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A comparative study of the effects of long-term cold exposure, and cold resistance in Min Pigs and Large White Pigs

文献类型： 外文期刊

作者： Liu, Ziguang 1 ; Zhang, Dongjie 1 ; Wang, Wentao 1 ; He, Xinmiao 1 ; Peng, Fugang 1 ; Wang, Liang 1 ; Guo, Zhenhua 1 ; Fu 1 ;

作者机构： 1.Heilongjiang Acad Agr Sci, Key Lab Combine Planting & Feeding, Minist Agr Peoples Republ China, Harbin, Heilongjiang, Peoples R China

2.Heilongjiang Acad Agr Sci, Key Lab Combine Planting & Feeding, Minist Agr Peopl

关键词： Cold resistance; death rate; freezing rate; Min Pig; shivering frequency

期刊名称：ACTA AGRICULTURAE SCANDINAVICA SECTION A-ANIMAL SCIENCE （ 影响因子：0.684； ）

ISSN： 0906-4702

年卷期： 2017 年 67 卷 1-2 期

页码：

收录情况： SCI

摘要： Min Pig (Sus scrofa) is a northern Chinese domestic pig breed, whose cold resistance is remarkable. However, the cold-resistant phenotype of Min Pig is unclear. Our studies showed that in long-term cold exposure, the death rate of Min Pigs is significantly lower than that of the control Large White (LW) Pigs. The ear tissue freezing rate for Min Pigs is 0%, but that for LW Pigs is 100%. The shivering time and shivering frequency of Min Pigs are both significantly lower than that of LW Pigs at 5 months (P<.005) and in 80-90kg pigs (P<.001). Our results indicated that Min Pig is more cold resistant than LW Pig in long-term cold exposure. These findings provided important reference data for the field of cold resistance research in Min Pigs, and for the breeding of cold-resistant pigs.

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