A NOTE ON CONSEQUENCES OF SINGLE-TRAIT SELECTION FOR INSULIN-LIKE GROWTH-FACTOR-I (IGF-1) IN BEEF HEIFERS

被引：3

作者：

DAVIS, ME ^{[1
]}

BISHOP, MD ^{[1
]}

机构：

[1] USDA ARS,ROMAN L HRUSKA US MEAT ANIM RES CTR,CLAY CTR,NE 68933

来源：

ANIMAL PRODUCTION | 1994年 / 59卷

关键词：

BEEF CATTLE; BIOLOGICAL INDICATORS; IGF-1; SELECTION; SOMATOMEDIN;

D O I：

10.1017/S0003356100007819

中图分类号：

S8 [畜牧、动物医学、狩猎、蚕、蜂];

学科分类号：

0905 ;

摘要：

Eight sets of identical twin heifers and their first three calf crops were used to determine effects of single-trait selection for blood serum insulin-like growth factor 1 (IGF-1). Twin heifers were offspring of Simmental sires and Hereford X Simmental or Hereford X Angus dams. All 16 heifers were mated with the same Simmental bull in each year of the study to produce calves born in 1989, 1990 and 1991 (no. = 16, 13 and 10, respectively). Although differences were noted in performance of progency from the four twins with the highest v. the four with the lowest IGF-1 concentrations, they were not large enough to recommend single-trait selection for blood serum IGF-1 in beef heifers.

引用

页码：315 / 320

页数：6

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