A comparative study of the effects of long-term cold exposure, and cold resistance in Min Pigs and Large White Pigs. (3rd April 2017)

• Record Type: Journal Article
• Authors: Liu, Ziguang; Zhang, Dongjie; Wang, Wentao; He, Xinmiao; Peng, Fugang; Wang, Liang; Guo, Zhenhua; Fu, Bo; Wu, Saihui; Li, Zhongqiu; Sun, Jinyan; Chui, Ye; Liu, Di
• Is Part Of: Acta agriculturæ Scandinavica. Volume 67:Number 1/2(2017)
• Page Start: 34
• Page End: 39
• Publication Date: 2017-04-03
• Subjects: Cold resistance -- death rate -- freezing rate -- Min Pig -- shivering frequency; Animal culture -- Periodicals; Animal nutrition -- Periodicals; 636
• DOI: 10.1080/09064702.2018.1431306
• Languages: English
• ISSNs: 0906-4702

Abstract

ABSTRACT: 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 80–90 kg 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.