| Registro completo |
| Provedor de dados: |
BABT
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| País: |
Brazil
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| Título: |
Metabolizable energy requirement for starting barrow pigs (15 to 30 kg) fed on the ideal protein concept based diets
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| Autores: |
Oliveira,Gisele Cristina de
Moreira,Ivan
Fraga,Alessandro Luís
Kutschenko,Marianne
Sartori,Iolanda Maria
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| Data: |
2005-09-01
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| Ano: |
2005
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| Palavras-chave: |
Synthetic amino acids
Carcass
Performance
Plasma urea nitrogen
Energy requirements
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| Resumo: |
The objective of this study was to determine the metabolizable energy (ME) requirement for starting barrow pigs. Forty-three animals, selected for their high lean gain, were allotted in a completely randomized block design, divided in four treatments with five blocks and two animals in each experimental unit. The diet in Treatment 1 consisted of 3,264 kcal of ME/kg containing 0.96% of digestible lysine, 0.55% of digestible methionine+cystine, 0.60% of digestible threonine, and 0.188% of digestible tryptophan reaching the ideal protein pattern. The diets in Treatments 2, 3, and 4 were similar to the diet in Treatment 1; nevertheless, the levels of ME in Treatments 2, 3, and 4 were 2, 4, and 6% higher than those in Treatment 1. The lysine:ME ratio, was mantained the same (2.82 g) in all treatments. The daily feed intake (DFI) and the feed:gain ratio (F:G) were not affected by the levels of ME. There was a linear increase of daily weight gain (DWG) and of daily energy intake (DEI). Later, a linear reduction in carcass protein percentage (CPP) and a linear increase of fat content and daily fat accretion (DFA) occurred. Results suggested that the required ME was of 3,264 kcal/kg or less for improved barrows (15 to 30 kg), of the dam line, fed with diets containing 0.96% of digestible lysine, formulated according to the ideal protein concept.
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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=S1516-89132005000600008
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| Editor: |
Instituto de Tecnologia do Paraná - Tecpar
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| Relação: |
10.1590/S1516-89132005000600008
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| Formato: |
text/html
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| Fonte: |
Brazilian Archives of Biology and Technology v.48 n.5 2005
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| Direitos: |
info:eu-repo/semantics/openAccess
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