巴马小型猪早期生长曲线拟合研究

摘要

对随机选择的32头(4窝)巴马小型猪0～25周期间每周平均体重进行测定,并用Logistic和Gompatz 2种模型对其进行拟合.结果表明:Logistic模型(R2=0.997)和Gompatz模型(R 2=0.999)均能够对巴马小型猪的生长曲线进行良好的拟合,尤以Gompatz模型生长曲线预测的结果更接近实际情况.Gompatz模型预测的巴马小型猪早期生长速度的拐点周龄和拐点体重分别为18周和14.388kg.%The average weekly body weight of 32 Bama miniature pigs randomly selected from 4 litters was measured during 0-25 weeks, and their growth curve was fitted by both logistic and Gompatz models. The results showed that their growth curve could be well fitted by both logistic mod-el(R2 =0. 997) and Gompatz model (R2 = 0. 999), and the prediction by the Gompatz model-fitted growth curve better approached the actual value. The Gompatz model-predicted inflexion point of Bama miniature pigs'early-stage growth curve was 18 weeks in age and 14.388 kg in body weight.