Refine search
Results 201-210 of 467
Pre-slaughter, slaughter and post-slaughter defects of skins and hides at the Sheba Tannery and Leather Industry, Tigray region, northern Ethiopia
2015
Kahsay, Tesfay(Mekelle University College of Veterinary Medicine) | Negash, Guesh(Mekelle University College of Veterinary Medicine) | Hagos, Yohannes(Mekelle University College of Veterinary Medicine) | Hadush, Birhanu(Mekelle University College of Veterinary Medicine)
Skins and hides are perishable resources that can be damaged by parasitic diseases and human error, which result in downgrading or rejection. This study was conducted to identify defect types and to determine their prevalence in pickled sheep and wet blue goat skins and wet blue hides. Each selected skin or hide was examined for defects in natural light and the defects were graded according to established quality criteria in Ethiopian standard manuals. Major defects were captured by digital photography. The major pre-slaughter defects included scratches (64.2%), cockle (ekek) (32.8%), wounds or scars (12.6%), lesions from pox or lumpy skin disease (6.1%), poor substance (5%), branding marks (2.3%) and tick bites (1.5%). The presence of grain scratches in wet blue hides (76.3%) was significantly higher than in pickled sheep (67.2%) and wet blue goat (59.1%) skins. The major slaughter defects included flay cuts or scores, holes, poor pattern and vein marks, with a higher occurrence in wet blue goat skins (28.7%; P < 0.001) than in wet blue hides (22.8%) and pickled sheep skins (11.1%). The most prevalent post-slaughter defects were grain cracks (14.9%), hide beetle damage (8%), damage caused by heat or putrefaction (3.7%) and machine-induced defects (0.5%). Grain cracks (27.04%) and hide beetle damage (13.9%) in wet blue goat skins were significantly more common than in wet blue hides and pickled sheep skins. These defects cause depreciation in the value of the hides and skins. Statistically significant (P < 0.001) higher rejection rates were recorded for wet blue hides (82.9%) than for pickled sheep skins (18.3%) and wet blue goat skins (8.5%). Improved animal health service delivery, effective disease control strategies and strong collaboration between stakeholders are suggested to enhance the quality of skins and hides.
Show more [+] Less [-]A postmortem study on indigestible foreign bodies in the rumen and reticulum of ruminants, eastern Ethiopia
2015
Negash, Seifu(Hawassa University School of Veterinary Medicine) | Sibhat, Berhanu(Hawassa University School of Veterinary Medicine) | Sheferaw, Desie(Hawassa University School of Veterinary Medicine)
A cross-sectional study was conducted on ruminants (cattle, sheep and goats) slaughtered at Haramaya University and Haramaya municipal abattoirs from November 2013 to April 2014 in Haramaya, eastern Ethiopia. The objective of the study was to identify types and estimate the prevalence of foreign bodies in the rumen and reticulum of domestic ruminants in the area. From 810 randomly selected study animals, 422 (52.1%) were found to have foreign bodies. Of the 332 cattle, 193 sheep and 285 goats examined, 144 (43.4%), 109 (56.5%) and 169 (59.3%) respectively were found with various types of foreign bodies. The prevalence of foreign bodies was significantly (χ2 = 17.53, p < 0.05) higher in sheep (59.3%) and goats (56.7%) than in cattle (43.4%). Overall the prevalence of foreign bodies in study animals with poor body condition was significantly higher (χ2 = 38.57,p < 0.05) than in those with medium and good body condition. A higher percentage of foreign bodies occurred in the rumen alone (87.9%) than in the reticulum alone (5.0%), with the rest present in both. Significantly higher proportions of foreign bodies were observed in the rumen of cattle (χ2 = 332, p < 0.05), sheep (χ2 = 193, p < 0.05) and goats (χ2 = 285.0, p = 0.000) than in the reticulum. Plastic was the most commonly encountered (79.2%) foreign body, followed by cloth (15.3%) and rope (12.3%). In addition, metal (0.9%) and calcified material and/or stone (1.0%) were found in the reticulum of cattle. Lack of a plastic waste disposal system in the area as well as communal/free grazing of livestock in highly waste-polluted areas seemed to be major factors in the high occurrence of foreign bodies in ruminants. To change this, collaborative intervention schemes involving professionals, policy makers, livestock keepers and environmental activists are needed.
Show more [+] Less [-]Occurrence of porcine cysticercosis in free-ranging pigs delivered to slaughter points in Arapai, Soroti district, Uganda
2015
Zirintunda, Gerald(Busitema University Department of Animal Production and Management ,Ministry of Agriculture, Animal Industry and Fisheries, Department of Livestock Health and Entomology) | Ekou, Justine(Busitema University Department of Animal Production and Management)
Poverty, hunger and the need for production of pigs with meagre or zero inputs have made most farmers release their pigs to range freely, thus creating a pig-human cycle that maintains Taenia solium, the pig tapeworm and cause of porcine cysticercosis, in the ecosystem. A preliminary study was designed to establish the prevalence of porcine cysticercosis by postmortem examination of the tongue and carcass of free-range pigs from February to April 2014 in Arapai subcounty, Soroti district, eastern Uganda. The tongue of each pig was extended and examined before deep incisions were made and the cut surfaces were examined. The rest of the carcasses were examined for cysts. Out of 178 pigs examined, 32 were qualitatively positive for porcine cysticercosis, representing a prevalence of 18.0%. This high prevalence represents a marked risk to the communities in the study area of neurocysticercosis, a debilitating parasitic zoonosis. Proper human waste disposal by use of pit latrines, confinement of free-range pigs and treatment with albendazole and oxfendazole are recommended.
Show more [+] Less [-]The effect of Rift Valley fever virus Clone 13 vaccine on semen quality in rams
2015
Brown, Geoff(University of Pretoria Department of Production Animal Studies) | Venter, Estelle H.(University of Pretoria Department of Veterinary Tropical Diseases) | Morley, Paul(Colorado State University Diagnostic Medicine Center) | Annandale, Henry(University of Pretoria Onderstepoort Veterinary Academic Hospital)
Rift Valley fever (RVF) is an arthropod-borne viral disease of importance in livestock and humans. Epidemics occur periodically in domestic ruminants. People in contact with infected livestock may develop disease that varies from mild flu-like symptoms to fatal viraemia. Livestock vaccination may assist in disease control. Rift Valley fever virus (RVFV) Clone 13 is a relatively new vaccine against RVF, derived from an avirulent natural mutant strain of RVFV, and has been shown to confer protective immunity against experimental infection with RVFV. The hypothesis tested in the current trial was that rams vaccinated with RVFV Clone 13 vaccine would not experience a reduction in semen quality (measured by evaluating the percentage progressively motile and percentage morphologically normal spermatozoa in successive ejaculates) relative to unvaccinated control animals. Ram lambs were screened for antibodies to RVFV using a serum neutralisation test. Animals without detectable antibodies (n = 23) were randomly allocated to either a test group (n = 12) or a control group (n = 11). Animals in the test group were vaccinated with RVFV Clone 13 vaccine. Daily rectal temperature measurements and weekly semen and blood samples were taken from all animals. Seven animals were eliminated from the statistical analysis because of potential confounding factors. Logistic regression analysis was performed on data gathered from the remaining animals to determine whether an association existed between animal group, rectal temperature and semen quality parameters. No correlation existed between the treatment group and values obtained for the semen quality parameters measured. There was no statistically significant post-vaccination decline in the percentage of live morphologically normal spermatozoa, or the percentage of progressively motile spermatozoa, either when assessed amongst all animals or when assessed within individual groups. A repeat study with a larger sample size and a more comprehensive pre-screening process may be indicated to avoid the inclusion of unsuitable animals.
Show more [+] Less [-]Determination of oxytetracycline residues in cattle meat marketed in the Kilosa district, Tanzania
2015
Kimera, Zuhura I.(Ministry of Livestock and Fisheries Development Department of Fisheries Development) | Mdegela, Robinson H.(Sokoine University of Agriculture Department of Veterinary Medicine and Public Health) | Mhaiki, Consolatha J.N.(Sokoine University of Agriculture Department of Soil Science) | Karimuribo, Esron D.(Sokoine University of Agriculture Department of Veterinary Medicine and Public Health) | Mabiki, Faith(Sokoine University of Agriculture Department of Physical Science) | Nonga, Hezron E.(Sokoine University of Agriculture Department of Veterinary Medicine and Public Health) | Mwesongo, James(Sokoine University of Agriculture Department of Physical Science)
Oxytetracycline is used to treat various diseases in cattle. However, its use may be associated with unacceptable residue levels in food. Oxytetracycline residues in tissues from indigenous cattle were determined in a cross-sectional study conducted in the Kilosa district, Tanzania, between November 2012 and April 2013. A total of 60 tissue samples, including muscle, liver and kidney, were collected from slaughterhouses and butchers and analysed for oxytetracycline using high-performance liquid chromatography. Oxytetracycline residues were found in 71.1% of the samples, of which 68.3% were above acceptable regulatory levels. The mean concentration of oxytetracycline across tissues was 3401.1 μg/kg ± 879.3 μg/kg; concentrations in muscle, liver and kidney were 2604.1 μg/kg ± 703.7 μg/kg, 3434.4 μg/kg ± 606.4 μg/kg and 3533.1 μg/kg ± 803.6 μg/kg, respectively. High levels of oxytetracycline residue in meat from indigenous cattle may pose a health threat to consumers in Kilosa. The findings possibly reflect a general lack of implementation of recommended withdrawal periods, ignorance about drug use and lack of extension services. Strict regulation of the use of antimicrobial drugs in the livestock industry and associated testing of animal-derived food sources prior to marketing are required.
Show more [+] Less [-]Peste des petits ruminants outbreaks in White Nile State, Sudan
2015
Ishag, Osama M.(Rabak Veterinary Research Laboratory) | Saeed, Intisar K.(Veterinary Research Institute Department of Virology) | Ali, Yahia H.(Veterinary Research Institute Department of Virology)
Eight outbreaks of peste des petits ruminants in sheep and goats were reported in White Nile State, Sudan, between 2008 and 2009. A mortality rate of 4.2% was reported across the different outbreaks. Clinically the disease was characterised by high fever, ocular and nasal discharge, pneumonia, ulceration of the mucous membranes, diarrhoea and death. The postmortem findings included necrotic lesions in the mouth and gastrointestinal tract, and swollen, oedematous lymph nodes associated with the lungs and intestine. Of the 209 serum samples tested by competitive enzyme-linked immunosorbent assay, 113 (54%) were found positive. Peste des petits ruminants virus was confirmed in tissues, nasal swabs and blood samples by immunocapture enzyme-linked immunosorbent assay, reverse-transcription polymerase chain reaction and isolation of the virus in culture of lamb testicle cells.
Show more [+] Less [-]A review on the effect of macrocyclic lactones on dung-dwelling insects: Toxicity of macrocyclic lactones to dung beetles
2015
Jacobs, Carmen T.(University of Pretoria Department of Zoology and Entomology) | Scholtz, Clarke H.(University of Pretoria Department of Zoology and Entomology)
Avermectins and milbemycins are commonly used in agro-ecosystems for the control of parasites in domestic livestock. As integral members of agro-ecosystems with importance in maintaining pasture health through dung burial behaviour, dung beetles are an excellent non-target bio-indicator taxon for examining potential detrimental effects of pesticide application. The current review focuses on the relative toxicity of four different anthelmintics (ivermectin, eprinomectin, doramectin and moxidectin) in dung residues using dung beetles as a bio-indicator species. One of the implications of this review is that there could be an effect that extends to the entire natural assemblage of insects inhabiting and feeding on the dung of cattle treated with avermectin or milbemycin products. Over time, reduced reproductive rate would result in decreased dung beetle populations and ultimately, a decrease in the rate of dung degradation and dung burial.
Show more [+] Less [-]Congenital systemic melanosis in a black mongrel pig
2015
Jeong, Y.J., Division of Animal Disease Diagnosis, Department of Animal Disease Control and Quarantine, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Jung, J.Y., Division of Animal Disease Diagnosis, Department of Animal Disease Control and Quarantine, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Her, J.W., Division of Animal Disease Diagnosis, Department of Animal Disease Control and Quarantine, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Baek, K.H., Division of Animal Disease Diagnosis, Department of Animal Disease Control and Quarantine, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Lee, J.H., Division of Animal Disease Diagnosis, Department of Animal Disease Control and Quarantine, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Lee, M.H., Division of Animal Disease Diagnosis, Department of Animal Disease Control and Quarantine, Animal and Plant Quarantine Agency, Anyang, Republic of Korea | Yoon, S.S., Division of Animal Disease Diagnosis, Department of Animal Disease Control and Quarantine, Animal and Plant Quarantine Agency, Anyang, Republic of Korea
Four 3-day-old piglets with retarded growth were submitted to the Animal and Plant Quarantine Agency for diagnosis. Necropsy showed that one piglet had black spots ranging from 2 mm to 1 cm in diameter in the cerebellum, lungs, regional lymph nodes, and cecum. Histological findings were consistent with the gross appearance in which melanin pigmentation was observed in the organs mentioned above. Based on Fontana-Masson staining, we diagnosed this animal with systemic melanosis. To the best of our knowledge, this is the first case of systemic melanosis in black breeds of swine in Korea.
Show more [+] Less [-]Cervical lung lobe herniation in a Pekingese dog
2015
Choi, R., Section of Small Animal Internal Medicine, College of Veterinary Medicine, Kangwon National University, Chuncheon, Republic of Korea | Suh, S.I., Section of Small Animal Internal Medicine, College of Veterinary Medicine, Kangwon National University, Chuncheon, Republic of Korea | Hyun, C., Section of Small Animal Internal Medicine, College of Veterinary Medicine, Kangwon National University, Chuncheon, Republic of Korea
An 8-year-old intact male Pekingese (weighing 13 kg) was presented for evaluation of chronic coughing. Thoracic radiography found a redundant tissue swelling (protruded on expiration and collapsed on inspiration) on the ventral neck just cranial to the thoracic inlet. Fluoroscopy also identified that the cranial portion of the right/left cranial lung lobe was seen to protrude through the thoracic inlet into the ventral neck on expiration. On the echocardiogram, there were no abnormal jets in all cardiac valves and no dilation in all cardiac chambers. Based on diagnostic imaging studies, the case was diagnosed as cervical lung lobe herniation.
Show more [+] Less [-]Evaluation of conservation of endangered species through somatic cell nuclear technology
2015
Hyun, S.H., Sooam Biotech Research Foundation, Seoul, Republic of Korea | Jeong, Y.W., Sooam Biotech Research Foundation, Seoul, Republic of Korea | Hwang, K.C., Sooam Biotech Research Foundation, Seoul, Republic of Korea | Lee, G.J., Technology Strategy Planning Office, Seoul, Republic of Korea | Yang, I.S., Sooam Biotech Research Foundation, Seoul, Republic of Korea
The number of wild animal species is gradually decreasing due to poaching, hunting and habitat loss. While several endangered animal species have been successfully preserved at the zoo, assisted reproductive technology (ART) must be applied to restore wild animals. In the case of critically endangered animals, somatic cell cloning is considered the most appropriate method of ART. Somatic cell cloning can be beneficial for the reproduction of endangered species with limited female populations. However, gene and cell banks, and understanding of reproductive physiology and optimization of ART for wild animals are urgently required for further activation of artificial reproduction of endangered species, which enlarges its application and maintains biodiversity. Care should also be taken to consider ethical and legal issues associated with somatic cell cloning for conservation of endangered animals.
Show more [+] Less [-]