5Bilinska B,Genissel C,Carreau S.Paracrine effect of seminiferous tubule factors on rat leydig cell testosterone production:role of cytoskeleton[J].Biol Cell.1997,89(7):435- 442.
5Kerblet,T.L.,Buhr, M,M.,Jordan,L.T.,et al. Relationshop between maternal plasma progesterone concentration and interferon-tausynthesis by the conceptus in cattle[J].Theriogenology,1996,47:703-714
6Chagase Silva J.Lopes da Costa L,Robalo Silva J.Plasma progesterone profiles and factors affecting embryo-fetal mortality following embryo transfer in dairy cattle[J].Theriogenology,2002,58:51-59
7Butler W.R.Nutritional interactions with reproductive performance in dairy cattle[J].Animal Reproduction Science ,2000,449-457
8Santos J.E.P.Thtcher W.W.,Chebel R.C.The effect of embryonic death retes in cattle on the efficacy of estrus synchronization programs[J].Anim Reprod Sci.2004,82-83:513-535
9Rocha A,Randel R.D.Broussard J.R.et al.,High environmental temperature and humidity decrease oocyte quality in Bos taurus but not in bos indicus cows[J].Theriogenology, 1989,49:657-665
10Santos J.E.P.,Thacher W.W.Chebel R.C.The effect of embryonic death rates in cattle on the efficacy of estrus synchronization programs[J].Anim Reprod Sci.2004,82-83:513-535
6Y. Tao,P. Nozi re,P. Grolier.Variations in Carotenoids. Fat Soluble micronutrients, and color in cows plasma and mi|k following changes in forage and feeding tevel[J].Journal of Dairy Science,2006,89(7):2634-2648.
7J. Guo, R.lk. Peters, R.A. Kohn.Effect of a transition diet on production performance and rnetabolism in periparturient dairy cows[J]. Journal of Dairy Science,2007,90(11):5247-5258.
8Weiss, W.P , J.S.Hogan, DA.Todhunter,et al. Effect ofvitam in E supplementation in diets with a low concentration of seleniumon mammary gland health of dairy cows[J].Dairy Sci,1997,80:1728- 1737.
9J.E.P.Santos, W.W. Thatcher, P,.C. Chebel.The effect of embryonic death rates in cattle on the efficacy of estrussynchronization programs[J]. Animal Reproduction Science, 2004,82:513-535.
10E J Schmitt, T Diaz, C M Barros, et al. Differential response of the luteal phase and fertility in cattle following ovulation of the first- wave follicle with human chorionic gonadotropin or an agonist of gonadotropin-releasing hormone[J]. ANIM SCI,1996, 74:1074- 1083.
