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https://locus.ufv.br//handle/123456789/31112
Tipo: | Artigo |
Título: | Dietary net energy plans for barrows from 25 to 100 kg body weight |
Autor(es): | Marçal, Danilo Alves Kiefer, Charles Nascimento, Karina Márcia Ribeiro de Souza Bonin, Marina de Nadai Corassa, Anderson Alencar, Stephan Alexander da Silva Santos, Alexandre Pereira dos Rodrigues, Gabriela Puhl |
Abstract: | This experiment was conducted to evaluate growth performance and carcass characteristics of barrows from 25 to 100 kg fed diets with different dietary net energy (NE) levels. Seventy-two barrows with initial body weight (BW) of 25.19±2.13 kg were allotted using a completely randomized block design to one of six dietary NE treatments (2300, 2380, 2460, 2540, 2620, and 2700 kcal kg−1 ), which had two pigs per replicate and six replicates per treatment. Diets were formulated to be fed in three phases (25 to 60, 60 to 70, and 70 to 100 kg BW). The six different dietary NE densities were met by adding soybean oil in place of the inert ingredient (kaolin) to a corn-soybean meal-based diet. Increasing dietary NE decreased average daily feed intake and average daily standardized ileal digestible (SID) lysine intake in all of the three phases evaluated and improved the feed:gain ratio and SID lysine:gain ratio in the first and third phases. In the first and second phases, average daily NE intake and NE:gain ratio were similar among treatments, but NE increased and NE:gain worsened during the last phase as dietary NE increased. Average daily gain was not affected by dietary NE in the first and second phases; however, it improved in the last phase. Backfat was thicker, and lean percentage was reduced by increasing the dietary NE in all three phases of this study. Thus, barrows consume less feed, but carcass fat increases if dietary NE is increased from 2300 to 2700 kcal kg−1 |
Palavras-chave: | carcass quality fat feed intake swine vegetable oil |
Editor: | Brazilian Journal of Animal Science |
Tipo de Acesso: | Creative Commons Attribution License |
Identificador DOI: | https://doi.org/10.1590/rbz4720180038 |
URI: | https://locus.ufv.br//handle/123456789/31112 |
Data do documento: | 10-Nov-2018 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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1806-9290-rbz-47-e20180038.pdf | artigo | 290,78 kB | Adobe PDF | Visualizar/Abrir |
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