• Title/Summary/Keyword: Animal Husbandry

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Genetic parameter estimation for reproductive traits in QingYu pigs and comparison of carcass and meat quality traits to Berkshire×QingYu crossbred pigs

  • Luo, Jia;Yang, Yiting;Liao, Kun;Liu, Bin;Chen, Ying;Shen, Linyuan;Chen, Lei;Jiang, An'an;Liu, Yihui;Li, Qiang;Wang, Jinyong;Li, Xuewei;Zhang, Shunhua;Zhu, Li
    • Asian-Australasian Journal of Animal Sciences
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    • v.33 no.8
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    • pp.1224-1232
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    • 2020

  • Objective: The QingYu pig is well known for its excellent meat quality attributes in Sichuan province, China. In order to improve its production efficiency, the determination of genetic factors contributing to quantifiable economic traits of livestock is important. Moreover, the cross-breeding of QingYu pigs with western breeds possessing strong growth attributes is an efficient way to improve the performance of this breed. Methods: Here, the genetic parameters of several important reproductive traits of QingYu pigs were estimated, include total number born (TNB), number born alive, litter birth weight, individual birth weight, number of piglets weaned, litter weaning weight, and individual weaning weight. The data was analyzed using the ASReml 3.0 software (NSW Inc., Sydney, Australia). Furthermore, the effects of crossing Berkshire with QingYu (BQ) pigs on carcass and meat quality traits, as well as the effects of slaughter weight on carcass and meat quality of BQ were characterized. Results: QingYu pigs exhibited superior reproductive traits. The TNB available to QingYu pigs was more than 8 per parity. The observed repeatability of the reproductive traits of the QingYu pigs was between 0.10 and 0.23. The significantly correlated genetic and phenotypic of reproduction traits were consistent. Interestingly, the BQ pigs exhibited improved carcass quality, with a significant increase in loin muscle area, lean percentage and reduction in sebum percentage. As a result, BQ had higher L45min, lower cooking scores, and lower drip loss. In addition, the loin muscle area, body length, and sebum percentage were significantly higher in 90 and 100 kg animals. Cooking loss showed a significant increase at 80 kg, and marbling increased significantly from 90 kg. Conclusion: The results of this study suggest that QingYu pigs exhibit excellent reproductive properties and heritability of these traits. Crossing with Berkshire is an efficient strategy to improve the carcass and meat quality of QingYu pigs for commercial operations. Furthermore, it appears as though the optimal slaughter weight of BQ pigs is at approximately 90 kg.

  • https://doi.org/10.5713/ajas.19.0105 인용 PDF KSCI

Studies on the Hematology of Korea Native Cattle in the Kangwon Province (강원도지역 한우의 혈액상에 관한 연구)

  • Kim Jong-Ki;Chang Guk-Hyun;Kim Tae-Jong;Yoon Hwa-Joong
    • Journal of the korean veterinary medical association
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    • v.25 no.2
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    • pp.102-107
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    • 1989

  • The hemogram were examined from 90 healthy Korean native cattle(70 females and 20 males) in the area of Kangwon-Do The results obstained are summarized as follows: 1. There were shown the range and mean of the erythrocyte counte($6.01{\~}9.99{\times}

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