CollegeofAnimalScienceandTechnology;
NortheastAgriculturalUniversity;
HarbinHeilongjiang150030;
PRC;
CollegeofAnimalScienceandTechnology;
NortheastAgriculturalUniversity;
HarbinHeilongjiang150030;
PRC//NortheastChinaGeographyandAgo-ecosystemsResearchInstitute;
AS;
HarbinHeilongjiang150040;
PRC;