1GORBMAN A,SOWER S A. Evolution of the role of GnRH in animal biology[J]. Gen Comp Endoc final, 2003 ( 134 ) : 207 -213.
2DUBOIS E A, ZANDBERGEN M A, PEUTE J, et al. Evolutionary de velopment of three GntkH systems in vertebrates [J]. Brain Research Bulletin ,2002,57(3) :413-418.
8DUDAS B ,MIHALY A,MERCHENTHALER. I ,et al. Topography and associations ofluteinizing hormone releasing hormone and neuropeptide Y immunoreac five neuronal systems in the human dienc ephalons[J]. Comp Neurol, 2000,427 ( 4 ) : 593-603.
10HUANG W Q, YAO B, SUN L, et al. Lmmunohistochemical and insim hybridization studies of GnRH and its receptor[J]. Life Science, 2001,68 (15) : 1727-1731.
9Cesare D D, Fimia G M, Brancorsini S, et al. Transcriptional control in male germ cells:general fator TF II A paretieipates in CREM-dependent gene activation [ J]. Mol Endocrinol, 2005,17 (8) :2554-2565.
10Gregory K E, Echternkamp S E,Dickerson G E,et al. Twinning in cattle :I. Foundation animals and genetic and environment effects on twinning rate[J]. J Anita Sci ,1990 ,68(7) : 1867-1876.