Comparative effects of organic chromium, mannan oligosaccharides and zinc bacitracin on broiler performance and carcass characteristics
1999
Mateo, C.D. | Billena, M.S. (Philippines Univ. Los Banos, College, Laguna (Philippines). Inst. of Animal Science)
Five hundred day old Arbor Acre broiler chicks were used in a 42 day feeding trial to demonstrate the effects of organic chromium (Cr) from yeast; mannan oligosaccharides (MOS) and zinc bacitracin (ZnB) supplementation on performance and carcass characteristic of broilers. Performance of birds were better (P0.05) in feed supplemented with a growth promotant than those without. Supplementation of broilers with Cr and MOS in combination with ZnB and MOS alone significantly increased (P0.05) live body weight, weight gain, and feed efficiency during the first 3 weeks of life. MOS alone or in combination with ZnB proved to be superior (P0.05) to Zn B alone in improving growth performance of broilers. The combination of Cr and ZnB also positively influenced growth performance of broilers. The effects of MOS and Cr supplementation were not significant during the growing period. MOS and Cr tended to (not significant) increase breast yield and decrease fat yield in broilers. This study demonstrated that MOS can replace the use of the feed antibiotic, ZnB, to improve performance and carcass characteristic of broilers
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