摘要
本研究通过整理甘肃省某猪产业标准化示范种猪场(可繁殖母猪1200头)297头长大二元母猪的繁殖记录,主要研究了长大二元母猪不同胎次与断奶配种间隔,配种分娩率,产仔数和产仔重的关系。分析结果表明长大二元母猪不同胎次对断奶配种间隔有显著影响,且断奶配种间隔随胎次呈现规律性变化,其中第2和3胎的断奶配种间隔最长平均为7.35 d和7.36 d,其他胎次都在5 d左右变化。配种分娩率第1胎和第6胎最低(80和77.27),而第2、3、4、5胎和6胎以上分娩率都在96以上。长大二元母猪初生重第4胎窝均重最大(17.47 kg/窝),在第1胎最小(14.30 kg/窝),在第2、3、4、5胎窝均重都较高。由这些结果得出长大二元母猪的理想繁殖胎次应在第2~5胎。
In this study,the reproductive records of 297(Landrace×Yorkshire)pigs(1200 fertile sows)on a standardized demonstration pig farm in Gansu province were collected to study the relationship between different parity and weaning mating interval,mating delivery rate,litter size and litter weight of full-length binary sows.The results showed that different parities had a significant effect on the weaning mating interval,and the weaning mating interval showed regular changes with parities.The longest interbreeding interval of the second and third parities was 7.35 d and 7.36 d on average,and the other parities all changed about 5 d.The rate of mating births was the lowest at the first and sixth births(80 per cent and 77.27 per cent),while the rate at the second,third,fourth,fifth and sixth births was above 96 per cent.The average litter weight of(Landrace×Yorkshire)pigs at birth was the highest in the fourth litter(17.47 kg/litter)and the lowest in the first litter(14.30 kg/litter),and the average litter weight of(Landrace×Yorkshire)pigs at birth was higher in the second,third,fourth and fifth litter.According to these results,the ideal reproductive parities of(Landrace×Yorkshire)pigs should be in the 2nd to 5th parities.
作者
王芳彬
路强
WANG Fang-bin;LU Qiang(Gansu Husbandry Technology Extension Station, Lanzhou Gansu 730030, China;Lanzhou Zhengda Co., LTD.)
出处
《畜牧兽医杂志》
2022年第2期12-14,共3页
Journal of Animal Science and Veterinary Medicine
关键词
长大二元母猪
胎次
繁殖性能
hybrid of Landrace and Yorkshire
parity
reproductive performance
