows were randomly selected into three groups of 20, one control group and two groups supplemented with injectable trace minerals. Blood and milk samples were collected over a period of 60 days. No specific change was indicated in milk yield, lactose, milk urea nitrogen (MUN) and milk pH levels compared with baseline values. The Se-methionine supplemented group showed a numerical increase in total milk protein percentage. In the group injected with Se-methionine, a negative correlation was present for the initial 72 hours between serum selenium concentration and somatic cell count (SCC) and a highly significant (p < 0.001) increase in milk selenium concentration for the initial 24 hours. Serum selenium concentration of Se-methionine-supplemented cows was however not significantly changed. Injection of Na-selenite led to a 60-day initial increase in serum selenium concentration above baseline levels and a significant milk selenium concentration on day 1 but to a negative correlation between serum selenium concentration and SCC. Differences in serum and milk selenium concentrations followed with the use of organic and inorganic selenium injectables. Injectable Na-selenite, as selenium, can be of important value for cattle farmers if supplemented on strategically physiological periods to improve production, reproduction and immunity.
Mostrar más [+] Menos [-]Rift Valley fever virus in small ruminants in the Democratic Republic of the Congo Texto completo
2019
Tshilenge, Georges M.(University of Kinshasa Faculty of Veterinary Medicine Department of Preclinical Medicine) | Mulumba, Mfumu L.K(University of Kinshasa Faculty of Veterinary Medicine Department of Clinical Medicine) | Misinzo, Gerald(Sokoine University of Agriculture Department of Microbiology and Parasitology) | Noad, Rob(Royal Veterinary College London School of Hygiene and Tropical Medicine Department of Pathobiology and Population Sciences) | Dundon, William G.(Joint Food and Agriculture Orginazation/ International Atomic Energy Agency Animal Production and Health Laboratory ,International Atomic Energy Agency Department of Nuclear Sciences and Applications)
Rift Valley fever (RVF) is a zoonotic viral disease caused by the RVF phlebovirus (RVFV) that infects a variety of animal species including sheep and goats. Sera (n = 893) collected between 2013 and 2015 from randomly selected indigenous sheep and goats in seven provinces of the Democratic Republic of the Congo (DRC) were tested for the presence of specific immunoglobulin G (IgG) and M (IgM) against RVFV, using two commercially available enzyme-linked immunosorbent assays. The reverse transcription polymerase chain reaction (RT-PCR) was also used to detect RVFV nucleic acid. There was significant variation in true seroprevalence of RVFV for both sheep and goats between the seven provinces investigated. Values ranged from 0.0 (95% confidence interval [CI] 0.0-6.55) to 23.81 (95% CI 12.03-41.76) for goat and 0.0 (95% CI 0.0-7.56) to 37.11 (95% CI 15.48-65.94) for sheep, respectively. One serum (1.85%) out of 54 that tested positive for IgG was found to be IgM-positive. This same sample was also positive by RT-PCR indicating an active or recent infection. These findings report the presence of RVFV in small ruminants in the DRC for the first time and indicate variations in exposure to the virus in different parts of the country.
Mostrar más [+] Menos [-]Antimicrobial usage in pig production: Effects on Escherichia coli virulence profiles and antimicrobial resistance Texto completo
2019
Abubakar, Rukayya H.(University of Pretoria Faculty of Veterinary Sciences Department of Veterinary Tropical Diseases) | Madoroba, Evelyn(University of Zululand Department of Biochemistry and Microbiology) | Adebowale, Oluwawemimo(Federal University of Agriculture College of Veterinary Medicine Department of Veterinary Microbiology and Parasitology) | Fasanmi, Olubunmi G.(University of Pretoria Faculty of Veterinary Sciences Department of Production Animal Studies,Federal College of Animal Health and Production Technology Department of Animal Health) | Fasina, Folorunso O.(University of Pretoria Faculty of Veterinary Sciences Department of Veterinary Tropical Diseases,Food and Agriculture Organisation of the United Nations Emergency Centre for Transboundary Animal Diseases)
Antimicrobials (AM) are used for growth promotion and therapy in pig production. Its misuse has led to the development of resistant organisms. We evaluated Escherichia coli virulence genes, and compared phenotypic-genotypic antimicrobial resistance (AMR) patterns of faecal E. coli from pigs receiving routine farm treatment without antimicrobial agents against pigs treated routinely with AM over 70 days. Recovered E. coli were tested for AMR using disk diffusion and polymerase chain reaction. Virulence genes were detected in 24.8% of isolates from antimicrobial group and 43.5% from non-antimicrobial group (p = 0.002). The proportion of virulence genes heat-stable enterotoxins a & b (STa, STb), enteroaggregative heat stable enterotoxin 1 [EAST1] and Shiga toxin type 2e [Stx2e]) were 18.1%, 0.0%, 78.7% and 3.0% for antimicrobial group and 14.8%, 8.5%, 85.1% and 12.7% for non-antimicrobial groups, respectively. Resistance to oxytetracycline was most common (p = 0.03) in samples collected between days 10 and 21. Resistance shifted to amoxicillin on days 56-70, and trimethoprim resistance was observed throughout. Seventeen phenotypic AMR combinations were observed and eight were multidrug resistant. At least one tetracycline resistance gene was found in 63.9% of the isolates. tet (A) (23.3%) was most common in the antimicrobial group, whereas tet (B) (43.5%) was prevalent in the non-antimicrobial group. Usage or non-usage of antimicrobial agents in growing pigs does not preclude virulence genes development and other complex factors may be involved as previously described. Heavily used AM correspond to the degree of resistance and tetracycline resistance genes were detected during the growth phase.
Mostrar más [+] Menos [-]Seroprevalence and associated risk factors of Toxoplasma gondii infection in domestic animals in southeastern South Africa Texto completo
2019
Tagwireyi, Whatmore M.(University of Pretoria Faculty of Veterinary Science Department of Production Animal Studies) | Etter, Eric(University of Pretoria Faculty of Veterinary Science Department of Production Animal Studies,CIRAD, UMR Animal, Santé, Territoires, Risque et Ecosystèmes ,Univ Montpellier ASTRE) | Neves, Luis(University of Pretoria Faculty of Veterinary Science Department of Veterinary Tropical Diseases,Universidade Eduardo Mondlane Centro de Biotecnologia)
Toxoplasma gondii is a major neglected parasitic infection occurring in settings of extreme poverty in Africa. Apart from causing reproductive failure in animals it is also a significant zoonotic concern. The objective of this study was to determine the seroprevalence and associated risk factors of T. gondii infection in cats, chickens, goats, sheep and pigs in the southeast of South Africa, of which little is known. Sera was obtained from 601 domestic animals including 109 cats, 137 chickens, 128 goats, 121 sheep and 106 pigs managed under different production systems in different agro-ecological regions and evaluated by the Toxoreagent, a latex agglutination test for T. gondii antibody detection. Household-level and animal-level data were collected by interviewing animal owners and/or herders using a closed-ended questionnaire. The study revealed an overall farm seroprevalence of 83.33% (125/150 farms) with the highest rate of infection for the parasite found in sheep with 64.46% (78/121), followed by goats with 53.91% (69/128), pigs with 33.96% (36/106), cats with 32.11% (35/109 cats) and chickens with 33.58% (46/137). The risk factors that were found to be statistically significant (p < 0.05) to different species of seropositivites were age, location, climate, animal production system, rodent control, seropositive cat, cat-feed access and cat faecal disposal. The relatively high seroprevalence of T. gondii detected in this region suggests that domestic animals may pose a substantial public health risk through the consumption of T. gondii-infected raw meat as well as via contact with cat faeces.
Mostrar más [+] Menos [-]Detection of native interferon-&gamma; in nyala (Tragelaphus angasii): Towards diagnosing tuberculosis Texto completo
2019
Roux, Lezaan(University of Pretoria Faculty of Veterinary Science Department of Veterinary Tropical Diseases, Bovine Tuberculosis and Brucellosis Research Programme) | McCall, Alicia J.(Veterinary Services Department of Agriculture and Rural Development) | Michel, Anita L.(University of Pretoria Faculty of Veterinary Science Department of Veterinary Tropical Diseases, Bovine Tuberculosis and Brucellosis Research Programme)
Mycobacterium bovis is the main cause of tuberculosis in wildlife. In South Africa, African buffaloes (Syncerus caffer) are a wildlife maintenance host while a number of other species are considered spillover hosts. Nyala (Tragelaphus angasii), a large antelope species from Southern Africa, is frequently traded and can be infected with M. bovis. Interferon gamma (IFN-γ) release assays that detect cell-mediated immune (CMI) responses to M. bovis infection have shown promise in elephants, rhinoceroses and buffaloes. The BOVIGAM® assay is a commercial IFN-γ release assay designed to detect tuberculosis in cattle and has been validated in buffaloes. We tested the suitability of the BOVIGAM® assay to detect native IFN-γ release in nyala. Blood samples collected from 17 nyalas were stimulated with different mitogens and IFN-γ release measured. We found that incubating whole blood with phorbol 12-myristate 13-acetate and calcium ionophore (PMA/CaI) resulted in the highest levels of IFN-y release. Samples stimulated with tuberculin purified protein derivatives of M. bovis (PPDb) and M. avium (PPDa) did not show significant IFN-γ production. An intradermal tuberculin test (IDT) and culture of tissues from 15 of the 17 culled nyala were also performed, which supported the findings of the BOVIGAM® assay, suggesting the potential value of this assay for the diagnosis of tuberculosis in nyala.
Mostrar más [+] Menos [-]Comparison of intramuscular administration of alfaxalone-ketamine-dexmedetomidine and alfaxalone-butorphanol-midazolam in naked mole-rats (Heterocephalus glaber) Texto completo
2019
Eshar, David | Huckins, Gail L. | Shrader, Trenton C. | Beaufrere, Hugues
OBJECTIVE To compare anesthetic effects of alfaxalone-ketamine-dexmedetomidine (AKD) and alfaxalone-butorphanol-midazolam (ABM) in naked mole-rats (Heterocephalus glaber). ANIMALS 20 naked mole-rats. PROCEDURES Naked mole-rats received AKD (alfaxalone, 2 mg/kg; ketamine, 20 mg/kg; and dexmedetomidine, 0.02 mg/kg; n = 10) or ABM (alfaxalone, 2 mg/kg; butorphanol, 2 mg/kg; and midazolam, 1 mg/kg; 9) IM; 1 animal was removed from the study. Atipamezole (I mg/kg) and flumazenil (0.1 mg/kg) were administered 40 minutes after anesthetic induction (defined as loss of the righting reflex) with AKD and ABM, respectively. Heart rate, respiratory rate, oxygen saturation, and reflexes were recorded every 5 minutes. RESULTS The ABM group had significantly longer median times for induction and recovery than the AKD group. Administration of ABM resulted in significantly lower respiratory rates than administration of AKD from time of anesthetic induction to 10 minutes after induction. Respiratory rate significantly decreased in the AKD group from I0 minutes after induction through the end of the anesthetic period but did not change over time in the ABM group. Males had higher respiratory rates in both groups. Loss of the righting reflex was still evident 40 minutes after induction in both groups. In the AKD group, all tested reflexes were absent from I0 to 40 minutes after induction; the ABM group had variable reflexes that recovered within individual animals over time. CONCLUSIONS AND CLINICAL RELEVANCE Both AKD and ABM provided effective immobilization in naked mole-rats, but AKD appeared to provide more consistent and deeper anesthesia, compared with administration of ABM.
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