| Revista: | Pesquisa veterinaria brasileira |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000301448 |
| ISSN: | 0100-736X |
| Autores: | Driemeier, David1 Colodel, Edson M1 Pilati, Celso2 |
| Instituciones: | 1Universidade Federal de Mato Grosso, Faculdade de Agronomia e Medicina Veterinaria, Cuiaba, Mato Grosso. Brasil 2Universidade para o Desenvolvimento do Estado de Santa Catarina, Centro de Ciencias Agroveterinarias, Lages, Santa Catarina. Brasil |
| Año: | 2000 |
| Periodo: | Ene-Mar |
| Volumen: | 20 |
| Número: | 1 |
| Paginación: | 31-38 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental |
| Resumen en inglés | The ground burs of Xanthium cavanillesii Schouw were force fed to 11 calves in single or repeated doses. Quantities of 5 g/kg and above were lethal and 4 animals died. A single dose of 3 g/kg caused moderate clinical signs in 1 calf. Weekly doses of 3 g/kg and 5 g/kg fed to 2 calves during 4 weeks and 2 weeks, respectively, did not cause poisoning. Hypoglicemia and increased levels of aspartate aminotransferase (AST) were detected only in the animals that showed clinical signs. These were observed between 7 hours and 12 hours after the beginning of the administration of the burs and included apathy, excessive salivation, generalized muscle tremors, trismus, diffuse sweating and decreased rate and intensity of ruminal movements. Locomotor disturbances consisted of stiff and incoordinated gait, unwillingness to move, and recumbency. In the terminal stages, there were convulsive seizures, paddling movements, muscle spasms, apnea and death. One animal recovered from the disease. In this case, the clinical picture was similar to the one of the animals that died, although less intense. The first signs were observed 18 hours after the beginning of the administration and lasted 72 hours. Liver biopsies from that animal revealed coagulative hepatocellular necrosis associated with congestion and hemorrhages. The degenerative and necrotic hepatocellular changes were less intense with longer evolution of the clinical picture. In the calf that died, microscopic lesions were observed in liver biopsies 12 hours after the beginning of administrati |
| Disciplinas: | Medicina veterinaria y zootecnia, Biología |
| Palabras clave: | Bovinos, Nutrición animal, Botánica, Asteraceae, Xanthium cavanillesii, Plantas tóxicas, Intoxicación experimental, Necrosis, Hígado |
| Keyword: | Veterinary medicine and animal husbandry, Biology, Animal nutrition, Bovines, Botany, Asteraceae, Xanthium cavanillesii, Toxic plants, Experimental intoxication, Necrosis, Liver |
| Texto completo: | Texto completo (Ver HTML) |
