摘要
对互助猪0—3世代继代选育资料分析结果表明:互助猪性成熟早,体成熟晚,头胎仔猪由于与母体争夺营养,生长发育慢,成活率低;采用头胎留种,猪群的选择强度降低;后备猪8月龄配种体重和产仔数从0世代的44.13±10.27kg和8.17±1.97头分别降为3世代的23.68±7.21kg,6.32±2.44头,影响了互助猪的选育工作。因而认为,互助猪不宜采用头胎留种的选种方法。
The data of 0—3 generation systematic breeding was analyzed in Huzhu pig. The results showed that: Sexual maturation is early, but body maturation is late in Huzhu pig. As a result of competing for nutrient with his mother, the growth and development of first-born is glow and survival rate is low. When the first-born used for breeding, the selection intensity of herd was reduced, the mating body weight at eight months of age and the first-born litter size of replacement gilt decreased from 44.13±10.27kg and 8.17±1.97 herds in 0 generation to 23.68±7.21kg and 6.32±2.44 herds in 3rd generation respectively. This seriously influenced on the systematic breeding effects in Huzhu pig. So the conclusion is that the first-born should not be used for breeding in systematic breeding in Huzhu pig.
出处
《青海畜牧兽医杂志》
1992年第5期10-11,共2页
Chinese Qinghai Journal of Animal and Veterinary Sciences
关键词
头胎留种
继代选育
互助猪
first-born used for breeding, systematic breeding, Huzhu pig
