ESTIMATION OF GENETIC-PARAMETERS FOR BODY-WEIGHT TRAITS IN SQUAB PIGEONS

被引：9

作者：

AGGREY, SE ^{[1
]}

CHENG, KM ^{[1
]}

机构：

[1] UNIV BRITISH COLUMBIA,DEPT ANIM SCI,AVIAN GENET LAB,VANCOUVER V6T 1Z4,BC,CANADA

来源：

GENETICS SELECTION EVOLUTION | 1992年 / 24卷 / 06期

关键词：

PIGEON; HERITABILITY; GENETIC CORRELATIONS; BODY WEIGHT; WEIGHT GAIN;

D O I：

10.1051/gse:19920606

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Seven hundred and two squabs (young pigeons) from 144 pairs of Silver King x White King cross parents were reared by either their genetic or foster parents. Heritabilities were estimated for body weight at hatch, 3d, 1 wk, 2 wk, 3 wk and 4 wk (market age) of age and the values were 0.70, 0.23, 0.22, 0.21, 0.30 and 0.57, respectively. Genetic correlations among these body weight traits ranged from 0.26 to 0.82. Heritability estimates for weekly gains were 0.13, 0.00, 0.12 and 0.05. These estimates indicated that simultaneous genetic improvement of body weight at the different ages would be feasible. Production efficiency could be increased through selection to improve wk 3 body weight so that squabs could be marketed a week earlier than the current practice.

引用

页码：553 / 559

页数：7

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