Data/hora: 17/06/2024 12:09:27

Biblioteca(s): 	Embrapa Caprinos e Ovinos.	
Data corrente: 	10/09/2018	
Data da última atualização: 	10/09/2018	
Autoria: 	DARGIE, J. D.; BERRY C. I.; PARKINS, J. J.	
Título: 	The pathophysiology of ovine fascioliasis: studies on the feed intake and digestibility, body weight and nitrogen balance of sheep given rations of hay or hay plus a pelleted supplement.	
Ano de publicação: 	1979	
Fonte/Imprenta: 	Research in Veterinary Science, v. 26, n. 3, p. 289-395, May, 1979.	
Idioma: 	Inglês	
Conteúdo: 	Abstract: The effect of Fasciola hepatica on feed intake and digestibility, body weight and nitrogen balance was measured during the course of experimental infections in sheep given a diet of hay or hay with 'concentrate'. A system of paired feeding was used to allow comparisons between infected and control animals. After the sixth week the appetites and body weights of all infected animals declined but both features were more prominent in the group given the diet of hay alone. By week 14 these animals became moribund and were necropsied whereas those given hay with concentrate which had the same fluke burdens, survived until week 20. At necropsy, the loss of weight in both groups was comparable but greater than in their pair-fed uninfected controls, suggesting that inappetence was not solely responsible. Measurements of feed digestibility revealed few differences between infected and control animals on either diet, but nitrogen retention was markedly lower in the infected animals after the eighth week, and sufficient to account for their inferior weight performance. Reduced nitrogen retention was primarily a reflection of a high urinary excretion in the infected animals, faecal excretion remaining unaltered despite the loss of substantial amounts of nitrogen into the gut as a result of the parasites' haematophagic activities.	
Palavras-Chave: 	Dietary Proteins; Eating; Physiopathology.	
Thesaurus Nal: 	Animal feeding; Body weight; Digestion; Energy metabolism; Fascioliasis; Nitrogen metabolism; Sheep diseases.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Caprinos e Ovinos (CNPC)	
Exemplares: 	CNPC - (37567-1) - ADD - AP - PP -  -  -  - DIS