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CLC number: Q321.6, Q492.6, S813.22

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Received: 2001-06-06

Revision Accepted: 2001-09-21

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Journal of Zhejiang University SCIENCE A 2002 Vol.3 No.3 P.367-370

http://doi.org/10.1631/jzus.2002.0367


Crossbreeding parameters for fertility traits in a rotational crossbreeding between Landrace and Piétrain pigs


Author(s):  CHEN Hai-yan, FU Yan, NIU Dong, RUAN Hui

Affiliation(s):  Animal Science College, Zhejiang University, Hangzhou 310029, China; more

Corresponding email(s):   fuyan@sun.zju.edu.cn

Key Words:  Landrace pig, Pié, train pig, Crossbreeding parameter, Fertility traits


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CHEN Hai-yan, FU Yan, NIU Dong, RUAN Hui. Crossbreeding parameters for fertility traits in a rotational crossbreeding between Landrace and Piétrain pigs[J]. Journal of Zhejiang University Science A, 2002, 3(3): 367-370.

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Abstract: 
The reproduction characteristics of 343 sows in six different breeding groups were analyzed to estimate the crossbreeding parameters. The results indicated that the ovulation rate and the weights of uterus and ovary are mainly determined by the additive genetic effects while the nonadditive genetic effects play an important role in embryonal traits and litter performance. The heterosis effects in the first litter are larger than those in the second litter because of heterosis x environment interaction. The results also showed the existence of a highly significant maternal heterosis effect on the fertility traits of sows.

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Reference

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[6] Fu, Y., 1998. Methodological improvement in estimation of crossbreeding parameters. In: Advanced Topics in Biomathematics, World Scientific, Singapore, 47-52.

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