RESUMO
There is a widely held belief that a horse can be accurately aged by an examination of its teeth but this belief has recently been questioned. In this study photographs were taken of the dentition of 434 thoroughbreds of known age. Four experienced equine clinicians provided estimates of the ages of the horses from the photographs. A comparison of the estimated and true ages showed large discrepancies in many cases and the discrepancies increased as the horse's true age increased. The results show that the ageing of horses from their dentition is an imprecise science. It is suggested that written records of the dental features are made on each occasion when a dental examination is made and that veterinary surgeons advise clients that estimating a horse's age from dental criteria can provide no more than an 'informed guess'.
Assuntos
Determinação da Idade pelos Dentes/veterinária , Envelhecimento/fisiologia , Dentição , Cavalos/fisiologia , Animais , Estudos de Avaliação como Assunto , Odontometria/veterinária , Fotografação , Registros/veterinária , Reprodutibilidade dos Testes , Dente/anatomia & histologiaRESUMO
Fever of unknown origin (FUO) is a syndrome characterised by prolonged, unexplained fever associated with non-specific signs of illness such as lethargy, inappetence and weight loss. This paper reviews the details of 63 horses affected by FUO. The cause was found to be infection in 43 per cent of the cases, neoplasia in 22 per cent, immune-mediated diseases in 6.5 per cent and miscellaneous diseases in 19 per cent; the cause remained undiagnosed in 9.5 per cent.
Assuntos
Febre de Causa Desconhecida/veterinária , Doenças dos Cavalos/diagnóstico , Animais , Doenças Autoimunes/veterinária , Feminino , Febre de Causa Desconhecida/etiologia , Cavalos , Infecções/veterinária , Masculino , Neoplasias/veterinária , Estudos RetrospectivosRESUMO
A number of laminitic outbreaks in dairy cattle which do not appear to conform to the usual aetiological picture are described. The nutritional and managemental factors of these cases are discussed.
Assuntos
Doenças dos Bovinos/epidemiologia , Surtos de Doenças/veterinária , Doenças do Pé/veterinária , Casco e Garras , Doença Aguda , Ração Animal , Animais , Bovinos , Indústria de Laticínios , Proteínas Alimentares , Feminino , Doenças do Pé/epidemiologia , Doenças do Pé/etiologia , Abrigo para Animais , Inflamação/veterinária , Gravidez , Oligoelementos , Reino UnidoRESUMO
A familial progressive muscular weakness is described in a herd of pietrain pigs. The onset of disease was at two to three weeks of age taking the form of a muscular tremor when the piglets were standing. An impaired gait followed and by 12 weeks of age the pigs had become permanently recumbent. The observed incidence of the syndrome and the breeding data available were consistent with an autosomal recessive inheritance of the condition.
Assuntos
Doenças Musculares/veterinária , Doenças dos Suínos/genética , Animais , Feminino , Masculino , Doenças Musculares/diagnóstico , Doenças Musculares/genética , Suínos , Doenças dos Suínos/diagnóstico , Síndrome/veterinária , Tremor/diagnóstico , Tremor/genética , Tremor/veterináriaRESUMO
A 10-month-old thoroughbred colt developed sudden complete blindness; no other neurological abnormality was detected. At necropsy 3.5 months later lesions were confined to both optic pathways in which there was extensive degeneration of axons and myelin and gliosis. The cause of the optic lesion was not determined but the lesion may be a toxic neuropathy.
Assuntos
Doenças dos Cavalos/patologia , Neurite Óptica/veterinária , Animais , Axônios , Gliose/patologia , Cavalos , Masculino , Neurite Óptica/patologiaRESUMO
Based on a series of 100 cases, the paper reviews the causes, diagnosis and treatment of apparent bowel obstruction in cattle with particular emphasis on non-obstructive tympanitic disorders of the intestine.
Assuntos
Doenças dos Bovinos , Obstrução Intestinal/veterinária , Acidose/veterinária , Animais , Bovinos , Doenças dos Bovinos/diagnóstico , Doenças dos Bovinos/cirurgia , Doenças do Ceco/diagnóstico , Doenças do Ceco/cirurgia , Doenças do Ceco/veterinária , Cólica/diagnóstico , Cólica/veterinária , Doenças do Colo/diagnóstico , Doenças do Colo/cirurgia , Doenças do Colo/veterinária , Desidratação/veterinária , Diagnóstico Diferencial , Motilidade Gastrointestinal , Obstrução Intestinal/diagnóstico , Obstrução Intestinal/cirurgia , Intestino Delgado , RúmenRESUMO
Four cases of fatal diaphragmatic rupture in the horse are described. In 2 cases there was no history of injury but the other 2 animals had sustained recent thoracic trauma. Three of the horses had signs of colic and bowel obstruction complicated, in 2 cases, by respiratory embarrassment; the fourth died rapidly, presumably of shock. Previously published cases are reviewed and the causes, clinical effects, diagnosis and treatment of the disorder are discussed.
Assuntos
Diafragma , Doenças dos Cavalos , Animais , Cólica/veterinária , Feminino , Doenças dos Cavalos/diagnóstico , Doenças dos Cavalos/cirurgia , Cavalos , Obstrução Intestinal/veterinária , Masculino , Insuficiência Respiratória/veterinária , Ruptura , Ruptura Espontânea , Traumatismos Torácicos/veterináriaRESUMO
The indications for laparotomy in 140 horses are analysed, with particular emphasis on the operative or autopsy findings in 82 cases of colic. In cases of exploratory laparotomy, the overall recovery rate was only 28 per cent but 48 of the 82 animals were considered to have inoperable lesions. The recovery rate and causes of death for each indication are briefly reviewed.
Assuntos
Doenças dos Cavalos/cirurgia , Laparotomia/veterinária , Animais , Arterite/veterinária , Castração/veterinária , Cesárea/veterinária , Cólica/veterinária , Colo , Doenças do Colo/veterinária , Feminino , Corpos Estranhos/veterinária , Cavalos , Histerectomia/veterinária , Neoplasias Intestinais/veterinária , Obstrução Intestinal/veterinária , Intussuscepção/veterinária , Linfoma não Hodgkin/veterinária , Masculino , Mesentério , Neoplasias Ovarianas/veterinária , Gravidez , Infecções Equinas por Strongyloidea/cirurgia , Anormalidade TorcionalRESUMO
Three horses suffering from malabsorption were shown to have alimentary lymphosarcoma predominantly affecting the small intestine and the associated lymph nodes. The diffuse cellular infiltration in two of the case produced marked changes in the villous architecture reducing the available mucosal surface area, and, with lowered or barely detectable disaccharidase activities, contributed to the impairment of digestive-absorptive processes. One of the horses maintained a voracious appetite and was not diarrhoeic, but failed to gain weight, indicating differences in the production and utilisation of energy sources absorbed from the small and the large intestines. A large proportion of plasma cells in the infiltrate, and the resulting morphological changes in two of the cases bore a striking resemblance to features of alpha chain disease, an immunodeficiency disease of man, although immunological studies were not conducted on these horses.