ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (6): 965-973.doi: 10.11843/j.issn.0366-6964.2015.06.012

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The Study of Hypoxia Adaptive Differences of Yunnan Wujin and Yuedawu Pigs

LI Mei-quan,ZHANG Chun-yong,AN Qing-cong,PAN Hong-bin,CHEN Ke-lin,GUO Rong-fu*   

  1. (Key Laboratory of Animal Nutrition and Feed Science of Yunnan Province,Yunnan Agricultural University,Kunming 650201,China)
  • Received:2014-07-28 Online:2015-06-23 Published:2015-06-23

Abstract:

This study aimed to ascertain the differences of hypoxia adaptation between Yunnan plateau Wujin pig and Yuedawu pig.Blood samples of 30 Wujin pigs and 30 Yuedawu pigs were collected(Half male and female)on 60 days.The blood HGB,HCT,RBC,MCH,MCHC and oxygen saturation were determined.The gene expressions of HIF-1α ,VEGF and EPO were determined by real-time PCR in heart,liver,lung,kidney,jejunum,ileum,duodenum,skin,muscle,pancreas,testes and ovaries of Yuedawu and Wujin pigs(half male and female).The results showed that HGB and RBC of Wujin pigs was significant higher than that of Yuedawu pigs(P<0.01),and hematocrit (HCT) and MCH was lower than Yuedawu pigs.Oxygen saturation of Wujin pigs was higher than that of Yuedawu pigs,without significant differences(P>0.05).HIF-1α,VEGFEPO mRNA were detected in various tissues of Yuedawu and Wujin pigs.The gene expressions of HIF-1α,VEGF and EPO in most tissues of Yuedawu pigs were higher than that in Wujin pigs,and main expression tissues for HIF-1α and VEGF were liver,lungs and pancreas in 2 pig breeds,whereas EPO was mainly expressed in kidney and liver,the trends of HIF-1α,VEGF and EPO genes expression in 2 pig breeds is consistent.In 2 pig breeds,the hypoxia adaptation gene expressions of sows were significantly higher than that of boar.The HGB,RBC and oxygen saturation of Wujin pigs was significantly higher than that of Yuedawu pigs.Physiological characterization parameters of hypoxia adaptation of Wujin pig were significantly higher than Yuedawu pig.Hypoxia adaptation gene expression in most tissues of Yuedawu pig were higher than that in Wujin pig.But the mechanisms of hypoxia adaptation need to be researched in the further.

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