Effects of Dietary Hatchery Wastes on Some Productive and Physiological Characteristics of Broiler Chicks

This experiment was conducted to evaluate the effects of dietary different levels of hatchery wastes (HW) on performance, tibia ash and blood calcium and phosphorus concentrations in broiler chickens. Birds were fed a corn-soybean meal diet for 7 days. The experimental treatments included 3 dietary treatments containing 1.5, 3 and 4.5 percent HW, in addition to the control without hatchery wastes. Five replicate groups of 15 Ross 308 broiler chicks were allocated to each dietary treatment. Data were analyzed in a completely randomized design. Results of the experiment indicated that there were no significant differences between weight gains in different dietary treatments. Feed intake in chicks fed 4.5% HW was significantly higher (p<0.05) and those fed 3 % had lower feed intake. The results indicated that feed conversion in 4.5% HW treatment was significantly inferior compared to other treatments. Results of carcass analysis showed no significant differences between treatments. Also there were no significant differences between blood calcium and phosphorous among treatments. Treatments of 4.5 and 3 % hatchery wastes had significantly the highest tibia ash (p<0.05) content. Based on the result of this experiment, the utilization of HW as much as 3% can increase tibia strength without having adverse effect on broilers performance. Key Word: Hatchery Wastes, Productive, Physiological.