238 resultados para Veterinarians


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Mode of access: Internet.

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Shipping list no.: 92-237-P.

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Mode of access: Internet.

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Description based on: 1897.

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Mode of access: Internet.

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WI docs no.: Agr. 3:1-99.

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The liver plays a major role in the body's metabolism and, as such, is subject to a multitude of insults-infectious, toxic, metabolic, nutritional, traumatic, and neoplastic. Consequently, liver disease is not uncommon in avian and other exotic patients. As diagnostic modalities (and our experience in using them and interpreting them) improve, veterinarian are becoming more aware of the presence of (often subclinical) liver disease in their patients, and often of the specific nature of that disease. Through new research, veterinarians also are more able to appreciate the liver's unique function and metabolism and the role it plays in the function of the body as a whole. This understanding has led to a better awareness of how the liver responds to disease, and this has allowed refinements in the treatment of diseased and damaged livers. However, treating liver disease is not just about treating the organ; the patient as a whole must be supported and treated until a successful resolution has been achieved. Treatment therefore must be aimed at supporting the patient, treating the specific condition, and creating an environment that allows the liver to heal and regenerate. This article briefly reviews the anatomy and physiology of the liver and how it responds to insult. Treatment of liver disease then is discussed using the aims described above. (C) 2004 Elsevier Inc. All rights reserved.

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Objective To determine whether Treponema-associated papillomatous digital dermatitis (PDD) occurs in Australian dairy cattle. Design Mail-out questionnaire and histological and bacteriological examination of biopsy tissue from suspect PDD lesions. Procedure The questionnaire was mailed to 375 veterinarians to evaluate their knowledge of PDD, determine if they had observed the disease in Australian dairy cattle, and to request biopsy material from suspicious cases. Biopsies were examined for histological and bacteriological evidence of PDD, including for the presence of spirochaetes. Results Eighty-eight replies to the questionnaire were received (23.5%). Of 52 respondents who were aware of PDD as a possible cause of lameness, 26 reported observing the condition in Australian cattle. Of 32 respondents who were unaware of the condition, 6 reported observing lesions that might have been PDD. The majority of reports of PDD-like lesions came from the southern Australian states, the condition occurring during periods of high rainfall and proving responsive to topical or parenteral application of antimicrobials. Biopsies from five erosive lesions showed histological similarity to PDD whereas biopsies from five proliferative lesions were consistent with chronic inflammation, fibroma or cutaneous papilloma. The presence of spirochaetes was not demonstrated in any of the lesions by histological or bacteriological methods. Conclusion Anecdotal reports and analysis of biopsy material confirm that a condition similar to PDD does occur sporadically in dairy cattle in southern Australia. However, this condition has so far not been shown to be associated with the presence of spirochaetes in the lesions.

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A captive yellow-tailed black cockatoo (Calyptorhynchus funereus) and 2 free-living tawny frogmouths (Podargus strigoides), both native Australian species, were presented with neurologic signs including depression and pelvic limb paresis and paralysis. Despite supportive treatment, all 3 birds died or were euthanatized. On histologic examination, sections of metastrongyloid nematode larvae were found in the central nervous system of all 3 birds, whereas intact larvae, identified as Angiostrongylus cantonensis, were recovered from the brain and spinal cord of 2 birds. Angiostrongylus cantonensis, the rat lungworm. has an obligatory migratory phase through the host's central nervous system, which can cause severe pathologic lesions. Natural infections in accidental hosts have been documented only in mammals, and to our knowledge, angiostrongyliasis in avian hosts has not been previously reported.

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Objective To examine the ethical perspectives of the Australian live export trade. Design and method The perspectives of farmers and other industry personnel, overseas consumers, the Australian public, veterinarians and the assumed interests of transported animals are compared in relation to the ethical consequences. Animal welfare, societal, personal and professional ethics are identified and the ratification of different perspectives considered. Results and conclusions There are positive and negative aspects of the trade for each stakeholder group, and the overall position adopted by any individual reflects their perspective of the balance of these components. The debate as to whether Australia should continue with the trade will be best served by consideration of the interests of all parties in the trade, including the consumers and animals, which are among the most affected by the trade. There is a need for further research to address the major welfare problems for the animals, an openness to inspection on the part of the trade and balance in media reporting.

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To determine the clinical effect of systemic carboplatin administration in birds, 6 sulphur-crested cockatoos (Cacatua galerita) were anesthetized and infused intravenously or intraosseously with carboplatin at 5 mg/kg over 3 minutes. Four birds were euthanatized 96 hours after infusion and 2 birds given an intravenous dose were euthanatized 21 days after dosing. All birds tolerated the anesthesia and carboplatin infusion and recovered uneventfully. At 24 hours after dosing, all birds were bright and active. Within 12 hours of dosing, feed intake was reduced and 3 birds vomited, but these signs abated by 48 hours after dosing. Mean body weight decreased by 4% at 24 hours after dosing and continued to decrease, but not significantly, until 96 hours after dosing. Changes in packed cell volume (PCV) and plasma total solids reflected blood loss caused by sampling. The mean PCV decreased significantly by 6 hours after dosing, and the concentration of plasma total solids decreased significantly at 1 hour after dosing and continued to decrease until 12 hours after dosing before progressively and significantly increasing toward baseline values by 96 hours after dosing. At necropsy, myelosuppression was not observed in any bird and no evidence of carboplatin toxicity was found. These results provide veterinarians with useful data for formulating efficacious and safe protocols for platinum-containing compounds when treating neoplasia in parrots and other companion birds.

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Veterinarians are increasingly faced with examining and/or treating marine mammals during strandings or following requests from theme parks and zoos. A common request involving seals and sea lions regards dentition, either to age a wild animal or as part of the routine health of captive animals. The major problem with examining dentition is the lack of information available in the literature on normal dentition, particularly in juveniles, where eruption patterns may be used to age the animal. The information presented in this report details typical deciduous dentition in one Californian sea lion, a species commonly encountered in captivity.