1Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R. China
2Xinjiang Key Laboratory of Grassland Resources and Ecology, College of Grassland and Environment Sciences,
Xinjiang Agricultural University, Urumqi 830052, P.R. China
Submission date: 2017-05-03
Final revision date: 2017-06-21
Acceptance date: 2017-06-21
Online publication date: 2017-12-27
Publication date: 2018-01-26
Pol. J. Environ. Stud. 2018;27(2):647–653