【摘要】 本试验采用四川山地乌骨鸡与黄羽肉鸡两个鸡种，通过纯繁和正反杂交；进行生长发育的研究和生长曲线的拟合，结果表明：杂交可显著提高乌骨鸡的孵化率和成活率，日增重、料肉比均得到较大改善。相关分析表明，15周龄体重与5周龄体重间相关系数达0．65（P＜0．001），与5周龄胫长间相关系数达0．5以上（P＜0．001），可根据5周龄体重并结合5周龄胫长对种鸡进行早期选种。用Gompertz模型能很好地进行4个组合生长曲线的拟合。更多还原

【Abstract】 The experiment results indicate that crossing could significiently improve the hatchability and the survival rate of SMDBC. Meanwhile, the daily gain and the feed efficiency and the cummulativc growth of SMDBC arc all improved greatly. The correlation analysis suggests that the early selection could be carried out on 5-week-old according to the body weight and the shank length of this age, because the correlation coefficient of the body weight betweenthe week-old and 15-week-old is above 0 .65 (P < 0. 001 ), the correlation between the shank of snweek-old and the body weight of 15-week-old is above 0. 5. And the growth curve suggested that Gompertz Model is fit for describing four test groups’ gain process.更多还原