References
- Chow , L. A. , Thatches , W. W. , Chenault , J. C. , Kalva , P. S. and Wilcox , C. J. 1972 . Effects of MGA on bovine plasma ovarian steroids . J. Anim. Sci. (64th Annu. Mtg.) , 35 : 239 (Abstr.)
- Dobson , H. , Boyd , L. J. and Exley , D. 1973 . Circulating estrogens and progesterone in the bovine after synchronization with MGA . J. Reprod. Fertil. , 33 : 231 – 237 .
- Echtemkamp , S. E. and Hansel , W. 1973 . Concurrent changes in bovine plasma hormone levels prior to and during the first postpartum estrous cycle . J. Anim. Sci. , 27 : 1362 – 1370 .
- Edquist , L. E. , Ekman , L. , Gustafsson , B. and Johansson , E. D. B. 1973 . Peripheral plasma levels of oestrogens and progesterone during late bovine pregnancy . Acta Endocrinol. , 73 : 81 – 88 .
- Guthrie , H. D. , Henricks , D. M. and Hanklin , D. L. 1972 . Plasma estrogen, progesterone and luteinizing hormone prior to estrus and during early pregnancy in pigs . Endocrinology , 91 : 675 – 679 .
- Guthrie , H. D. , Henricks , D. M. and Handlin , D. L. 1975 . Plasma hormone levels and fertility in pigs induced to superovulate with PMSG . J. Reprod. Fertil. , 41 : 361 – 370 .
- Henricks , D. M. , Dickey , J. F. and Hill , J. R. 1971 . Plasma estrogen and progesterone levels in cows prior to and during estrus . Endocrinology , 89 : 1350 – 1355 .
- Henricks , D. M. , Dickey , J. F. , Hill , J. R. and Johnson , W. A. 1972 . Plasma estrogen and progesterone levels after mating and during late pregnancy and postpartum in cows . Endocrinology , 90 : 1336 – 1341 .
- Henricks , D. M. , Hill , J. R. and Dickey , J. F. 1973 . Plasma hormone levels and fertility in beef heifers treated with melengestrol acetate (MGA) . J. Anim. Sci. , 37 : 1169 – 1175 .
- Henricks , D. M. , Hill , J. R. , Dickey , J. F. and Lamond , D. R. 1973b . Plasma hormone levels in beef heifers with induced multiple ovulations . J. Reprod. Fertil. , 35 : 225 – 233 .
- Henricks , D. M. , Long , J. T. , Hill , J. R. and Dickey , J. F. 1974 . The effect of prostaglandin F2α during various stages of the estrous cycle of beef heifers . J. Reprod. Fertil. , 41 : 113 – 120 .
- Henricks , D. M. , Dickey , J. F. , Long , J. T. and Hill , J. R. 1975 . Effects of PMS and PGF2α on gonadal hormones and reproduction in the beef heifer . J. Reprod. Fertil. , 35 : 225 – 233 .
- Wettemann , R. P. and Hafs , H. D. 1972 . Gonadal and pituitary hormone after insemination . J. Anim. Sci. (65th Annu. Mtg.) , 35 : 257 (Abstr.)
- Wettemann , R. P. , Hafs , H. D. , Edgerton , L. A. and Swanson , L. V. 1972 . Estradiol and progesterone in blood serum during the bovine estrous cycle . J. Anim. Sci. , 34 : 1020 – 1024 .