黔画乌鸡选育F2代的生长曲线拟合与分析
GUIZHOU JOURNAL OF ANIMAL HUSBANDRY & VETERINARY MEDICINE（2022）
Abstract
为了解黔画乌鸡的生长发育规律,筛选出最佳的生长曲线拟合模型,运用Gompertz、Logistic、Von Bertalanffy 3种生长曲线拟合模型对0～22周龄黔画乌鸡选育F2代的体重数据进行拟合分析.结果:Von Bertalanffy模型对黔画乌鸡的生长曲线拟合效果最佳(公鸡R2=0.988,母鸡R2=0.990),Logistic模型的拟合效果最差(公鸡R2=0.981,母鸡R2=0.980).Von Ber-talanffy模型拟合公、母鸡的拐点周龄分别为10.830、9.758周,拐点体重分别为821.774、616.982 g.结论:Von Bertalanffy模型是拟合黔画乌鸡生长发育规律的最佳数学模型.公鸡模型表达式为:Y=2773.488(1-0.727e-0.072t)3;母鸡模型表达式为:Y=2082.313(1-0.693e-0.075t)3.
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