Increasing exogenous progesterone during synchronization of estrus decreases endogenous 17 beta-estradiol and increases conception in cows

The objectives of this study were to determine the effects of dose of exogenous progesterone (P4) prior to artificial insemination on concentrations of 17 beta-estradiol (E2) and on conception rates in bovine females. Heifers (n = 100) and cows (n = 100) received P4-releasing intravaginal devices (P...

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Veröffentlicht in:	Biology of reproduction 1993-08, Vol.49 (2), p.214-220
Hauptverfasser:	WEHRMAN, M. E, ROBERSON, M. S, CUPP, A. S, KOJIMA, F. N, STUMPF, T. T, WERTH, L. A, WOLFE, M. W, KITTOK, R. J, KINDER, J. E
Format:	Artikel
Sprache:	eng
Schlagworte:	Administration, Intravaginal Animals Biological and medical sciences Cattle - physiology Drug Implants Estradiol - blood Estrus - drug effects Estrus - physiology Female Fertilization - drug effects Fundamental and applied biological sciences. Psychology Hormone metabolism and regulation Luteal Phase - physiology Mammalian female genital system Progesterone - administration & dosage Progesterone - blood Progesterone - pharmacology Vertebrates: reproduction
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