Search Results - "Bergfelt, DR"

Combining reproductive endocrinology and ROC analysis to identify changes with sex, age, and pregnancy status in botos Inia geoffrensis by Robeck, TR, Amaral, RS, Steinman, KJ, Blum, JL, Martin, AR, Montano, GA, Bergfelt, DR, da Silva, VMF

“…Reproductive hormone profiles were described against physical characteristics during growth and development in male and female botos (Amazon River dolphins…”
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Role of oestradiol in growth of follicles and follicle deviation in heifers by Beg, MA, Meira, C, Bergfelt, DR, Ginther, OJ

“…Follicle deviation is characterized by continued growth of the largest (developing dominant) follicle and reduced growth of the smaller (subordinate)…”
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Role of low circulating FSH concentrations in controlling the interval to emergence of the subsequent follicular wave in cattle by Ginther, OJ, Bergfelt, DR, Beg, MA, Kot, K

“…The intervals between emergence of follicular waves 1 (first wave of an oestrous cycle) and 2, and between the associated FSH surges (surges 1 and 2), were…”
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Evaluation of the ToxRTool’s ability to rate the reliability of toxicological data for human health hazard assessments by Segal, D., Makris, S.L., Kraft, A.D., Bale, A.S., Fox, J., Gilbert, M., Bergfelt, D.R., Raffaele, K.C., Blain, R.B., Fedak, K.M., Selgrade, M.K., Crofton, K.M.

“…•We used ToxRTool to assess toxicology studies for use in health assessments.•The highest quality studies had the most consistent ratings from the…”
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Effect of LH on circulating oestradiol and follicular fluid factor concentrations during follicle deviation in cattle by Ginther, OJ, Bergfelt, DR, Beg, MA, Kot, K

“…Progesterone was used to reduce LH concentrations starting at the time when the largest follicle was > or = 5.7 mm in diameter or well before the expected…”
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Hormonal mechanism of follicle deviation as indicated by major versus minor follicular waves during the transition into the anovulatory season in mares by Ginther, OJ, Woods, BG, Meira, C, Beg, MA, Bergfelt, DR

“…Follicle growth and circulating hormone concentrations were compared between an interovulatory interval and the first 60 days of the anovulatory season in pony…”
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Follicle Selection in Monovular Species by GINTHER, O. J, BEG, M. A, BERGFELT, D. R, DONADEU, F. X, KOT, K

“…Follicle deviation is proposed to be the eminent event in follicle selection in monovular species. At deviation, the largest follicle establishes dominance…”
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Comparative Study of the Dynamics of Follicular Waves in Mares and Women by GINTHER, O. J, GASTAL, E. L, GASTAL, M. O, BERGFELT, D. R, BAERWALD, A. R, PIERSON, R. A

“…Deviation in growth rates of the follicles of the ovulatory wave begins at the end of a common growth phase and is characterized by continued growth of the…”
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Mechanism of follicle deviation in monovular farm species by Ginther, O.J., Beg, M.A., Donadeu, F.X., Bergfelt, D.R.

“…Diameter deviation is a distinctive change in growth rates among the follicles of a wave, heralding the formation of a dominant follicle and subordinate…”
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Morphological characterization of follicle deviation in Nelore ( Bos indicus) heifers and cows by Sartorelli, Evandro S., Carvalho, Luciano M., Bergfelt, D.R., Ginther, O.J., Barros, Ciro M.

“…Follicle diameter deviation is defined as the beginning of the differential change in growth rates between the largest and next largest follicles subsequent to…”
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In vivo effects of an intrafollicular injection of insulin-like growth factor 1 on the mechanism of follicle deviation in heifers and mares by GINTHER, O. J, BERGFELT, D. R, BEG, M. A, MEIRA, C, KOT, K

“…In cattle and mares, free insulin-like growth factor 1 (IGF-1) is higher in the future dominant follicle (F1) than in the future largest subordinate follicle…”
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Follicle Selection in Cattle: Dynamics of Follicular Fluid Factors During Development of Follicle Dominance by BEG, M. A, BERGFELT, D. R, KOT, K, GINTHER, O. J

“…Follicle diameter deviation during follicular waves in cattle begins with a reduction in growth rates of developing subordinate follicles, in contrast to the…”
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Follicular-Fluid Factors and Granulosa-Cell Gene Expression Associated with Follicle Deviation in Cattle by BEG, M. A, BERGFELT, D. R, KOT, K, WILTBANK, M. C, GINTHER, O. J

“…Intrafollicular changes in the largest follicle (F1) and second-largest (F2) follicle were examined in relation to follicle diameter deviation. Deviation is…”
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Follicle Selection in Cattle: Follicle Deviation and Codominance Within Sequential Waves by KULICK, L. J, BERGFELT, D. R, KOT, K, GINTHER, O. J

“…Follicle deviation during bovine follicular waves is characterized by continued growth of a developing dominant follicle and reduction or cessation of growth…”
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Follicle Selection in Cattle: Role of Luteinizing Hormone by GINTHER, O. J, BERGFELT, D. R, BEG, M. A, KOT, K

“…The circulating concentrations of LH were reduced by administration of 50 mg of progesterone every 8 h for 72 h, beginning when the largest follicle was 6.0 mm…”
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Validation of a homologous canine relaxin radioimmunoassay and application with pregnant and non-pregnant Northern fur seals ( Callorhinus ursinus ) by Bergfelt, Don R, Steinetz, Bernard G, Dunn, J. Lawrence, Atkinson, Shannon, Testa, J. Ward, Adams, Gregg P

“…Abstract The primary objectives of this study were to validate a canine relaxin RIA for use in otariids and phocids and consider practical applications. For 6…”
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Selection of the Dominant Follicle in Cattle: Role of Estradiol by GINTHER, O. J, BERGFELT, D. R, KULICK, L. J, KOT, K

“…Involvement of estradiol in the deviation in growth rates between the two largest follicles of a wave was studied in 39 heifers. In experiment 1, the largest…”
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Selection of the dominant follicle in cattle: role of two-way functional coupling between follicle-stimulating hormone and the follicles by Ginther, O.J, Bergfelt, D.R, Kulick, L.J, Kot, K

“…The functional coupling between the declining portion of the FSH surge and the growing follicles of a wave was studied by treating heifers with a minimal dose…”
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Effect of LH or GnRH on the dominant follicle of the first follicular wave in beef heifers by Martinez, M.F, Adams, G.P, Bergfelt, D.R, Kastelic, J.P, Mapletoft, R.J

“…A study was designed to characterise ovarian follicular dynamics in heifers treated with porcine luteinizing hormone (pLH) or gonadotropin releasing hormone…”
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Follicle Selection in Cattle: Relationships among Growth Rate, Diameter Ranking, and Capacity for Dominance by GINTHER, O. J, BERGFELT, D. R, BEG, M. A, KOT, K

“…Follicles of wave 1 were designated F1, F2, and so forth, according to descending diameter at the expected (F1, ≥8.2 mm) or observed beginning of deviation…”
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