藏香猪母猪部分繁殖性能的测定

按照随机抽样和分组原则,采用逐头试情、跟踪观察和全群整窝分析方法,对引种到低海拔平原地区的39头母猪部分繁殖性能进行测定。结果表明,藏香猪母猪具有性成熟早,发情特征明显,发情周期短,产仔数少,护仔能力强等特性。其中成年母猪发情周期为(19.00±1.25)d,发情持续期2~3 d,妊娠期114 d,藏香猪的平均窝产仔数、产活仔数、初生窝质量分别为(5.92±1.71)头(、5.54±1.76)头和(4.61±1.67)kg;前3胎中第3胎产仔数最高,平均产仔间隔为161.24 d。初产藏香猪产仔数为(4.67±1.37)头,30 d断奶仔猪存活率为100%;经产藏香猪产仔数为(6.80±1.30)头,30 d断奶仔猪存活率为90%。

Study on Reproductive Performance of Zang Scent Pig

In order to exploit and scientifically utilize Zang Scent pig germplasm resource,39 samples of Zang Scent pig were randomly to measure their reproductive performance using the methods of teasing,follow-up and entire nest observations.The results showed that Zang Scent pigs had the character of earlier maturity,more obvious estrus,shorter estrous cycle and greater maternity than other pig breeds.In addition,the estrous cycle of adult female Zang Scent pig was(19.00±1.25) days;the estrous last 2-3 days.The gestation period of Zang Scent pig was 114 days.The average liter size,number born alive and newborn litter weight of Zang Scent pig were(5.92±1.71) piglets,(5.54±1.76) piglets and(4.61±1.67) kg,respectively.The third parity had the most litter size in the first three parities.The average farrowing interval was 161.24 d.The litter size of primiparous and multiparous sows was(4.67±1.37) and(6.80±1.30),respectively,and the livability of 30 days ablactation piglets is 100% and 90.00%,respectively.