家兔被毛粗毛率中若干性状的遗传特性初探

Genetic Study On Some Characters of Bristly Wool Rate in Domestic Rabbit

用德系安哥拉兔（ＧＡ）与新西兰白兔（ＮＺＷ）杂交，然后再用ＧＡ与Ｆ＿１回交。在ＧＡ、ＮＺＷ、Ｆ＿１、Ｆ＿（ｂ１（Ｌ）），和Ｆ＿（ｂ１（Ｓ）），中分析粗毛含量、两型毛含量、粗毛直径、绒毛直径、毛囊群数、亚毛囊群数以及次级毛囊数。分析结果表明：（１）毛囊群数和次级毛囊数的比例是形成家兔被毛中粗毛含量特征的主要原因；（２）毛囊群数和绒毛直径呈现了基因的加性效应，而次级毛囊数在Ｆ１中呈现负效应（一２９．４４％，Ｐ＜０．００５）；（３）“１１”基因型对毛囊群数和绒毛直径有着某种程度的抑制作用，而“Ｌ”基因对次级毛囊数有某种程度的抑制作用。

GermanAngora rabhts(GA)crcassed New Zealand white rabbits(NZW),thenF1 back-crossed to GA.The content of bristly wool and awns,the fibre diameter of bristly wool and woolywool,and the number of hair follicle group and sub一follicle group and secondary follicle wereanalysed in GA,NZW,F1,Fb1(L)and Fb1(S).(1)The main reason why the content of bristlv woolin domestic rabbits’fleece is the proportion of the number of hair follicle group and sub一folliclegroup.(2)The numberof hair follicle group and the fibre diameter of wooly wool display additiveeffect of gene, the number of secondary follicle in F1 displays negative effect(一29.44%,P<0.005). (3)To a certain extent,“11”genotype restrains the number of hair follicle group andthe fibre diameter of wooly wool,“L”gene restrains the number of secondary follicle.