Busca avançada
Ano de início
Entree
(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Efficiency of methionine and cystine utilization by broiler chickens using stable isotopes

Texto completo
Autor(es):
Pacheco, Leticia G. [1] ; Sakomura, Nilva K. [1] ; Suzuki, Rafael M. [1] ; Dorigam, Juliano C. P. [2] ; Viana, Gabriel S. [3] ; Leme, Bruno B. [1]
Número total de Autores: 6
Afiliação do(s) autor(es):
[1] UNESP, Dept Anim Sci, Jaboticabal - Brazil
[2] Evonik Nutr & Care Gmbh, Hanau - Germany
[3] Nat Resources Inst Finland, Jokioinen - Finland
Número total de Afiliações: 3
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF ANIMAL PHYSIOLOGY AND ANIMAL NUTRITION; v. 104, n. 1 NOV 2019.
Citações Web of Science: 0
Resumo

The aim of this study was to develop a method to determine the efficiency of utilization of Met and Cys using stable isotopes in order to reduce the number of sacrificed animals relative to the comparative slaughter technique. Met and Cys efficiencies were obtained separately and as total SAA values. Twenty-one 14- to 28-day-old broiler chickens were fed experimental diets containing different Met:Cys ratios (44:56, 50:50 and 56:44). Birds were given diets with daily supplements of L-(N-15) Met (60 mmol/kg) or L-(N-15(2)) Cys (35 mmol/kg) throughout the entire experimental period. Excreta were collected daily, and birds were euthanized at the end of the trial to collect feather-free bodies and feathers. Samples were analysed for N-15 and N-15-Met content. The utilization efficiency for Met, Cys and Met + Cys for feather-free bodies was 55%, 75%, and 60%, while the efficiencies for feathers were estimated at 96%, 77% and 84% respectively. (AU)

Processo FAPESP: 15/25717-0 - Eficiência e incorporação dos compostos nitrogenados provenientes da L-(15N) metionina no crescimento de frangos de corte
Beneficiário:Letícia Graziele Pacheco
Linha de fomento: Bolsas no Brasil - Mestrado
Processo FAPESP: 13/25761-4 - Modelagem da produção e das exigências nutricionais de aves e peixes
Beneficiário:Nilva Kazue Sakomura
Linha de fomento: Auxílio à Pesquisa - Temático