Anim Reprod, 3-14, January/June, 2007 The role of androgens in the control of spermatogenesis: lessons from transgenic models involving a Sertoli cell-selective knockout of the androgen receptor G. Verhoeven, E. Denolet, J.V. Swinnen, A. Willems, P.T.K. Saunders, R.M. Sharpe, K. De Gendt

Anim Reprod, 15-22, January/June, 2007 Sperm morphological attributes in indigenous male goats raised under extensive husbandry in Ethiopia Y. Mekasha, A. Tegegne, H. Rodriguez-Martinez

Anim Reprod, 23-30, January/June, 2007 Effect of dietary fat supplementation on reproductive performance of goats H.H. Titi and R. Awad

Anim Reprod, 31-37, January/June, 2007 Relationship among nitric oxide, progesterone and estradiol-17β concentrations in follicular fluid during follicular development in cattle R.F. Faes, M.C. Caldas-Bussiere, A.A.M. Rosa-e-Silva, J. Antunes-Rodrigues, J.C. Barbosa

Anim Reprod, 38-41, January/June, 2007 Seasonal variation in sexual performance of Awassi rams R.T. Kridli, A.Y. Abdullah, B.S. Obeidat, R.I. Qudsieh, H.H. Titi, M.S. Awawdeh

Anim Reprod, 42-45, January/June, 2007 The reproductive performance of beef cows of different ages with calves weaned at three or seven months C.S. Gottschall, E.T. Ferreira, L. Canellas, H.R. Bittencourt

Anim Reprod, 46-50, January/June, 2007 Endometrial membrane response in Mus musculus during implantation by Vitex negundo Linn A. Banerjee, R. Vaghasiya, N. Shrivastava, H. Padh, M. Nivsarkar

Anim Reprod, 51-58, January/June, 2007 Resistance of embryos from Bos indicus cattle during early stages of in vitro development to heat shock compared to embryos crossbred from crossbred cattle F.M. Monteiro, E.C. Freitas, D.S. Melo, L.M. Carvalho, A.B. Teixeira, L.A. Coelho, L.A. Trinca, C.M. Barros

Anim Reprod, 59-60, January/June, 2007 Instructions to authors

Anim Reprod, 61-61, January/June, 2007 Editorial Board and Journal Information