Droppings recycling by their feeding to Japanese quail on a low-protein diet
1996
Chrappa, V. | Sabo, V. | Jankela, J. (Slovenska Akademia Vied, Ivanka pri Dunaji (Slovakia). Ustav Biochemie a Genetiky Zivocichov)
The effect of feeding dried quail droppings in a low protein diet was investigated in quails at the age of 1 to 26 weeks with respect to the performance and its reversibility after repeated transition to a higher level of crude protein. The administration of low-protein diet decreased quail body weight by 11.3 %. Droppings feeding in this diet decreased body weight by 5.5 %. Grain mix conversion with droppings feeding improved by 12.5 % and by 31.5 % with the lower and higher protein content, respectively. Mortality was higher with the low-protein diet combined with droppings due to cannibalism (17.4 %). The low content of dietary crude protein delayed sexual maturity. The low-protein diet decreased egg production by 22.2 % and egg weight by 16.3 %. Droppings feeding in the low protein diet reduced egg production by 18.1 % and egg weight by 11.5 % but there was no difference with the higher protein content. Reversibility of egg production and egg weight was observed after transition to uniform feeding.
显示更多 [+] 显示较少 [-]