Effect of changes in live body weight and feed conversion ratio as influenced by enzyme supplements on basic post-slaughter measurements of broiler chickens fed cereal-based diets
2002
Szczurek, W. | Koreleski, J. (Research Institute of Animal Production, Balice (Poland). Dept. of Animal Nutrition)
The present work was designed to clarify the relationship between carcass yield (CY) and abdominal fat (AF) percentages with changes in final live body weight (LBW) and feed conversion ratio (FCR) in broilers as caused by supplementary feed enzymes. The experimental data set was obtained from a total of eleven growth trials carried out with chickens of currently used commercial strains. In all of the trials the chickens were fed ad libitum with mash diets based on home-grown cereals and soyabean meal, and containing fat additions, mainly as animal blended fat. Different commercial enzyme preparations were added to the diets either alone or in combination. The mean responses to enzymes were +86 g for final LBW, -0.08 g/g for FCR, +0.031 percent for CY and +0.024 percent for AF
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