| Registro completo |
| Provedor de dados: |
R. Bras. Zootec.
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| País: |
Brazil
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| Título: |
Dietary net energy for gilts from 25 to 100 kg body weight
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| Autores: |
Marçal,Danilo Alves
Kiefer,Charles
Nascimento,Karina Márcia Ribeiro de Souza
Bonin,Marina de Nadai
Corassa,Anderson
Alencar,Stephan Alexander da Silva
Abreu,Rodrigo Caetano de
Silva,Jéssica Lira da
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| Data: |
2018-01-01
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| Ano: |
2018
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| Palavras-chave: |
Energy:protein ratio
Feed intake
Nutrition
Pig nutrition
Swine
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| Resumo: |
ABSTRACT This experiment was conducted to evaluate the growth performance and carcass characteristics of gilts from 25 to 100 kg body weight (BW) fed diets with increased net energy (NE) levels. Seventy-two gilts with initial BW of 23.24±2.47 kg were allotted to one of six dietary treatments (2300, 2380, 2460, 2540, 2620, and 2700 kcal NE kg−1) using a completely randomized block design, with two pigs per replicate, and six replicates per treatment. Corn-soybean meal-based diets were formulated to be fed in three phases (25 to 50, 50 to 70, and 70 to 100 kg BW). Soybean oil was added to replace the inert ingredient kaolin to meet the NE level of each diet. Increasing dietary NE decreased the average daily feed intake (ADFI) and improved the feed:gain ratio (F:G) and standardized ileal digestible (SID) lysine:gain ratio in all the phases evaluated. In the second phase, average daily gain increased with increasing dietary NE level, although SID lysine intake decreased. At the end of the first phase, increasing dietary NE increased backfat and decreased lean percentage. In the last phase, lean percentage linearly decreased as dietary NE increased. Increasing dietary NE for gilts from 25 to 100 kg BW decreases ADFI and improves F:G. However, as dietary NE increases, lean percentage decreases without affecting growth performance.
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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=S1516-35982018000100539
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| Editor: |
Sociedade Brasileira de Zootecnia
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| Relação: |
10.1590/rbz4720170341
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Zootecnia v.47 2018
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| Direitos: |
info:eu-repo/semantics/openAccess
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