黔画乌鸡产蛋率和累计产蛋数曲线拟合分析  

Curve Fitting Analysis of Egg Production Rate and Accumulative Number of Egg Laying of Qianhua Black-bone Chickens

作　　者：苗小猛 刘嘉 李益 冯宇隆[1] 梁应林[1] 李洪曙[1] 唐继高[1] 韩雪[1] MIAO Xiaomeng;LIU Jia;LI Yi;FENG Yulong;LIANG Yinglin;LI Hongshu;TANG Jigao;HAN Xue(Guizhou Institute of Animal Husbandry and Veterinary Science,Guiyang 550005,China;Guizhou Province Livestock and Poultry Genetic Resources Management Station,Guiyang 550001,China;Agricultural and Rural Bureau of Qianxinan Prefecture,Xingyi 562400,China)

机构地区：[1]贵州省畜牧兽医研究所,贵州贵阳550005 [2]贵州省畜禽遗传资源管理站,贵州贵阳550001 [3]黔西南州农业农村局,贵州兴义562400

出　　处：《云南农业大学学报（自然科学版）》2022年第5期820-826,共7页Journal of Yunnan Agricultural University:Natural Science

基　　金：贵州省科研机构服务企业行动计划项目(黔科合服企[2019]4017号);贵州省地方家禽产业联合攻关项目;贵州省科技计划项目(黔科合支撑[2017]2553-1号)。

摘　　要：【目的】探究黔画乌鸡的产蛋规律,筛选出最佳的产蛋曲线拟合模型。【方法】对黔画乌鸡选育基础群20~43周龄的产蛋率和累计产蛋数进行统计,运用拟合模型对黔画乌鸡的产蛋率(伍德模型、杨宁模型、分室模型和三次方程)和累计产蛋数(Gompertz、Logistic和Von Bertalanffy模型)进行拟合分析,并与实际观测值进行比较。【结果】杨宁模型对黔画乌鸡的产蛋率曲线拟合效果最佳,拟合度(R2)为0.982;伍德模型的拟合效果最差,R^(2)值为0.830。Gompertz模型、Logistic模型和Von Bertalanffy模型均能很好地拟合黔画乌鸡的累计产蛋数曲线,尤以Von Bertalanffy模型的拟合值与观测值最为接近,R2值为0.999。【结论】杨宁模型和Von Bertalanffy模型是黔画乌鸡的最佳产蛋曲线拟合模型,对黔画乌鸡的选育和饲养管理具有重要的指导意义。[Purpose]To explore the egg laying rule of Qianhua black-bone chickens and screen the best curve fitting models.[Methods]The egg laying rate and accumulative number of egg laying of Qianhua black-bone chickens(the basic population for selection)from 20-43 weeks of age were counted and analysed.The fitting models were utilized to fit the egg production rate(Wood model,Yang-Ning model,McMillan model and cubic equation)and accumulative number of egg laying(Gompertz model,Logistic model and Von Bertalanffy model),and model fitting values were compared with the observed values.[Results]Yang-Ning model had the best fitting effect for the curve of egg produc-tion rate of Qianhua black-bone chickens,the goodness-of-fit(R2 value)was 0.982;the fitting effect of Wood model was the worst,and the R2 value was 0.830.The Gompertz model,Logistic model and Von Bertalanffy model could all fit the curve of accumulative number of egg laying well,especially the fitting values of Von Bertalanffy model were closest to the observed values,and the R2 value was 0.999.[Conclusion]Yang-Ning and Von Bertalanffy are the best egg curve fitting models for the egg laying rule of Qianhua black-bone chickens,which have important guiding significance for the breeding and feeding management of Qianhua black-bone chickens.

关 键 词：黔画乌鸡 产蛋规律 拟合模型 

分 类 号：S831.89[农业科学—畜牧学]