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研究浦东白猪育肥阶段生长发育规律,并拟合其生长曲线。以87头饲养于生产性能测定系统(FIRE系统)的浦东白猪的生长发育数据(98 d到252 d)为基础,研究其生长发育规律。利用2种非线性模型对浦东白猪生长曲线进行拟合,获得了较理想的拟合效果。其中,以Logistic模型的拟合优度最高,拟合结果最接近真实情况。在Logistic模型拟合生长曲线中,浦东白猪公猪最大理论体重为128.719 kg,生长拐点体重是46.360 kg,拐点日龄是198.237日龄,最大日增重为514.871 g/d;浦东白猪母猪最大理论体重为111.773 kg,生长拐点体重是55.887 kg,拐点日龄是184.622日龄,最大日增重为447.089 g/d。
Study Pudong white pig fattening growth and development of the law, and fit their growth curve. Based on the growth and development data of 87 Pudong white pigs housed in the FIRE system (98 days to 252 days), the growth and development of 87 pigs were studied. Two kinds of nonlinear models were used to fit the growth curves of Pudong White pigs, and a better fitting result was obtained. Among them, the Logistic model has the highest goodness of fit and the fitting result is the closest to the real situation. The maximum theoretical body weight of Pudong white pig boar was 128.719 kg, the growth inflection point weight was 46.360 kg, the inflection point day was 198.237 days, and the maximum daily gain was 514.871 g / d. The maximum Pudong white pig sow The theoretical body weight was 111.773 kg, the weight at the inflection point of growth was 55.887 kg, the inflection point day was 184.622 days, and the maximum daily gain was 447.089 g / d.