Data/hora: 06/06/2024 05:35:50

Provedor de dados: | 96
País: | Brazil
Título: | Levels of digestible methionine+cystine in diets for high genetic potential barrows from 95 to 125 kg
Autores: | Santos,Fabrício de Almeida; Donzele,Juarez Lopes; Silva,Francisco Carlos de Oliveira; Oliveira,Rita Flávia Miranda de; Abreu,Márvio Lobão Teixeira de; Saraiva,Alysson; Haese,Douglas; Kill,João Luís.
Data: | 2011-03-01
Ano: | 2011
Palavras-chave: | Carcass; Genotype; Late finishing; Performance; Sulfur amino acids.
Resumo: | This study was carried out to evaluate the effects of increasing levels of digestible methionine+cystine on performance and carcass composition of high genetic potential barrows for lean deposition. Sixty-four barrows with initial weight of 95.46 ± 1.09 kg were allotted to a completely randomized block design, with four levels of digestible methionine+cystine (0.427, 0.466, 0.504, and 0.545%, corresponding to the digestible methionine+cystine:digestible lysine ratios of 57.0, 62.0, 67.0 and 73.0%, respectively), with eight replicates, and two animals per experimental unit. Experimental diets and water were provided ad libitum until the end of the experimental period when pigs reached 125.21 ± 2.49 kg. Levels of digestible methionine+cystine did not affect daily intake, daily weight gain and feed conversion of the animals, but they affected daily intake of digestible methionine+cystine which increased linearly. Levels of digestible methionine+cystine did not affect carcass weight, meat amount, backfat thickness at P2, and daily meat deposition. The digestible methionine+cystine level of 0.427%, corresponding to the digestible methionine+cystine:lysine ratio of 57.0% and to a daily digestible methionine+cystine intake of 14.20 g/d, provides the best performance and carcass traits for high genetic potential barrows in the phase of 95 to 125 kg.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000300016
Editor: | Sociedade Brasileira de Zootecnia
Relação: | 10.1590/S1516-35982011000300016
Formato: | text/html
Fonte: | Revista Brasileira de Zootecnia  v.40 n.3 2011
Fonte: | info:eu-repo/semantics/openAccess