ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (4): 542-548.doi: 10.11843/j.issn.0366-6964.2015.04.005

Previous Articles     Next Articles

Association between AA-NAT mRNA Expression and Year-round Estrus in Sheep

LU Lu-lu1,SUN Xiao-di2,CHU Ming-xing1* ,WANG Yong-juan2,HUANG Dong-wei1,WANG Jin-yu2,DI Ran1,PAN Zhang-yuan1,LIU Qiu-yue1   

  1. (1.Key Laboratory of Farm Animal Genetic Resources and Germplasm Innovation of Ministry of Agriculture,Institute of Animal Science,Chinese Academy of Agricultural Sciences,Beijing 100193,China;2.College of Animal Science and Technology,Yangzhou University,Yangzhou 225009,China)
  • Received:2014-05-05 Online:2015-04-23 Published:2015-04-23

Abstract:

In order to study the association of AA-NAT gene and year-round estrus in sheep,year-round estrous Small Tail Han ewes and seasonal estrous Tan ewes were selected as tested subjects.Real-time PCR method was used to detect AA-NAT mRNA expression in hypothalamus,pituitary gland,pineal gland,ovary,uterus body and adrenal gland at different estrus stages.The results showed that the expression of AA-NAT gene in all 6 tissues at different estrous stages of the 2 breeds was significantly different.The expression of AA-NAT gene was at high level in ovary,uterus body and pineal gland in sheep at estrus.In ovary and uterus body, AA-NAT gene expression was significantly lower (P<0.01) in Small Tail Han sheep at spring and fall estrus stage than that in Tan sheep at fall estrus stage,but in pineal gland it was significantly higher (P<0.01).The results preminarily indicated that the up-regulated expression of AA-NAT gene in ovary,uterus body and pineal gland was associated with year-round estrus in Small Tail Han sheep.

CLC Number: