广东小耳花猪初配日龄对初产母猪繁殖性能的影响

Effects of the First-mating Day on the Farrowing Performance of Guangdong Small Ear Spotted Pig

为研究广东小耳花猪后备母猪初配日龄对第1胎产仔性能的影响,试验对某企业2017—2018年纯繁母猪群体的繁殖数据进行汇总分析,结果表明270～329日龄配种头数占比最大,达到69.67%;其中270～299日龄配种的头数占比40.16%,平均配种日龄284.77 d,返情1次的比例为3.06%,平均总产仔数为10.89头;300～329日龄配种的头数占比29.51%,平均配种日龄313.31 d,返情1次的比例为8.33%,平均总产仔数11.14头;330～359日龄配种的头数占比15.98%,返情1次的比例为28.21%,平均总产仔数11.49头。综合考虑产仔性能、返情及哺乳带仔情况,建议在广东小耳花猪的饲养管理中,选择270～329日龄内的健康后备母猪进行初次配种。

To study the effect of the initial age of the gilts of Guangdong Small Ear Spotted pigs on the performance of the first litter, this experiment analyzed the reproductive data of a purely sow herd in the company from 2017 to 2018. The results showed that the number of mating from 270 days to 329 days was the largest, accounting for 69.67%;among them, the proportion of 270-299 day old mating was 40.16%, the average mating age was 284.77 days, the proportion of repeating estrus was 3.06%, and the average total litter size was 10.89 heads;the proportion of 300-329 days old mating was 29.51%, the average mating age was 313.31 days, the proportion of repeating estrus was 8.33%, and the average total litter size was 11.14 heads;the proportion of330-359 day old breeding was 15.98%, the proportion of repeating oestrus was 28.21%, and the average total litter size was 11.49. Considering the performance of litter and returning to the situation, it is recommended to select the healthy gilts from 270 days to 329 days for the first mating-age in the feeding management of Guangdong Small Ear Spotted pigs.