Effect of Zinc Proteinate Supplementation to Corn-soybean Meal-based Chukar Partridge (Alectoris chukar) Diets on Growth Performance and Zinc Concentration of Some Tissues

摘要

The objective of the present study was to determine the effects of based corn-soybean diets containing different levels of organic zinc (Zn) from zinc proteinate (ZP) on performance, some carcass parameters and Zn concentrations of serum, liver and pancreas in chukar partridges. Total 240 1-d-old chukar partridges were divided into five experiment groups of 48 birds each and each treatment was replicated four times with 12 birds per replicate pen. The five treatments included: 1) Control, with supplemental Zn (inorganic source) coming only from ingredients; 2) Control + ZP (25 ppm Zn in diet); 3) Control + ZP (50 ppm Zn in diet); 4) Control + ZP (75 ppm Zn in diet); 5) Control + ZP (100 ppm Zn in diet). Supplemental Zn from ZP effected BW at 8 weeks and BWG at 0-8 weeks of age (p<0.05). Mean BWs and BWGs values were significantly smaller at 8 weeks and 0-8 weeks of age for chukar fed diet having 0 ppm added Zn than the other groups. Supplementation Zn from ZP effected FI at 0-8 and 0-16 weeks of age(p<0.05). Mean FIs values were significantly lower at 0-8 weeks of age for chukar fed diet having 75 ppm added Zn than the other groups. Supplemental Zn from ZP effected FCR at 0-8 weeks of age (p<0.05). There were significant difference between 0 and 50 ppm added Zn with 75 ppm added Zn groups for FCR at 0-8 weeks of age. There were significant difference between 0 ppm added Zn with the other groups for liver Zn oncentration. Mean liver Zn concentrations values were significantly lower for chukar fed diet having 0 ppm added Zn than the other groups. It concluded that a corn-soybean meal chukar partridges diet supplemented with 25 ppm Bioplex zinc is adequate on performance during the starter period, but Zn supplementation is not necessary during the growth period in this study.