9～12周龄固始鸡的能量和蛋白质需要量研究

Energy and Protein Requirements for Gushi Chickens at 9-12 Week Age

本试验选用8周龄固始鸡公母各432只,分群饲养。采用3×3因子设计,饲喂代谢能(ME)和粗蛋白质(CP)水平不同的9种玉米--鱼粉--豆粕型日粮。通过饲养试验、比较屠宰试验和代谢试验,研究了不同的能量和粗蛋白质水平对9-12周龄固始鸡雏鸡的生产性能、屠体成分的影响,根据三个试验的研究结果得出,固始鸡9-12周龄阶段日粮适宜的能量和粗蛋白质营养水平分别为:代谢能12.74MJ／kg,粗蛋白质16.03％,蛋能比12.59g／MJ。

In this experiment, 432 male and female chickens of 8 week-old were selected respectively and reared separately.3×3 factorial experiment was designed.Gushi chickens were fed with 9 diets which were corn-fish meal -soybean meal type under different metabolizable energy (ME)and crude protein (CP).The effects on the performances and carcass ingredients of 9-12 week-old Gushi chickens under different ME and CP concentrations were studied by rearing, comparative slaughter and metabolism experiments.According to the results of three experiments,the optimal dietary ME and CP levels of Gushi chickens were found out:ME,12.74MJ/kg,CP,16.03%,CP/ME,12.59g/MJ.