珍珠长毛兔繁殖性能的研究

STUDIES IN THE REPODUCTION OF THE ZHENZHU ANGORA

对经选种选育、亲本纯繁、杂交创新、自群繁育四、五代８月龄２７３只初产母兔，６４只８月龄至周岁公兔的繁殖性能进行系统的测定分析。结果表明，母兔窝产仔７．２２±０．８３只，死胎率１．２７％，２１日龄时仔兔个体重达４１６±８７．２１ｇ，是初生时的８．５倍，４０日龄断奶重１ｋｇ，断奶时的育成率为９８％。公兔精液品质好，在春秋繁殖季节精子密度达２．９亿／ｍｌ，畸形精子率在３％以下。情期受胎率９４％，人工授精受胎率９３％。

The reproductions of the 273 does of 4￣5 generations according to the selection breading,pure breeding,cross breeding and inter se breeding,adn the 64bucks of 8 months to one year old ,were determined.The results showed that the oitter size of the doe was 7.22±0.83,the mortality of foetus was 1.29%.The individual weight of baby rabbit at 21 days was 416±87.21g,which was 8.5 tines the birth weight.The individual weaning weight at 40days was 1.0kg.The survival at weaning was 98%. The semen quality of the bucks was excellent.The sperm density atbreeding season in spring or autumn was 2.9 hundred millions/ml,the sperm malformation was below 3%.The doe coceptio rate was 94%,the conception rate after forsr insemination was 98%,and the onception rate after artificial insemination was 93%.