VARIATION IN EGG-YOLK CHOLESTEROL CONCENTRATION BETWEEN AND WITHIN BREEDS OF THE DOMESTIC-FOWL

被引:15
|
作者
HALL, LM [1 ]
MCKAY, JC [1 ]
机构
[1] AFRC,INST ANIM PHYSIOL & GENET RES,EDINBURGH RES STN,ROSLIN EH25 9PS,MIDLOTHIAN,SCOTLAND
关键词
D O I
10.1080/00071669208417537
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
1. The pattern of variation for egg yolk cholesterol concentration between 5 commercial egg layer lines and a cross of Gallus domesticus is described. 2. Yolk cholesterol concentration in the cross was lower than in the lines, and 6.7% lower than the midparent value. 3. It is proposed that the reduced yolk cholesterol concentration of the cross may be a consequence of heterosis, although sex-linkage and/or maternal effects cannot be discounted. 4. The difference between the cross and parental lines is consistent with a physiological relationship between yolk cholesterol concentration and rate of egg production, but not between yolk cholesterol concentration and yolk weight.
引用
收藏
页码:941 / 946
页数:6
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