Effects of Non-Genetic Factors on Reproductive Traits of Jining Grey Goat
Li Xue
He Junmin
Liu Guifen
Wei Chen
Zhang Guoping
Ren Yifan
Mao Jingyi
Yang Cunming
Zhang Wenjing
Long Li
Tian Kechuan
Huang Xixia
Abstract：In order to explore the effects of non-genetic factors on reproductive traits of Jining Grey goats,a total of 2 912 pieces of data of ewe lambing records from 2012 to 2023 were collected from Jining Grey Goat Breeding Farm in Jiaxiang and Zhengdao Animal Husbandry Technology Co.,Ltd.in Caoxian in Shan-dong Province,and least squares analysis and multiple comparison analysis were used to analyze the effects of field,parity,year of lambing,season of lambing and type of lambing on reproductive traits.The results showed that different parities,lambing years and lambing types had extremely significant effects on reproduc-tive performance of ewes.Among them,lambing number and total lambing weight of ewes per parity in the fourth and above parities were the highest,and the more the total parity of ewes was,the higher the total lam-bing number and lambing weight were;field had a significant effect on average birth weight of lambs,and had very significant effects on other traits;lambing season had a significant effect on the average birth weight of lambs,but had no significant effect on lambing number and total lambing weight of ewes per parity,and the birth weight of lambs in summer was higher.In summary,the results of this study could lay the foundation for genetic parameter estimation and genetic evaluation of Jining Grey goats in the future,so as to formulate more accurate breeding programs.
Keywords：Jining Grey goatNon-genetic factorsReproductive traitsMultiple comparisons
Publication Date：2025-01-27
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：5( 151-155 )