胎次和配种方式对母猪产仔数的影响

Study on the Effects of Parity and Mating way on Litter Size in Pigs

本文研究了胎次和配种方式对母猪产仔数的影响。结果表明:1～2胎母猪的产仔数较低,分别平均为9.22头/胎和9.13头/胎;3～7胎龄的母猪产仔数最好,平均产仔数在10.20～10.98头/胎之间;从第8胎开始母猪的胎产仔数呈下降趋势。人工授精与自然交配对母猪受胎率、窝产仔数的影响差异均不显著。

In this article,the effects of parity and mating way on litter size were studied in pigs.Results showed that,the litter size of sows of 1st and 2nd parity were lower,which were 9.22 head/litter and 9.13 head/litter respectively.Sows of 3rd to 7th parity have better performance,the average litter size were between 10.20 head/litter and 10.98 head/litter.The litter size showed downtrend since 8 th parity.There were no significant difference in the sows between artificial insemination group and natural mating group.