EFFECTS OF DIFFERENT DIETARY PROTEIN AND LIPID SOURCES ON LIVE PERFORMANCE, CARCASS COMPOSITION AND TISSUES DISTRIBUTION OF BROILER CHICKENS | ||
| Journal of Animal and Poultry Production | ||
| Article 6, Volume 30, Issue 10, October 2005, Pages 5869-5883 PDF (3.81 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jappmu.2005.238052 | ||
| Author | ||
| S. A. Ibrahim, | ||
| Department of Poultry production Faculty of Agriculture, Ain Shams University, P.O. Box 68, Hadayek Shoubra, 11241 Cairo, Egypt. | ||
| Abstract | ||
| The effects of dietary protein sources (fish meal, soybean meal, poultry by- product meal and poultry offal meal), dietary lipid sources (cottonseed oil and poultry fat) and sex on live performance and carcass composition and distribution of tissues over the carcass were studied. Dietary protein and lipid sources significantly affected live body weight at 6 weeks of age. At this age chicks fed poultry by-product meal had significantly heavier live body weight than those fd either soybean meal or fish meal. Feed intake and feed conversion were not significantly affected by dietary lipid sources, but differed significantly between dietary protein sources. Feed: gain ratio was markedly less efficient in birds fed soybean meal than those fed the other dietary protein sources. Carcass composition differed significantly between birds fed different dietary protein. Carcasses of chicks fed diet supplemented with poultry fat had more muscle and less fat than carcasses of chicks fed diet supplemented with cottonseed oil. The proportion of bone in carcass was not significantly affected by dietary lipid sources. Compared with female, male had similar proportions of muscle and bone with less proportion of fat. Dietary protein sources and sex did not influence the distribution of muscle throughout the carcass parts. Dietary protein and lipids sources had no significant effect on fat weight distribution. Sex differences in fat weight distribution were not significant. The proportion of total carcass bone in breast, thigh and wing were significantly affected by protein source diets. Dietary fat sources had no significant effect on bone weight distribution .. Significant differences in protein x lipid and sex x lipid interactions were found for the proportions of total muscle in breast, thigh and drumstick. | ||
| Keywords | ||
| Dietary protein and lipid sources; sex; live performance; carcass traits | ||
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