肉用兔生长期日粮中最适蛋白能量比的研究

OPTIMUM PROTEIN-ENERGY RATIO IN THE DIETS FOR MEAT RABBITS IN GROWING PERIOD

48只生长塞北兔随机分成6组,饲喂不同蛋白能量比(DCP(g)/DE(MJ))的6种日粮(5.60,7.21,9.28,10.04,11.44,13.90),进行饲养试验、消化代谢和屠宰试验,用一元二次函数进行分析,结果表明,生长肉兔日粮中最适DCP(g)/DE(MJ)为:11.00～11.47,随着生长的进行,该值不断减小。生产中应用时生长前期可采用11.47,后期用11.00。

Experiments on feeding, digestion metabolism and slaughter were conducted by dividing 48 growing Saibei rabbits randomly into 6 groups and each fed ad libitum one of 6 kinds of diets with different protein-energy ratios(DCP g/DE MJ equal to 5.6, 7.21, 9.28, 10.04, 11.44, 13.90). The obtained data were analyzed by regression and the results suggested that the optimal DCP g/DE MJ in the diets for growing meat rabbits was 11.00-11.47 which must be decreased with growing of the rabbits. Therefore, 11.47 could be used at the early growing stage of the rabbits and 11.00 at the late stage.