摘要
崂山奶山羊是我国培育的一个山羊品种。本文通过来自１０只公羊的６４只女儿资料，对该品种的主要性状遗传参数进行了估测。结果表明：７和１２月龄的头长与额宽、１５０ｄ产奶量具有较高的遗传力（Ｐ＜０．０１）；７月龄的体重、体高和胸围、９０和３００ｄ产奶量、最高日产奶量是中等遗传力性状（Ｐ＜０．０５）。根据主要性状间的相关分析，有利于产奶量提高的性状为７月龄的头长、胸围和体高，１２月龄头长，妊娠期。
Laoshan dairy goat is a new developed goat bred in China.This paper studies its genetic parameters of main traits,by analysing records of sixty four females.These females are offsprings of ten male goats respectively.The results show that head length and forehead width at 7th and 12th months,milk yield at 150th days have high heritability (P<0.01);Body weight、height and heart girth at 7th months,milk yield at 90th and 300th days,peak day milk yield have midial heritability (P<0.05).According to the genetic,phenotypic and environmental corvelation coefficients between main traits and milk yield,the traits selected for improving milk yield should in clude head length,body height and heart girth at 7th months,head length at 12th month and gestation period.
出处
《山东农业大学学报（自然科学版）》
CSCD
1998年第1期41-45,共5页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
崂山奶山羊
体尺
产奶量
遗传参数
遗传力
山羊
Laoshan dairy goat
body measuriment
milk yield
genetic parameter
heritability
