摘要
为了研究多浪羊及多浪羊与湖羊杂交二代(多湖F2代)体重与体尺的相关关系,试验采用SPSS 25.0软件对97只多湖F2代、101只多浪羊进行t检验,比较两个群体不同月龄(0,3,6,12月龄)的体重,同时对两个群体的3月龄羔羊体重与体尺指标进行表型分析、相关分析、回归分析并建立最优回归方程。结果表明:不同月龄的多湖F2代体重均高于多浪羊,且3月龄羔羊体重极显著高于多浪羊(P<0.01);3月龄多湖F2代和多浪羊的体重变异系数最大,分别为14.09%和14.29%;除胸围和十字部高外,其他体尺指标均表现为3月龄多湖F2代羔羊低于多浪羊;各体尺指标中均是胸围对体重影响最大,相关系数分别为0.727,0.625。两个群体的3月龄羔羊体重(y)均与体高(x_(1))、体长(x_(2))、胸围(x_(3))、胸深(x_(4))、胸宽(x_(5))、管围(x_(6))、十字部高(x_(9))呈极显著正相关(P<0.01),与耳长(x_(7))、耳宽(x_(8))呈显著正相关(P<0.05),其中多湖F2代羔羊胸围与胸深、胸宽、管围、十字部高呈极显著正相关(P<0.01),与耳宽呈显著正相关(P<0.05);3月龄多浪羊羔羊胸围与胸深、胸宽、管围呈极显著正相关(P<0.01),与十字部高呈显著正相关(P<0.05)。3月龄多湖F2代羔羊体高、胸围、胸深、胸宽对体重影响极显著(P<0.01),最优回归方程为y多湖F2代=0.254x_(1)+0.397x_(3)+0.366x_(4)+0.418x_(5)-36.505;3月龄多浪羊羔羊体高、胸围、胸深对体重影响极显著(P<0.01),最优回归方程为y_(多浪羊)=0.243x_(1)+0.399x_(3)+0.256x_(4)-24.920。说明体高、胸围、胸深和胸宽可作为3月龄多湖F2代羔羊繁育的重要体尺指标,体高、胸围、胸深可作为3月龄多浪羊羔羊繁育的重要体尺指标。
In order to study the correlation between body weight and body size in Duolang sheep and the second generation of the cross between Duolang sheep and Hu sheep(Duohu F2 generation),SPSS 25.0 software was used to perform t-test on a total of 97 Duohu F2 and 101 Duolang sheep,the body weight of the two populations at different months of age(0,3,6,12 months old).At the same time,phenotypic analysis,correlation analysis,regression analysis were performed on the 3-month-old body weight and body size of the two groups,and the optimal regression equation was established.The results showed that the body weight of Duohu F2 generation at different months was higher than that of Duolang sheep,and the 3-month-old body weight was significantly higher than that of Duolang sheep(P<0.01).The coefficient of variation of body weight of 3-month-old Duohu F2 generation and Duolang sheep was the largest,which were 14.09%and 14.29%respectively.Among the body measurements,except for the chest circumference and cross height,other body size indicators of the 3-month-old Duohu F2 generation lambs were lower than Duolang sheep;chest size has biggest effect on weight in all body size indicators,the correlation coefficients were 0.727 and 0.625 respectively.The 3-month-old weight(y)in the two groups was extremely significantly positively correlated with body height(x_(1)),body length(x_(2)),chest circumference(x_(3)),chest depth(x_(4)),chest width(x_(5)),tube circumference(x_(6)),and cross height(x_(9),P<0.01),and was significantly positively correlated with ear length(x_(7))and ear width(x_(8),P<0.05).Among them,the chest circumference of Duohu F2 generation lambs was extremely significantly positively correlated with chest depth,chest width,tube circumference and cross height(P<0.01),and was significantly positively correlated with ear width(P<0.05).The chest circumference of 3-month-old Duolang sheep was significantly positively correlated with chest depth,chest width,and tube circumference(P<0.01),and was significantly positively correlat
作者
郭锁鑫
王琼
刘玲玲
吕占文
苏晓慧
李道全
陈斌
刘武军
GUO Suoxin;WANG Qiong;LIU Lingling;LYU Zhanwen;SU Xiaohui;LI Daoquan;CHEN Bin;LIU Wujun(College of Animal Science,Xinjiang Agricultural University,Urumqi 830052,China;Turpan Vocational and Technical College,Turpan 838000,China)
出处
《黑龙江畜牧兽医》
CAS
北大核心
2021年第15期56-60,共5页
Heilongjiang Animal Science And veterinary Medicine
基金
国家重点研发计划项目(2018YFD0502101)
新疆维吾尔自治区重点研发计划项目(2017B01005-2-1)
新疆维吾尔自治区多浪羊品种选育推广技术体系项目。
关键词
多浪羊
多湖F2代
体重
体尺
相关分析
回归分析
Duolang sheep
Duohu F2 generation
body weight
body size
correlation analysis
regression analysis
