Effect of backfat thickness on body condition score and reproductive performance of sows during pregnancy

doi:10.3969/j.issn.1004-1524.2020.03.02

›› 2020, Vol. 32 ›› Issue (3): 390-397.DOI: 10.3969/j.issn.1004-1524.2020.03.02

• Animal Science • Previous Articles Next Articles

Effect of backfat thickness on body condition score and reproductive performance of sows during pregnancy

LIU Bin¹, CHEN Ying¹, JIANG Xiaobing², GUO Zhixian¹, HE Zhiping³, ZHONG Zhijun³, ZHANG Shunhua¹, ZHU Li^1,*

1.Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China;
2.Sichuan Meishan Wanjiahao Breeding Pig Breeding Co., Ltd., Meishan 620039, China;
3.Sichuan Academy of Animal Science, Chengdu 610066, China

Received:2019-06-06 Online:2020-03-25 Published:2020-04-03

Abstract

Abstract: Historical reproductive data of 2 552 Yorkshire sows were used to analyze the relationship between backfat thickness and body condition score and main reproductive traits and correlation analysis was carried out on the thickness and reproductive traits of primiparous sows and sows at different stages of pregnancy. The results showed that the body condition scoring method could not accurately judge the backfat thickness and reproductive performance of sows. There was no significant correlation between the backfat thickness and the main reproductive traits at different gestation stages of primiparous sows. The backfat thickness in different stages of multiparous sows was significantly (P<0.05) correlated with reproductive traits. The variation of backfat thickness during pregnancy was significantly (P<0.05) correlated with reproductive traits. According to the regression analysis, in order to optimize the reproductive performance of the sows, the backfat thickness of sows during pregnancy should be controlled within the range of 10-14 mm, and kept stable during gestation period. Precise feeding should be carried out according to the thickness of the sow's backfat at different stages of pregnancy to ensure that the sows could reach the optimal backfat thickness range and maintain relatively stable throughout the pregnancy, and it will be helpful to improve the reproductive performance of sows.

Key words: Yorkshire, pregnant sow, primiparous sows, multiparous sows, backfat thickness, body condition score, reproductive performance

CLC Number:

S828.4

LIU Bin, CHEN Ying, JIANG Xiaobing, GUO Zhixian, HE Zhiping, ZHONG Zhijun, ZHANG Shunhua, ZHU Li. Effect of backfat thickness on body condition score and reproductive performance of sows during pregnancy[J]. , 2020, 32(3): 390-397.

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Effect of backfat thickness on body condition score and reproductive performance of sows during pregnancy

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