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Relationships between gilt development and herd production efficiency are revealed by simulation

Author

Listed:
  • Han Zhang

    (Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
    Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China)

  • Zhexi Liu

    (Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
    Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China)

  • Yijun Liu

    (Zhaohua District Agriculture and Rural Affairs Bureau of Guangyuan City, Guangyuan, P.R. China)

  • Depeng Wang

    (Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
    Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China)

  • Ji Wang

    (Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
    Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China)

  • Keliang Wu

    (Department of Animal Genetics and Breeding, National Engineering Laboratory for Animal Breeding, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China
    Key Laboratory of Animal Genetics, Breeding and Reproduction of the Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, P.R. China)

Abstract

The gilt development level is a critical factor for profitability in the pig industry. To evaluate the impact of different gilt development levels on the age structure and production efficiency of female herds we used the performance data of a pig farm that was simulated over a ten-year period, with current production statistics from the Chinese pig industry as a basis for the model. In a herd of 600 breeding sows, we compared age structure, number born alive (NBA), longevity and sow lifetime productivity in three scenarios with gilt culling rates of 10%, 20%, and 30%. The results show that the gilt development has no significant effects on the age structure. The gilt development had no significant effects either on sow reproductive performance or production efficiency. However, the annual replacement rate, longevity, and sow lifetime productivity varied significantly in the three levels of gilt development (P < 0.01). We conclude that the gilt development is closely related to herd turnover and reproductive performance, and ultimately affects the cost of pig production. Gilt development is, therefore, an extremely important factor in an integrated pig production system.

Suggested Citation

  • Han Zhang & Zhexi Liu & Yijun Liu & Depeng Wang & Ji Wang & Keliang Wu, 2023. "Relationships between gilt development and herd production efficiency are revealed by simulation," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 68(3), pages 122-128.
    • Handle: RePEc:caa:jnlcjs:v:68:y:2023:i:3:id:127-2022-cjas
    DOI: 10.17221/127/2022-CJAS
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    References listed on IDEAS

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    1. Xiao, Hongbo & Wang, Jimin & Oxley, Les & Ma, Hengyun, 2012. "The evolution of hog production and potential sources for future growth in China," Food Policy, Elsevier, vol. 37(4), pages 366-377.
    2. Willems, Jaap & van Grinsven, Hans J.M. & Jacobsen, Brian H. & Jensen, Tenna & Dalgaard, Tommy & Westhoek, Henk & Kristensen, Ib Sillebak, 2016. "Why Danish pig farms have far more land and pigs than Dutch farms? Implications for feed supply, manure recycling and production costs," Agricultural Systems, Elsevier, vol. 144(C), pages 122-132.
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