Search Results - "Parfet, J R"

Secretory patterns of LH and FSH during development and hypothalamic and hypophysial characteristics following development of steroid-induced ovarian follicular cysts in dairy cattle by Cook, D L, Parfet, J R, Smith, C A, Moss, G E, Youngquist, R S, Garverick, H A

“…Two experiments were conducted to (1) investigate developmental endocrinology of ovarian follicular cysts (cysts) in cattle and (2) evaluate effects of cysts…”
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Fate and turnover rate of ovarian follicular cysts in dairy cattle by Cook, D L, Smith, C A, Parfet, J R, Youngquist, R S, Brown, E M, Garverick, H A

“…Non-lactating, multiparous dairy cows diagnosed as having cysts by palpation per rectum were used. Cysts were induced with oestradiol-17β (15 mg) and…”
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Diagnosis of luteal and follicular ovarian cysts by palpation per rectum and linear-array ultrasonography in dairy cows by Farin, P W, Youngquist, R S, Parfet, J R, Garverick, H A

“…The purpose of this study was to determine and compare the accuracy of palpation per rectum and linear-array ultrasonography for diagnosing follicular vs…”
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Relationship of pre- and post-ovulatory gonadotropin concentrations to subnormal luteal function in postpartum beef cattle by Garverick, H.A, Parfet, J.R, Lee, C.N, Copelin, J.P, Youngquist, R.S, Smith, M.F

“…Early weaning of calves from anestrous cows results in formation of short-lived corpora lutea (CL) unless the animals are pretreated with a progestagen…”
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Pituitary concentrations of gonadotropins and receptors for GnRH in suckled beef cows at various intervals after calving by Moss, G.E, Parfet, J.R, Marvin, C.A, Allrich, R.D, Diekman, M.A

“…Mature beef cows were slaughtered at 5 (n = 6), 10 (n = 6), 20 (n = 6) or 30 (n = 5) d after calving to identify endocrine events that may affect the duration…”
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Induction of persistent ovarian follicular structures following administration of progesterone near the onset of estrus in dairy cattle by Lee, C N, Cook, D L, Parfet, J R, Smith, C A, Youngquist, R S, Garverick, H A

“…The objective of this study was to determine if progesterone administered near the onset of estrus in dairy cows would block the preovulatory surge of LH and…”
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Relationships among concentrations of four opioid neuropeptides and luteinizing hormone-releasing hormone in neural tissues of beef cows following early weaning by Malven, P.V, Parfet, J.R, Gregg, D.W, Allrich, R.D, Moss, G.E

“…Acute changes associated with removal of the inhibition of estrus caused by suckling were examined in beef cows. Calves were weaned during the fifth week after…”
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Anterior pituitary concentrations of gonadotropins, GnRH-receptors and ovarian characteristics following early weaning in beef cows by Parfet, J.R, Marvin, C.A, Allrich, R.D, Diekman, M.A, Moss, G.E

“…Endocrine changes in the hypophyseal-ovarian axis associated with early calf removal were investigated in anestrous beef cows. Tissues were collected and…”
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Pituitary responsiveness to GnRH [gonadotropin releasing hormone], hypothalamic content of GnRH and pituitary LH [luteinizing hormone] and FSH concentrations immediately preceding puberty in gilts by Trout, W.E, Diekman, M.A, Parfet, J.R, Moss, G.E

“…To determine whether pituitary concentrations of luteinizing hormone (LH), follicle-stimulating hormone (FSH) or hypothalamic content of gonadotropin releasing…”
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Effect of dietary energy, body condition and calf removal on pituitary gonadotropins, gonadotropin-releasing hormone (GnRH) and hypothalamic opioids in beef cows by Connor, H C, Houghton, P L, Lemenager, R P, Malven, P V, Parfet, J R, Moss, G E

“…Beef cows (n = 64) were slaughtered to evaluate effects of dietary energy and calf removal (CR) on hypothalamic and adenohypophysial endocrine characteristics…”
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Pituitary Concentrations of Gonadotropins and Receptors for GnRH in Suckled Beef Cows at Various Intervals after Calving2 by Moss, G. E., Parfet, J. R., Marvin, C. A., Allrich, R. D., Diekman, M. A.

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Concentrations of bioactive and immunoactive luteinizing hormone in bovine anterior pituitary tissue by Moss, G E, Lemenager, R P, Parfet, J R, Adams, B M, Adams, T E

“…Tissue concentrations of LH as determined by radioimmunoassay (RIA) may not accurately measure actual changes that could occur in biological activity of the…”
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Ovarian inhibition of peripheral plasma concentration of follicle stimulating hormone in prepuberal Holstein heifers by Zollers, Jr, W G, Forrest, D W, Campbell, W J, Parfet, J R, Smith, M F, Harms, P G, Garverick, H A

“…The objective of this study was to determine effects of age and castration on follicle stimulating hormone (FSH) secretion in prepuberal heifers. In experiment…”
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Anterior Pituitary Concentrations of Gonadotropins, GnRH-Receptors and Ovarian Characteristics Following Early Weaning in Beef Cows3 by Parfet, J. R., Marvin, C. A., Allrich, R. D., Diekman, M. A., Moss, G. E.

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Relationships among Concentrations of Four Opioid Neuropeptides and Luteinizing Hormone-Releasing Hormone in Neural Tissues of Beef Cows Following Early Weaning2 by Malven, P. V., Parfet, J. R., Gregg, D. W., Allrich, R. D., Moss, G. E.

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Pituitary Responsiveness to GnRH, Hypothalamic Content of GnRH and Pituitary LH and FSH Concentrations Immediately Preceding Puberty in Gilts2 by Trout, W. E., Diekman, M. A., Parfet, J. R., Moss, G. E.

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