【摘要】 以辽宁绒山羊原种场育种核心群1988—1993年出生羊只及其后代的相关育种调查资料为依据,估计了辽宁绒山羊主要经济性状的遗传力、遗传相关和表型相关,分析了其年龄、性别、出生类型和母亲年龄等非遗传因素对经济性状的影响。结果表明:产绒量、净绒量、绒直径、绒长度、绒层高度、出生重、断奶重和体重的遗传力分别为0.357,0.685,0.421,0.263,0.312,0.647,0.337,0.571;产绒量与净绒量的遗传相关为0.718,表型相关为0.823;产绒量与绒层高度的遗传相关为0.623,表型相关为0.475;产绒量与绒直径的遗传相关为0.658,表型相关为0.278;产绒量与体重的遗传相关为0.713,表型相关为0.476;绒直径和体重的遗传相关为0.112,表型相关为0.139;体重与绒层高度、初生重、断奶重的遗传相关分别为-0.726,0.841,0.421,其表型相关分别为0.205,0.138,0.406。更多还原

【Abstract】 Effects of gae, sex, birth type and mother′s age on main economic traits and heritability, genetic and phenotypic correlations of the traits were studied in this paper. There were significant differences between sexes in all-economic traits apart from birth weight(P<0.01)Down weight, clean down weight, body weight, down diameter, down length, height of down layer increased obviously with the increase of age (P<0.01)Birth types affected significantly down weight, birth weight and weaning weight (P<0.01)Mother′s age affected birth weight, weaning weight and body weight(P<0.01)Heritabilities of down weight, clean down weight, down diameter, down length, height of down layer, birth weight, weaning weight and body weight were 0.357,0.685,0.421,0.263,0.321,0.647,0.337 and 0.571 respectively. Genetic correlation of down weight with clean weight, down diamerter, height of down layer and body weight were 0.718,0.658,0.632 and 0.713 respectively, and phenotypic correlation 0.823,0.278,0.475 and 0.476 respectively. Genetic and phenotypic correlation of down diameter with body weight were 0.112 and 0.139, genetic correlation of body weight with height of down layer, birth weight and weaning weight were -0.726,0.841 and 0.421 respectively, and phenotypic correlation 0.205,0.138 and 0.406.更多还原