甘肃肉用绵羊新品种选育群羊生长发育模型分析  

Analysis of Growth and Development Models of the Gansu Meat Sheep New Breed Population

作　　者：马友记[1] 胡祥[1] 李发弟[1] 姜仲文 

机构地区：[1]甘肃农业大学动物科学技术学院,甘肃兰州730070 [2]甘肃省永昌肉用种羊场,甘肃金昌737200

出　　处：《中国畜牧兽医》2013年第9期179-182,共4页China Animal Husbandry & Veterinary Medicine

基　　金：国家科技"十二.五"支撑计划(2011BAD28B05);国家肉羊产业技术体系(CARS-39)

摘　　要：试验采用Gompertz模型和Logistic模型拟合了甘肃肉用绵羊新品种选育群的早期生长发育过程。结果表明,2种模型拟合度均在0.91以上,拟合效果好,其中Gompertz模型在拟合度和预测体重效果方面较Logistic模型好。因此,采用Gompertz模型参数估算出甘肃肉用绵羊新品种选育群公、母羊的拐点体重分别是24.06和16.16 kg,拐点月龄是2.73和1.80个月,最大月增重是7.92和7.64 kg,瞬时生长率是7.27和5.18,相对生长率是0.21和0.17。由此证明Gompertz模型可以用于指导甘肃肉用绵羊新品种的选育。The Gompertz and Logistic models were used to study the production potential of Gansu meat sheep new breed population, so as to provide theoretical basis for meat sheep breeding. The results showed that the fitnesses （R2） of two kinds of models were above 0.91, the Gompertz model had higher R2 value and better predicting effect towards bodyweight. The Gompertz model was constructed for the Gansu meat sheep new breed population.The body weight at inflection age were 24.06 and 16.16 kg, inflection age were 2.73 and 1.80 months, the maximum monthly weight were 7.92 and 7.64 kg, the instantaneous growth rate were 7.27 and 5.18, the relative growth rate were 0.21 and 0.17, respectively. The results proved that the Gompertz model could be used to guide the production of Gansu meat sheep new breed.

关 键 词：甘肃肉用绵羊新品种群 生长发育 模型 

分 类 号：S826[农业科学—畜牧学]