Data/hora: 25/04/2024 04:41:45

Biblioteca(s): 	Embrapa Caprinos e Ovinos.	
Data corrente: 	18/04/2017	
Data da última atualização: 	18/04/2017	
Autoria: 	RIIS, P. M.	
Título: 	Nitrogen balance amino acid flux rates and rates of whole body protein synthesis in lactating and in pregnant goats at different energy intakes.	
Ano de publicação: 	1988	
Fonte/Imprenta: 	Journal of Animal Physiology and Animal Nutrition, v. 60, n. 1/2, p. 86-95, Aug. 1988.	
Idioma: 	Inglês	
Conteúdo: 	Abstract: The relationship between amino acid flux rates, rates of whole body protein synthesis and body protein balances was studied in goats at different stages of lactation and pregnancy. In goats on a diet with high energy concentration the protein balance became slightly positive already the third week of lactation and this was associated with a high of body protein synthesis, namely 16 g day-1 kg BW-0.75. The corresponding rate for goats on diet with low energy concentration and with considerably negative protein balance was 4.3 g day-1 kg BW-07.5. In mid an late lactation protein balances were slightly positive and the average rate of whole body protein synthesis was 8,9 g day-+ Kg BW-0.75. Pregnancy was associated with a decrease in body protein synthesis. The results support the theory that the turnover rates and balance of body proteins during lactation are determined mainly by the body fuel supply. They also support the inital hypothesis that mobilization of body protein occurs because the rate of protein synthesis decreases more than does the rate of breakdown when fuel supply gets insufficicient in early lactation or with fasting. It is concluded that the model and methods presented give reliable estimates of body protein turnover rate and therefore are useful in the study of factors affecting body protein turnover and balance.	
Thesaurus Nal: 	Animal nutrition; Goats.	
Categoria do assunto: 	L Ciência Animal e Produtos de Origem Animal	
Registro original: 	Embrapa Caprinos e Ovinos (CNPC)	
Exemplares: 	CNPC - (33272-1) - ADD - AP - PP -  -  -  - DIS