Seasonal Variations of Reproductive Hormone Level in Year-round andSeasonal Estrus Sheep
HE Jian-ning，WANG Jin-xin，DI Ran，WANG Yao-wu，SUN Xiao-di，YANG Zhi-min，LIU Qiu-yue，ZHANG Xin-rong，REN De-xin，CUI Bao-guo，CAI Zhan-rong， CHU Ming-xing
ACTA VETERINARIA ET ZOOTECHNICA SINICA . 2013, (10): 1547 -1553 .  DOI: 10.11843/j.issn.0366-6964.2013.10.006