Dietary supplementation with glutamine or glutamic acid for weanling piglets
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Data
2018-02-01
Autores
Amorim, Alessandro Borges
Dib Saleh, Mayra Anton [UNESP]
Miassi, Gabriela de Mello [UNESP]
Berto, Dirlei Antonio [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Empresa Brasil Pesq Agropec
Resumo
The objective of this work was to evaluate the effects of dietary glutamine and glutamic acid supplementation on carbon turnover (delta C-13) in the muscles of piglets, on animal performance, and on feed economic feasibility. The diets consisted of: control (C), 1% glutamine (G), and 1% glutamic acid (GA). In experiment I, 111 piglets were used to assess carbon turnover in the Masseter, Psoas major, and Abdominal internal oblique muscles in terms of their isotopic composition and C-13 substitution over time. In experiment II, 72 piglets were assigned randomly to blocks (eight replicates per treatment and three animals per experimental unit), in order to evaluate animal performance and feed economic feasibility. The GA diet promoted the best C-13 acceleration in the studied muscles. No diet effects were observed on performance variables. The G and GA diets presented higher costs than the C diet. Although supplementation with 1% glutamine or glutamic acid accelerates carbon turnover in the studied muscles, which suggests a faster recovery during post-weaning and proves the anabolic effect of these additives, its use is not economically viable for weanling piglets.
Descrição
Palavras-chave
Sus scrofa, additives, anabolic effect, carbon turnover, economic feasibility, stable isotopes
Como citar
Pesquisa Agropecuaria Brasileira. Brasilia Df: Empresa Brasil Pesq Agropec, v. 53, n. 2, p. 229-237, 2018.