摘要
根据青海八眉猪(本)、长白(长)、大白(大)及其长×本、大×本和长×长×本杂交组合的繁殖性状记录,研究了3种杂交组合繁殖性状的杂种优势。结果表明:长×本、长×长×本杂交组合繁殖性状各指标均表现有杂种优势,尤其以长×本杂交组合的产仔数、产活仔数优势明显;以长×长×本杂交组合的断奶窝重、断奶重、20日龄窝重、20日龄重、初生窝重等性状优势明显;大×本杂交组合繁殖性状的杂种优势最低,部分性状不表现杂种优势。
Based on the reproductive performance of Qinghai Bamei, Landrace, Yorkshire, and as well as three hybrid combinations of Landrace × Bamei, Yorkshire × Bamei and Landrace × Bamei × Bamei, the heterosis rate of reproductive traits in three different hybrid combination was studied. The results showed that there was heterosis of reproductive traits in the combinations of Landrace × Bamei and Landrace × Landrace × Bamei and the combination of Landrace × Baimei showed significant heterosis in birth litter numth and live litter mumth. The Landrace × Landrace × Bamei showed significant heterosis in birth litter weight, 20 d litter weight, weaning litter weight while the Yorkshire × Barnei showed the lowest heterosis in some traits or no heterosis in some others traits.
出处
《青海大学学报（自然科学版）》
2008年第3期4-6,14,共4页
Journal of Qinghai University(Natural Science)
关键词
青海八眉猪
杂交组合
繁殖性状
杂种优势
Qinghai Bamei swine
hybrid combimation
reproductive performance
heterosis
