Intensity of estrus following an estradiol-progesterone-based ovulation synchronization protocol influences fertility outcomes
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چکیده
منابع مشابه
Increasing Exogenous Progesterone during Synchronization of Estrus Decreases Endogenous 17Î2-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 17p-estradiol (E,) and on conception rates in bovine females. Heifers (n = 100) and cows (n = 100) received P4-releasing intravaginal devices (PRIDs) to produce two different circulating concentrations of P4. All animals received a single PRID 1...
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Induction of synchronized estrus and ovulation in prepuberal gilts is utilized in our laboratory to study factors influencing fertility and early embryonic development. Prepuberal females provide an inexpensive source of fertilized eggs, and they are not complicated by the presence of estrous cycles. Thus, estrus inducing treatments can be applied at any time. In the first of four experiments r...
متن کاملSynchronization of Estrus and Ovulation in Bovine Embryo Transfer Recipients
Traditional methods of estrus synchronization developed over the past 60 yr have involved controlling bovine estrous cycle length by administering a progestin and/or regressing the corpus luteum with luteolytic drugs. The synchrony of estrus and timing of ovulation following traditional estrus synchronization treatments has been too variable to allow the transfer of a fresh or frozen/thawed emb...
متن کاملEstrus synchronization in microminipig using estradiol dipropionate and prostaglandin F2α
The induction of pseudopregnancy by the exogenous administration of estradiol dipropionate (EDP) was investigated in cyclic Microminipigs (MMpigs) and the effects of exogenous administration of prostaglandin (PG) F2α on estrus exhibition were assessed in pseudopregnant MMpigs. In experiment 1, ovariectomized MMpigs were given a single intramuscular injection of 0.5, 1.5, or 2.5 mg of EDP. The e...
متن کاملIncreasing 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 (PRIDs) to produce two different circulating concentrations of P4. All animals received a single PR...
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ژورنال
عنوان ژورنال: Journal of Dairy Science
سال: 2019
ISSN: 0022-0302
DOI: 10.3168/jds.2018-15129