矮小型肉鸡的早期选择研究  

Study on Early Selection of Mini-meat Birds

作　　者：王明发[1] 朱振华[1] 熊华东[1] 

机构地区：[1]河南省农业科学院畜牧兽医研究所

出　　处：《中国家禽》1998年第1期10-11,共2页China Poultry

摘　　要：研究测定了部分携带有ｄｗ基因鸡群从出壳到１０周龄体重及跖长的生长发育情况，并对前后期体重、跖长作相关分析。结果证明：ｄｗ基因对雏鸡２周龄前的体重增长及跖长发育无显著影响，４周龄时矮小型鸡与正常型鸡相比体重轻３８．３８％，跖长短１３．２８％，差异显著。初生重、跖长与１０周龄体重及跖长无显著性相关；４，６，８周龄各周体重与１０周龄体重间均表现为极显著相关；本研究得出的６条直线回归方程可用来根据早期体重预测１０周龄体重。矮小型鸡和正常型鸡一样可根据４周龄体重进行早期选种。４，６，８周龄各周跖长与１０周龄跖长间均有极显著相关；对矮小型鸡跖长的选择可提前到４周龄进行，而不必等到１０周龄之后，以利于种鸡早期进行限制饲养。The growth and development of body-weight at 10-week and metatarsus length of chicken with dwarf gene and norm chicken,the correlation between body-weight at earlier-stage and later-stage,metatarsus length are studied.The results showed that the effect of dwarf gene on body-weight and metatarsus length 2-week ago is not significant.At the age of 4-week,the body-weight and metatarsus length of mini-meat birds is 38.38% and 13.28%,lighter and shorter than those of norm chicken respectively,and the difference is significant.The correlation between body-weight,metatarsus length at birth and those at 10-week is not significant.The correlation between body-weight at 4-6-8 week and that at 10-week is significant(P<0.01).The 6 regression equations given by this study can be used to predict the body-weight at 10-week,mini-meat birds and norm birds both can be selected according to 4-week body-weight.The correlation between metatarsus length from 4-week and that at 10-week is significant(P<0.01).The selection of metatarsus length of mini-meat birds can be moved up to 4-week.

关 键 词：鸡 矮小型肉鸡 基因 体重 跖长 

分 类 号：S831.2[农业科学—畜牧学]