Development and application of an efficient genomic mating method to maximize the production performances of three-way crossbred pigs

Author:

Tang Zhenshuang1,Yin Lilin12,Yin Dong1,Zhang Haohao3,Fu Yuhua12,Zhou Guangliang1,Zhao Yunxiang4,Wang Zhiquan5,Liu Xiaolei126ORCID,Li Xinyun12,Zhao Shuhong126

Affiliation:

1. Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Key Laboratory of Swine Genetics and Breeding, Ministry of Agriculture, College of Animal Science and Technology, Huazhong Agricultural University , Wuhan 430070 , PR China

2. Frontiers Science Center for Animal Breeding and Sustainable Production , Wuhan 430070 , PR China

3. School of Computer Science and Technology, Wuhan University of Technology , Wuhan 430070 , PR China

4. School of Life Sciences and Engineering, Foshan University , Foshan 528225 , PR China

5. Wuhan Yingzi Gene Technology Co. LTD , Wuhan 430070 , PR China

6. Hubei Hongshan Laboratory , Wuhan 430070 , PR China

Abstract

Abstract Creating synthetic lines is the standard mating mode for commercial pig production. Traditional mating performance was evaluated through a strictly designed cross-combination test at the ‘breed level’ to maximize the benefits of production. The Duroc–Landrace–Yorkshire (DLY) three-way crossbred production system became the most widely used breeding scheme for pigs. Here, we proposed an ‘individual level’ genomic mating procedure that can be applied to commercial pig production with efficient algorithms for estimating marker effects and for allocating the appropriate boar-sow pairs, which can be freely accessed to public in our developed HIBLUP software at https://www.hiblup.com/tutorials#genomic-mating. A total of 875 Duroc boars, 350 Landrace–Yorkshire sows and 3573 DLY pigs were used to carry out the genomic mating to assess the production benefits theoretically. The results showed that genomic mating significantly improved the performances of progeny across different traits compared with random mating, such as the feed conversion rate, days from 30 to 120 kg and eye muscle area could be improved by −0.12, −4.64 d and 2.65 cm2, respectively, which were consistent with the real experimental validations. Overall, our findings indicated that genomic mating is an effective strategy to improve the performances of progeny by maximizing their total genetic merit with consideration of both additive and dominant effects. Also, a herd of boars from a richer genetic source will increase the effectiveness of genomic mating further.

Funder

National Natural Science Foundation of China

Key Project of Natural Science Foundation of Hubei Province

China Agriculture Research System of MOF and MARA

Publisher

Oxford University Press (OUP)

Subject

Molecular Biology,Information Systems

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