| Registro completo |
| Provedor de dados: |
R. Bras. Zootec.
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| País: |
Brazil
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| Título: |
Levels of digestible methionine+cystine in diets for high genetic potential barrows from 95 to 125 kg
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| 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
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| Data: |
2011-03-01
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| Ano: |
2011
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| Palavras-chave: |
Carcass
Genotype
Late finishing
Performance
Sulfur amino acids
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| 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.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000300016
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| Editor: |
Sociedade Brasileira de Zootecnia
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| Relação: |
10.1590/S1516-35982011000300016
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Zootecnia v.40 n.3 2011
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| Direitos: |
info:eu-repo/semantics/openAccess
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