Comportamento ingestivo de cordeiros lactentes em azevém suplementados com glicerina bruta

Esta pesquisa foi conduzida com o intuito de avaliar o comportamento ingestivo de cordeiros lactentes mantidos em pasto de azevém e suplementados com diferentes percentagens de inclusão de glicerina bruta no comedouro privativo. Foram utilizados 32 cordeiros lactentes distribuídos nos tratamentos: 0, 10, 20 e 30% de glicerina bruta, em substituição ao milho, no suplemento isoproteico (18% de PB) fornecido diariamente em quantidade equivalente a 2% do peso corporal. Não houve efeito (p>0,05) das percentagens de inclusão de glicerina bruta sobre as variáveis observadas no comportamento ingestivo. Contudo, pode-se observar efeito (

Characteristics of carcass and of non-carcass components of lambs and hoggets fed high-concentrate corn or sorghum diets

ABSTRACT The objective of this study was to evaluate the characteristics of carcass and non-carcass components of lambs and hoggets finished in the feedlot with high-concentrate corn or sorghum grain-based diets. Thirty-two animals were finished, comprising 16 lambs (milk teeth) and 16 hoggets (two teeth), which were distributed in a completely randomized design in a 2 × 2 factorial arrangement (two sheep categories × two grains). For the variables final live weight, live weight at slaughter, hot carcass weight, cold carcass weight, hot carcass yield, cold carcass yield, carcass compactness index, subjective color, loin-eye area, fasting losses, external organs, internal organs, and for the weights, in kilograms, of neck, shoulder, ribs, and leg, there was a significant difference between categories. In the variables studied for the high-concentrate diets, significant differences were found for the ribs, expressed in relative values. Lambs have much higher fasting losses, a greater proportion of internal organs, and lighter-colored meat compared with hoggets. Hot and cold carcass yields, meat subjective color, and percentage of ribs are higher in feedlot-finished lambs and hoggets fed high-concentrate sorghum-based diets compared with those fed corn-based diets