Search Results - "Stanko, R.L"

Evaluation of tropical forage legumes ( Medicago sativa, Dolichos lablab, Leucaena leucocephala and Desmanthus bicornutus) for growing goats by Kanani, J., Lukefahr, S.D., Stanko, R.L.

“…A 56-day feeding trial was conducted to evaluate forage legumes ( Medicago sativa, Dolichos lablab, Leucaena leucocephala and Desmanthus bicornutus) as protein…”
Get full text

Plasma gossypol dynamics in white-tailed deer: Implications for whole cottonseed as a supplemental feed by Bullock, S.L., Hewitt, D.G., Stanko, R.L., Dowd, M.K., Rutledge, J., Draeger, D.A.

“…Whole cottonseed (WCS) is a potential supplemental feed for white-tailed deer ( Odocoileus virginianus) in rangeland conditions because of its high digestible…”
Get full text

Leptin and its role in the central regulation of reproduction in cattle by Williams, G.L, Amstalden, M, Garcia, M.R, Stanko, R.L, Nizielski, S.E, Morrison, C.D, Keisler, D.H

“…Leptin, a 16 kDa product of the adipose obese ( ob) gene, has been shown to contribute to the regulation of energy metabolism, feeding behavior, and…”
Get full text

Gonadotropin-releasing hormone secretion into third-ventricle cerebrospinal fluid of cattle: correspondence with the tonic and surge release of luteinizing hormone and its tonic inhibition by suckling and neuropeptide Y by Gazal, O.S. (Texas AandM University Agricultural Research Station, Beeville, TX.), Leshin, L.S, Stanko, R.L, Thomas, M.G, Keisler, D.H, Anderson, L.L, Williams, G.L

“…Objectives of the current studies were to characterize the pattern of GnRH secretion in the cerebrospinal fluid of the bovine third ventricle, determine its…”
Get full text

Pregnancy rates to fixed-time AI in Bos indicus-influenced beef cows using PGF2α with (Bee Synch I) or without (Bee Synch II) GnRH at the onset of the 5-day CO-Synch + CIDR protocol by Williams, G.L., Stanko, R.L.

“…Objectives were to 1) characterize fixed-time AI (FTAI) pregnancy rates using the 5-Day CO-Synch + CIDR protocol in mature, suckled Bos indicus-influenced beef…”
Get full text

Mechanisms regulating suckling-mediated anovulation in the cow by Williams, G.L., Gazal, O.S., Vega, G.A.Guzman, Stanko, R.L.

“…This review summarizes our current understanding of mechanisms through which the suckling calf attenuates gonadotropin secretion and extends the postpartum…”
Get full text

Ovarian follicular and luteal characteristics in Bos indicus-influenced beef cows using prostaglandin F2α with or without GnRH at the onset of the 5-day CO-Synch + controlled internal drug release (CIDR) protocol by Scarpa, J.O., O’Neil, M.M., Cardoso, R.C., Stanko, R.L, Williams, G.L.

“…A modification of the standard 5-day CO-Synch + CIDR procedure (5-day Bee Synch + CIDR; Bee Synch), developed for use in Bos indicus-influenced cows, utilizes…”
Get full text

Leptin Gene Expression, Circulating Leptin, and Luteinizing Hormone Pulsatility Are Acutely Responsive to Short-Term Fasting in Prepubertal Heifers: Relationships to Circulating Insulin and Insulin-Like Growth Factor I1 by Amstalden, M, Garcia, M. R, Williams, S. W, Stanko, R. L, Nizielski, S. E, Morrison, C. D, Keisler, D. H, Williams, G. L

“…In the present study, we tested the hypothesis that short-term fasting would reduce leptin gene expression, circulating leptin, and LH pulsatility in…”
Get full text

Oxytocin secretion by cells from bovine corpora lutea destined to be normal or short-lived by Gazal, O.S., Stanko, R.L., Bao, B., Williams, G.L.

“…The working hypothesis for this study was that oxytocin (OT) production is greater in bovine luteal cells destined to be short-lived compared with cells from…”
Get full text

Central Infusion of Recombinant Ovine Leptin Normalizes Plasma Insulin and Stimulates a Novel Hypersecretion of Luteinizing Hormone after Short-Term Fasting in Mature Beef Cows by AMSTALDEN, M, GARCIA, M. R, STANKO, R. L, NIZIELSKI, S. E, MORRISON, C. D, KEISLER, D. H, WILLIAMS, G. L

“…The present studies tested the hypotheses that short-term fasting would reduce leptin gene expression and circulating concentrations of leptin and insulin in…”
Get full text

Effects of acute fasting and age on leptin and peroxisome proliferator‐activated receptor gamma production relative to fat depot in immature and mature pigs by O'Gorman, C.W, Stanko, R.L, Keisler, D.H, Garcia, M.R

“…Leptin and peroxisome proliferator‐activated receptor gamma (PPARγ) are adipogenic proteins that are actively involved in metabolic homeostasis of fat…”
Get full text

Leptin Acts at the Bovine Adenohypophysis to Enhance Basal and Gonadotropin-Releasing Hormone-Mediated Release of Luteinizing Hormone: Differential Effects Are Dependent upon Nutritional History by AMSTALDEN, M, ZIEBA, D. A, EDWARDS, J. F, HARMS, P. G, WELSH, T. H, STANKO, R. L, WILLIAMS, G. L

“…Recombinant ovine leptin (oleptin) stimulates an acute increase in the secretion of LH in fasted, but not in normal-fed, cows through an augmentation of the…”
Get full text

Ovarian, hormonal, and reproductive events associated with synchronization of ovulation and timed appointment breeding of Bos indicus-influenced cattle using intravaginal progesterone, gonadotropin-releasing hormone, and prostaglandin F₂α by Saldarriaga, J.P, Cooper, D.A, Cartmill, J.A, Zuluaga, J.F, Stanko, R.L, Williams, G.L

“…The objectives of this study were to 1) compare cumulative pregnancy rates in a traditional management (TM) scheme with those using a synchronization of…”
Get full text

Evidence that lamprey GnRH-III does not release FSH selectively in cattle by Amstalden, M, Zieba, D A, Garcia, M R, Stanko, R L, Welsh, T H, Hansel, W H, Williams, G L

“…Experiments were performed to test the hypothesis that lamprey GnRH-III (lGnRH-III) selectively releases FSH. Primary cultures of bovine adenohypophyseal cells…”
Get full text

Physiological Regulation of Maternal Behavior in Heifers: Roles of Genital Stimulation, Intracerebral Oxytocin Release, and Ovarian Steroids by WILLIAMS, G. L, GAZAL, O. S, LESHIN, L. S, STANKO, R. L, ANDERSON, L. L

“…We tested the hypotheses that 1) epidural anesthesia at parturition would block both peripheral and central release of oxytocin and eliminate the development…”
Get full text

Leptin Acts at the Bovine Adenohypophysis to Enhance Basal and Gonadotropin-Releasing Hormone-Mediated Release of Luteinizing Hormone: Differential Effects Are Dependent upon Nutritional History1 by Amstalden, M, Zieba, D. A, Edwards, J. F, Harms, P. G, Welsh, T. H, Stanko, R. L, Williams, G. L

“…Recombinant ovine leptin (oleptin) stimulates an acute increase in the secretion of LH in fasted, but not in normal-fed, cows through an augmentation of the…”
Get full text

Physiological Regulation of Maternal Behavior in Heifers: Roles of Genital Stimulation, Intracerebral Oxytocin Release, and Ovarian Steroids1 by Williams, G. L, Gazal, O. S, Leshin, L. S, Stanko, R. L, Anderson, L. L

“…We tested the hypotheses that 1) epidural anesthesia at parturition would block both peripheral and central release of oxytocin and eliminate the development…”
Get full text

Central Infusion of Recombinant Ovine Leptin Normalizes Plasma Insulin and Stimulates a Novel Hypersecretion of Luteinizing Hormone after Short-Term Fasting in Mature Beef Cows1 by Amstalden, M, Garcia, M. R, Stanko, R. L, Nizielski, S. E, Morrison, C. D, Keisler, D. H, Williams, G. L

“…The present studies tested the hypotheses that short-term fasting would reduce leptin gene expression and circulating concentrations of leptin and insulin in…”
Get full text

Distribution and repeatability of anterior pituitary responses to GnRH and relationship of response classification to the postpartum anovulatory interval of beef cows by Fajersson, P, Stanko, R.L, Williams, G.L

“…Our objectives were to investigate the phenotypic variation in anterior pituitary responsiveness to GnRH (100 micrograms, i.v.) of beef cows between d 5 and 8…”
Get full text

Injection of neuropeptide Y into the third cerebroventricle differentially influences pituitary secretion of luteinizing hormone and growth hormone in ovariectomized cows by Thomas, M.G, Gazal, O.S, Williams, G.L, Stanko, R.L, Keisler, D.H

“…Hypothalamic neurons that control the luteinizing hormone (LH) and growth hormone (GH) axes are localized in regions that also express neuropeptide Y (NPY)…”
Get full text