浙江农业学报2026，Vol.38Issue(8)：1529-1538,10.DOI:10.3969/j.issn.1004-1524.20250514
妊娠 110 d背膘卡尺评分及胎次对二元回交母猪繁殖性能的影响
Effects of backfat caliper score at 110 days of gestation and parity on reproductive perform-ance of backcross binary sows
摘要
Abstract
Production records of 1 072 backcross binary sows from a breeding farm in Guizhou Province were ana-lyzed using one-way ANOVA and correlation regression to evaluate the effects of backfat caliper score at day 110 of gestation and parities on reproductive performance of sows.The practical utility of the caliper scoring system in sow production management was further evaluated.The results showed that:1)Parity significantly(p<0.05)influenced the reproductive performance of backcross binary sows,with optimal performance observed in parities 1-4 and marked declines after parity 7.2)In primiparous sows,the group of caliper score≤17 demonstrated the highest to-tal number of born,number of born alive,and number of healthy born.This group also had significantly greater litter birth weight and weaning weight of piglets than the>22 group.Both the(17,20)and[20,22]groups exhibited significantly higher average piglet birth weight compared with the other groups.Additionally,their litter birth weight and piglet weaning weight were also significantly greater than those observed in the>22 group.For multiparous sows,the group of caliper score≤17 had the highest reproductive performance,followed by the(17,20)group.3)Extremely significantly(p<0.01)negative correlations were observed between backfat caliper scores and litter birth weight,birth weight,and weaning weight of the piglets in primiparous sows,with optimal reproductive performance achieved at scores of 19-21.Whereas,the number of born alive and litter birth weight of piglets were significantly negatively correlated with the caliper score of multiparous sows,and the scores were better at 18-20 points.In con-clusion,the reproductive performance of backcross binary sows is optimal during parities 1-4,and culling is recom-mended after parity7;the backfat caliper score for primiparous sows should be maintained within19-21,while that for multiparous sows should be kept at 18-20.关键词
胎次/卡尺评分/二元回交母猪/繁殖性能Key words
parity/caliper score/binary backcross sow/reproductive performance分类
农业科技引用本文复制引用
李晓霞,王钢锋,王大一,曹平华..妊娠 110 d背膘卡尺评分及胎次对二元回交母猪繁殖性能的影响[J].浙江农业学报,2026,38(8):1529-1538,10.基金项目
国家自然科学基金(31872354,32372933) （31872354,32372933）
河南省教育厅重点科研项目计划(24A230002) （24A230002）
