Improving management for higher reproduction accelerates genetic improvement in closed herd of swine

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The present study compared responses to selection at different conception rates and litter sizes at weaning in a simulated closed herd in a swine breeding program. The base population consisted of 10 males and 50 females, and 10 generations of selection was practiced by using individual phenotype or best linear unbiased prediction of breeding values for a trait with heritability (h2) of either 0.2 or 0.5. The probability of conception in a single mating was assumed to be 0.8, 0.9 or 1.0. Litter size at weaning was sampled randomly from a normal distribution with mean 8, 10 or 12 and variance 8.1225. Genetic response increased by approximately 6% for h2 = 0.2 and approximately 5% for h2 = 0.5 at generation 10 when conception rate was increased from 0.8 to 1.0. However, litter size at weaning did not affect response to selection. In conclusion, improving conception rate by environmental management increases genetic response indirectly in a breeding program of a closed swine herd.

本文言語English
ページ(範囲)499-502
ページ数4
ジャーナルAnimal Science Journal
75
6
DOI
出版ステータスPublished - 2004 12 1
外部発表はい

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

フィンガープリント 「Improving management for higher reproduction accelerates genetic improvement in closed herd of swine」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル