Redução do nível protéico da dieta, através da formulação baseada em aminoácidos digestíveis
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Data
2004-08-01
Autores
Araújo, Lúcio Francelino
Junqueira, Otto Mack [UNESP]
Araújo, Cristiane Soares da Silva [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
Universidade Federal de Santa Maria (UFSM)
Resumo
Um experimento foi conduzido para estudar a redução do nível protéico da dieta, através da formulação baseada em aminoácidos digestíveis, de frangos de corte na fase inicial. Foram utilizados 800 pintos machos, Cobb, as quais foram pesados e distribuídos em delineamento inteiramente casualizado, com 4 tratamentos (22%, 20% e 18% PB formuladas com aminoácidos digestíveis e 1 tratamento testemunha com 22% PB e formulada com aminoácidos totais), com 4 repetições de 50 aves cada. Foram avaliados o ganho de peso, consumo de ração e conversão alimentar. Quando as aves foram alimentadas com a dieta referência obtiveram, estatisticamente (P>0,05), o mesmo ganho de peso e conversão alimentar que as aves alimentadas com as dietas contendo 22% PB e formulada com aminoácidos totais e com 20% PB formulada com aminoácidos digestíveis. É possível trabalhar com dietas contendo menor nível protéico (20% PB) sem afetar o desempenho das aves, quando a dieta for formulada com aminoácidos digestíveis.
One experiment was conducted to study the reduction of protein level, through formulation based in digestible amino acids, using broilers in the initial phase. Eight hundred one-day-old male chicks, Cobb, were weighted and distributed in a random design, envolving four treatments (22%, 20% and 18% crude protein with digestible aminoacids and one control treatment with 22% crude protein based on total amino acids), envolving 4 replications of 50 birds each. Data from weight gain, feed intake and feed conversion were collected. When broilers were fed control diet, the same weight gain and feed conversion were obtained when compared with birds fed 22% crude protein and total amino acids and 20% crude protein formulated on digestible amino acids. It is possible to work diets with less protein level (20% crude protein) without affecting the performance when diet is formulated based on digestible amino acids.
One experiment was conducted to study the reduction of protein level, through formulation based in digestible amino acids, using broilers in the initial phase. Eight hundred one-day-old male chicks, Cobb, were weighted and distributed in a random design, envolving four treatments (22%, 20% and 18% crude protein with digestible aminoacids and one control treatment with 22% crude protein based on total amino acids), envolving 4 replications of 50 birds each. Data from weight gain, feed intake and feed conversion were collected. When broilers were fed control diet, the same weight gain and feed conversion were obtained when compared with birds fed 22% crude protein and total amino acids and 20% crude protein formulated on digestible amino acids. It is possible to work diets with less protein level (20% crude protein) without affecting the performance when diet is formulated based on digestible amino acids.
Descrição
Palavras-chave
Broilers, Digestible amino acid, Nutrition, proteinlevel, Aminoácidos digestíveis, Frangos de corte, nível protéico, Nutrição
Como citar
Ciência Rural. Universidade Federal de Santa Maria (UFSM), v. 34, n. 4, p. 1197-1201, 2004.