The Relationships of Oocyte Quality and Follicular Fluid Prolactin and Progesterone in Superovulated Beef Heifers with and without Norgestomet Implants
Limited application of in vitro fertilization and embryo transplant in the animal industry has been primarily due to biological rather than technical aspects. The successful collection of mature, fertilizable oocytes is a prime requirement for in vitro fertilization but the variability of oocytes that develop into viable embryos has restricted the usefulness of this tool. Increased concentrations of progesterone and prolactin in human follicular fluid have been reported to be associated with oocyte maturity and successful in vitro fertilization (Fishel et al., 1983; Laufer et al., 1984). The objectives of this study were to (1) relate follicular fluid prolactin and progesterone concentrations to oocyte quality in superovulated beef cattle and (2) document the changes in prolactin and progesterone in conjunction with oocyte quality throughout the ovulatory period in both superovulated animals and in superovulated animals with the ovulatory LH spike suppressed with progestin implants.
KeywordsLuteinizing Hormone Follicular Fluid Progesterone Concentration Oocyte Quality Prolactin Concentration
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- Wise T, Vernon MW, Maurer RR, 1986. Oxytocin, prostaglandins E and F, estradiol, progesterone, sodium and potassium in preovulatory ollicles either developed normally or stimulated by follicle stimulating hormone. Theriogenology 26: In PressGoogle Scholar