Genetic correlation analysis between the longevity and first parity reproduction traits of Large White sows

doi:10.3969/j.issn.1004-1524.2019.11.06

›› 2019, Vol. 31 ›› Issue (11): 1812-1818.DOI: 10.3969/j.issn.1004-1524.2019.11.06

• Animal Science • Previous Articles Next Articles

Genetic correlation analysis between the longevity and first parity reproduction traits of Large White sows

ZHAO Yunxiang^1,2, YANG Wenpan³, GAO Ning¹, PENG Xing³, ZHANG Conglin³, CHEN Yaosheng¹, LIU Xiaohong¹

1.College of Life Sciences, Sun Yat-sen University, Guangzhou 510475, China;
2.College of Life Science and Engineering,Foshan University, Foshan 528000, China;
3.Guangxi Yangxiang Agriculture and Husbandry Co., Ltd., Guigang 537100, China

Received:2019-04-05 Online:2019-11-25 Published:2019-12-04

Abstract

Abstract: To explore the genetic structure of traits related to the longevity of Large White sows and to achieve early selection, genetic correlation analysis was carried out on large white sow longevity and sow first parity reproduction traits. In this study, the reproductive traits of Large White pigs collected during the January 1998 to August 2014 in the South China Pig Genetic Evaluation Network of the National Pig Industry System were used. The DMU (V6) analysis was used to calculate the heritability and genetic correlations between the age at first farrowing, the total number born parity 1, the number born alive parity 1, the accumulated born alive to parity 3, the accumulated born alive to parity 5, the stayability to farrowing parity 3, the stayability to farrowing parity 5, the accumulated lifetime total number born, the number of piglets born alive during the life and the length of life. The results showed that the total number born parity 1, the number born alive parity 1, the accumulated lifetime total number born, the number of piglets born alive during the life and the length of life and the stayability to farrowing parity 5 of the Large White sows ranged from 0.132 to 0.198 and belong to low heritability traits; the accumulated born alive to parity 3, the accumulated born alive to parity 5, the stayability to farrowing parity 3 ranged from 0.230 to 0.271, which were moderate heritability traits; the age at first farrowing and the length of life heritability is between 0.492 and 0.642, which is a high heritability trait. Large White sows have a stronger the total number born parity 1, the number born alive parity 1, the accumulated born alive to parity 3, the accumulated born alive to parity 5, the accumulated lifetime total number born and the number of piglets born alive during the life. The positive phenotype correlation is genetically related and has a weak positive phenotype correlation with the length of life and is genetically related, and has a weak positive phenotype correlation with the stayability to farrowing parity 3, the stayability to farrowing parity 5 and is genetically related. There was a negative genetic correlation between the age at first farrowing of the sow and the number of piglets born alive during the life, and the age at first farrowing and the length of life were strongly positively related. It is possible to better use the traits related to the age of the sow by estimating the genetic parameters of the sow longevity, and to carry out early seed selection from the genetic correlation analysis between the traits related longevity of the sow and other traits.

Key words: Large White sows, longevity, first parity reproduction traits, heritability, genetic correlation

CLC Number:

S852.6

ZHAO Yunxiang, YANG Wenpan, GAO Ning, PENG Xing, ZHANG Conglin, CHEN Yaosheng, LIU Xiaohong. Genetic correlation analysis between the longevity and first parity reproduction traits of Large White sows[J]. , 2019, 31(11): 1812-1818.

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Genetic correlation analysis between the longevity and first parity reproduction traits of Large White sows

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