Abstract
Carcass characteristics of confinement-finished lambs fed on high moisture corn silage at different proportions. Effect of concentrated compounds either with unmixed corn silages or with sunflower or urea on the composition, performance and carcass yield of ½ Hampshire Dow and ½ without definite race lambs finished in feedlots was evaluated. Three treatments were evaluated: corn grain silages (CGS); CGS with sunflower grains; SGS with urea. Twenty-four male lambs, mean initial live weight of 23 kg, allotted in treatments (8 animals treatment -1 ), were employed. After slaughter, carcasses were weighed for hot carcass weight (HCW) and then refrigerated at 4°C for 24 hours for cold carcass weight (CCW). Mean live weight at slaughter was 31.1 kg with mean daily gain (MDG) of 0.164 kg. Mean HCW was 13.4 kg with a mean yield of 43.13% while mean CCW reached 12.8 kg. Since treatments did not affect variables, quality of concentrates was similar. Corn grains silages with sunflower grains and urea in lamb feed failed to affect the carcass's quantitative variables and their use is recommended for concentrates.
Highlights
Introdução O consumo de carne ovina vem aumentando nos últimos anos em regiões do Brasil com pouca tradição na ovinocultura
Para melhor atender ao consumidor é necessário que haja investimentos na cadeia produtiva, com objetivo de melhorar a eficiência de produção, Acta Scientiarum
S. Desempenho e características de carcaça de cordeiros Santa Inês confinados filhos de ovelhas submetidas à suplementação
Summary
O experimento foi conduzido na Fazenda Experimental de Iguatemi, Estado do Paraná, pertencente à Universidade Estadual de Maringá. Avaliou-se o desempenho de cordeiros em sistema confinado recebendo como volumoso, silagem de milho e concentrado formulado à base de silagens de grãos de milho (Tabela 1). Foram avaliados três tratamentos sendo: SGM - silagem de grãos de milho puro; SGMG -silagem de grão de milho com adição de 20% de grãos de girassol; SGMU - silagem de grão de milho com 1% de ureia. Os teores de matéria seca (MS), proteína bruta (PB) e cálcio (Ca) das silagens foram analisados, segundo métodos da AOAC (1990). Os teores de fósforo (P) foram analisados de acordo com Malavolta et al (1997). Ração Silagem de milho Silagem de grãos de milho Silagem de grãos de milho com 20% de girassol Silagem de grãos de milho com 1% de ureia Farelo de soja Mineral Total
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