Induction of ovarian follicular wave emergence in wapiti (Cervus elaphus)

Theriogenology
Robert B McCorkellGregg P Adams

Abstract

Two experiments were done to test the effects of treatments designed to electively induce ovarian follicular wave emergence in wapiti for the purpose of group synchronization. In Experiment 1, hinds were assigned randomly to three groups and given saline im (controls; n=5), 5mg of estadiol-17beta im (n=4), or 5mg estradiol-17beta plus 100mg progesterone im (n=5). In Experiment 2, hinds were assigned randomly to two groups and given no treatment (controls; n=6), or transvaginal ultrasound-guided follicle ablation (n=7). In both experiments, ovarian follicular dynamics were monitored by daily transrectal ultrasonography from Day 0 (day of treatment) to Day 9. In Experiment 1, blood samples were collected at each examination for measurement of serum concentrations of progesterone and FSH. Both experiments were conducted during the late anestrous period (July and August). The mean (+/-S.E.M.) day of wave emergence did not differ between the control and estradiol alone groups, but tended to be later in the estradiol plus progesterone group Day 4.0+/-0.7, Day 3.5+/-0.3, and Day 5.2+/-0.2, respectively; P=0.06). The interval from treatment to wave emergence was less variable in the estradiol plus progesterone group (P<0.05) and tended...Continue Reading

References

Mar 1, 1991·Journal of Reproduction and Fertility·J C KoO J Ginther
Mar 1, 1989·Journal of Reproduction and Fertility·G W AsherD Duganzich
Sep 1, 1989·Journal of Reproduction and Fertility·O J GintherJ P Kastelic
Jun 1, 2000·Theriogenology·M I BaracaldoR J Mapletoft
Feb 24, 2001·Theriogenology·G M BrogliattiG P Adams
Jul 13, 2005·Theriogenology·Robert McCorkellGregg P Adams
Apr 1, 1991·Theriogenology·M C PieterseM A Taverne
Apr 15, 1996·Theriogenology·G M Brogliatti, G P Adams

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Citations

Mar 22, 2014·Reproductive Biology and Endocrinology : RB&E·Eveline S ZanettiJosé Maurício B Duarte
Jul 16, 2013·Animal Reproduction Science·J Manuel PalominoGregg P Adams
Oct 30, 2012·Theriogenology·Robert B McCorkellGregg P Adams
Nov 8, 2011·Zoo Biology·Eveline dos Santos Zanetti, José Maurício Barbanti Duarte
Apr 19, 2013·Reproduction, Fertility, and Development·J Manuel PalominoGregg P Adams
Mar 27, 2018·Theriogenology·G D A GastalE L Gastal

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