selected publications academic article Maia, T. S., Guimares, H. R., Garza, V., Pohler, K. G., Cardoso, R. C., & Williams, G. L. (2022). Early juvenile but not mid-to-late prenatal nutrition controls puberty in heifers but neither impact adult reproductive function. Biology of Reproduction. 107(4), 1035-1045. Reese, S. T., Franco, G. A., Schubach, K. M., Brandao, A. P., West, S. M., Cooke, R. F., ... Pohler, K. G. (2021). Induced prostaglandin release alters steroid concentrations but not pregnancy survival in cows. Domestic Animal Endocrinology. 74, 106514-106514. Williams, G., & Cardoso, R. (2020). Foreword. Domestic Animal Endocrinology. 73, 106539-106539. Williams, G. L., & Stanko, R. L. (2020). Pregnancy rates to fixed-time AI in Bos indicus-influenced beef cows using PGF2 with (Bee Synch I) or without (Bee Synch II) GnRH at the onset of the 5-day CO-Synch+ CIDR protocol. THERIOGENOLOGY. 142, 229-235. Stewart, J. L., Stella, S., Cunha, L. L., Dias, N. W., Canisso, I. F., Mercadante, V., ... Lima, F. S. (2020). Administration of nerve growth factor- to heifers with a pre-ovulatory follicle enhanced luteal formation and function and promoted LH release. THERIOGENOLOGY. 148, 37-47. Maia, T. S., Guimaraes, H. R., Franco, G. A., Pohler, K. G., Cardoso, R. C., & Williams, G. L. (2020). Do pre and postnatal nutrition interact to program reproductive phenotype in sexually mature heifers?. Journal of Animal Science. 98(Supplement_4), 120-120. West, S. M., O'Neil, M. M., Maia, T. S., Fahey, S. H., Williams, G. L., & Cardoso, R. C. (2020). Effects of Prenatal and Postnatal Nutrition on the Concentration of Neuropeptide Y in the Third Ventricle Cerebrospinal Fluid in Beef Heifers. Journal of Animal Science. 98(Supplement_4), 379-379. Cardoso, R. C., West, S. M., Maia, T. S., Alves, B., & Williams, G. L. (2020). Nutritional control of puberty in the bovine female: prenatal and early postnatal regulation of the neuroendocrine system. Domestic Animal Endocrinology. 73, 106434-106434. O'Neil, M. M., Korthanke, C. M., Scarpa, J. O., Welsh, T. H., Cardoso, R. C., & Williams, G. L. (2019). Differential Regulation of Gonadotropins in Response to Continuous Infusion of Native Gonadotropin-Releasing Hormone in the Winter Anovulatory Mare and Effects of Treatment With Estradiol-17. Journal of Equine Veterinary Science. 75, 93-103. Scarpa, J. O., O'Neil, M. M., Cardoso, R. C., Stanko, R. L., & Williams, G. L. (2019). Ovarian follicular and luteal characteristics in Bos indicus-influenced beef cows using prostaglandin F2 with or without GnRH at the onset of the 5-day CO-Synch + controlled internal drug release (CIDR) protocol. Animal Reproduction Science. 204, 1-9. Bedenbaugh, M. N., D'Oliveira, M., Cardoso, R. C., Hileman, S. M., Williams, G. L., & Amstalden, M. (2018). Pubertal Escape From Estradiol Negative Feedback in Ewe Lambs Is Not Accounted for by Decreased ESR1 mRNA or Protein in Kisspeptin Neurons. ENDOCRINOLOGY. 159(1), 426-438. Allen, C. C., Tedeschi, L. O., Keisler, D. H., Cardoso, R. C., Alves, B., Amstalden, M., & Williams, G. L. (2017). Interaction of dietary energy source and body weight gain during the juvenile period on metabolic endocrine status and age at puberty in beef heifers. Journal of Animal Science. 95(5), 2080-2088. Korthanke, C. M., Thorson, J. F., Prezotto, L. D., Welsh, T., Cardoso, R. C., & Williams, G. L. (2017). Secretion of Gonadotropins in Response to a Novel Kiss-1 Receptor Agonist, RF9 in the Mare: Modulation by Estradiol-17 beta and Half-Life of RF9 in the Peripheral Circulation. Journal of Equine Veterinary Science. 57, 100-106. Alves, B., Cardoso, R. C., Doan, R., Zhang, Y., Dindot, S. V., Williams, G. L., & Amstalden, M. (2017). Nutritional programming of accelerated puberty in heifers: alterations in DNA methylation in the arcuate nucleus. Biology of Reproduction. 96(1), 174-184. Cardoso, R. C., Alves, B., Sharpton, S. M., Williams, G. L., & Amstalden, M. (2015). Nutritional Programming of Accelerated Puberty in Heifers: Involvement of Pro-Opiomelanocortin Neurones in the Arcuate Nucleus. Journal of Neuroendocrinology. 27(8), 647-657. Alves, B., Cardoso, R. C., Prezotto, L. D., Thorson, J. F., Bedenbaugh, M., Sharpton, S. M., ... Amstalden, M. (2015). Elevated body weight gain during the juvenile period alters neuropeptide Y-gonadotropin-releasing hormone circuitry in prepubertal heifers. Biology of Reproduction. 92(2), 46-10. Cardoso, R. C., Alves, B., Prezotto, L. D., Thorson, J. F., Tedeschi, L. O., Keisler, D. H., Amstalden, M., & Williams, G. L. (2014). Reciprocal changes in leptin and NPY during nutritional acceleration of puberty in heifers. Journal of Endocrinology. 223(3), 289-298. Cardoso, R. C., Alves, B., Prezotto, L. D., Thorson, J. F., Tedeschi, L. O., Keisler, D. H., ... Williams, G. L. (2014). Use of a stair-step compensatory gain nutritional regimen to program the onset of puberty in beef heifers. Journal of Animal Science. 92(7), 2942-2949. Thorson, J. F., Allen, C. C., Amstalden, M., & Williams, G. L. (2014). Pharmacologic application of native GnRH in the winter anovulatory mare, I: frequency of reversion to the anovulatory state following ovulation induction and cessation of treatment. THERIOGENOLOGY. 81(4), 579-586. Thorson, J. F., Prezotto, L. D., Cardoso, R. C., Allen, C. C., Alves, B., Amstalden, M., & Williams, G. L. (2014). Pharmacologic application of native GnRH in the winter anovulatory mare, II: accelerating the timing of pregnancy. THERIOGENOLOGY. 81(4), 625-631. Amstalden, M., Cardoso, R. C., Alves, B., & Williams, G. L. (2014). Hypothalamic neuropeptides and the nutritional programming of puberty in heifers. Journal of Animal Science. 92(8), 3211-3222. Velez, I. C., Pack, J. D., Porter, M. B., Sharp, D. C., Amstalden, M., & Williams, G. L. (2012). Secretion of luteinizing hormone into pituitary venous effluent of the follicular and luteal phase mare: novel acceleration of episodic release during constant infusion of gonadotropin-releasing hormone. Domestic Animal Endocrinology. 42(3), 121-128. Williams, G. L., Thorson, J. F., Prezotto, L. D., Velez, I. C., Cardoso, R. C., & Amstalden, M. (2012). Reproductive seasonality in the mare: neuroendocrine basis and pharmacologic control. Domestic Animal Endocrinology. 43(2), 103-115. Amstalden, M., Alves, B., Liu, S., Cardoso, R. C., & Williams, G. L. (2011). Neuroendocrine pathways mediating nutritional acceleration of puberty: insights from ruminant models. Frontiers in Endocrinology. 2(DEC), 109. Redmond, J. S., Baez-Sandoval, G. M., Spell, K. M., Spencer, T. E., Lents, C. A., Williams, G. L., & Amstalden, M. (2011). Developmental changes in hypothalamic Kiss1 expression during activation of the pulsatile release of luteinising hormone in maturing ewe lambs. Journal of Neuroendocrinology. 23(9), 815-822. Redmond, J. S., Macedo, G. G., Velez, I. C., Caraty, A., Williams, G. L., & Amstalden, M. (2011). Kisspeptin activates the hypothalamic-adenohypophyseal-gonadal axis in prepubertal ewe lambs. 141(4), 541-548. Thomas, M. G., Amstalden, M., Hallford, D. M., Silver, G. A., Garcia, M. D., Keisler, D. H., & Williams, G. L. (2009). Dynamics of GHRH in third-ventricle cerebrospinal fluid of cattle: relationship with serum concentrations of GH and responses to appetite-regulating peptides. Domestic Animal Endocrinology. 37(4), 196-205. Zuluaga, J. F., Saldarriaga, J. P., Cooper, D. A., Cartmill, J. A., & Williams, G. L. (2008). Evaluation of vaginal electrical resistance as an indicator of follicular maturity and suitability for timed artificial insemination in beef cows subjected to a synchronization of ovulation protocol. Animal Reproduction Science. 109(1-4), 17-26. Zuluaga, J. F., & Williams, G. L. (2008). High-pressure steam sterilization of previously used CIDR inserts enhances the magnitude of the acute increase in circulating progesterone after insertion in cows. Animal Reproduction Science. 107(1-2), 30-35. Zieba, D. A., Szczesna, M., Klocek-Gorka, B., Molik, E., Misztal, T., Williams, G. L., ... Murawski, M. (2008). Seasonal effects of central leptin infusion on secretion of melatonin and prolactin and on SOCS-3 gene expression in ewes. 198(1), 147-155. Herrera-Camacho, J., Ake-Lopez, J. R., Ku-Vera, J. C., Williams, G. L., & Quintal-Franco, J. A. (2008). Ovulatory response and embryo quality and development in superovulated Pelibuey ewes supplemented with polyunsaturated fatty acids in the diet. Tecnica Pecuaria en Mexico. 46(2), 107-117. Zieba, D. A., Klocek, B., Williams, G. L., Romanowicz, K., Boliglowa, L., & Wozniak, M. (2007). In vitro evidence that leptin suppresses melatonin secretion during long days and stimulates its secretion during short days in seasonal breeding ewes. Domestic Animal Endocrinology. 33(3), 358-365. Collins, S. M., Zieba, D. A., & Williams, G. L. (2007). Continuous administration of low-dose GnRH in mares II. Pituitary and ovarian responses to uninterrupted treatment beginning near the autumnal equinox and continuing throughout the anovulatory season. THERIOGENOLOGY. 68(4), 673-681. Williams, G. L., Amstalden, M., Blodgett, G. P., Ward, J. E., Unnerstall, D. A., & Quirk, K. S. (2007). Continuous administration of low-dose GnRH in mares I. Control of persistent anovulation during the ovulatory season. THERIOGENOLOGY. 68(1), 67-75. Saldarriaga, J. P., Cooper, D. A., Cartmill, J. A., Zuluaga, J. F., Stanko, R. L., & Williams, G. L. (2007). 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 F2alpha. Journal of Animal Science. 85(1), 151-162. Herrera-Camacho, J., Quintal-Franco, J. A., Williams, G. L., Quijano-Cervera, R., & Ku-Vera, J. C. (2006). Dry matter intake, rumen fermentation and microbial nitrogen supply in Pelibuey sheep fed low-quality rations and different levels of corn oil. Interciencia: journal of science and technology of the Americas. 31(7), 525-529. Zieba, D. A., Amstalden, M., & Williams, G. L. (2005). Regulatory roles of leptin in reproduction and metabolism: a comparative review. Domestic Animal Endocrinology. 29(1), 166-185. Amstalden, M., Harms, P. G., Welsh, T. H., Randel, R. D., & Williams, G. L. (2005). Effects of leptin on gonadotropin-releasing hormone release from hypothalamic-infundibular explants and gonadotropin release from adenohypophyseal primary cell cultures: further evidence that fully nourished cattle are resistant to leptin. Animal Reproduction Science. 85(1-2), 41-52. Maciel, M. N., Zieba, D. A., Amstalden, M., Keisler, D. H., Neves, J. P., & Williams, G. L. (2004). Chronic administration of recombinant ovine leptin in growing beef heifers: effects on secretion of LH, metabolic hormones, and timing of puberty. Journal of Animal Science. 82(10), 2930-2936. Zieba, D. A., Amstalden, M., Morton, S., Maciel, M. N., Keisler, D. H., & Williams, G. L. (2004). Regulatory roles of leptin at the hypothalamic-hypophyseal axis before and after sexual maturation in cattle. Biology of Reproduction. 71(3), 804-812. Garcia, M. R., Amstalden, M., Keisler, D. H., Raver, N., Gertler, A., & Williams, G. L. (2004). Leptin attenuates the acute effects of centrally administered neuropeptide Y on somatotropin but not gonadotropin secretion in ovariectomized cows (vol 26, pg 189, 2004). Domestic Animal Endocrinology. 27(1), 89-89. Garcia, M. R., Amstalden, M., Keisler, D. H., Raver, N., Gertler, A., & Williams, G. L. (2004). Leptin attenuates the acute effects of centrally administered neuropeptide Y on somatotropin but not gonadotropin secretion in ovariectomized cows. Domestic Animal Endocrinology. 26(3), 189-200. Amstalden, M., Zieba, D. A., Garcia, M. R., Stanko, R. L., Welsh, T. H., Hansel, W. H., & Williams, G. L. (2004). Evidence that lamprey GnRH-III does not release FSH selectively in cattle. REPRODUCTION. 127(1), 35-43. Maciel, M. N., Zieba, D. A., Amstalden, M., Keisler, D. H., Neves, J. P., & Williams, G. L. (2004). Leptin prevents fasting-mediated reductions in pulsatile secretion of luteinizing hormone and enhances its gonadotropin-releasing hormone-mediated release in heifers. Biology of Reproduction. 70(1), 229-235. Amstalden, M., Zieba, D. A., Edwards, J. F., Harms, P. G., Welsh, T. H., Stanko, R. L., & Williams, G. L. (2003). 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. Biology of Reproduction. 69(5), 1539-1544. Zieba, D. A., Amstalden, M., Morton, S., Gallino, J. L., Edwards, J. F., Harms, P. G., & Williams, G. L. (2003). Effects of leptin on basal and GHRH-stimulated GH secretion from the bovine adenohypophysis are dependent upon nutritional status. Journal of Endocrinology. 178(1), 83-89. Zieba, D. A., Amstalden, M., Maciel, M. N., Keisler, D. H., Raver, N., Gertler, A., & Williams, G. L. (2003). Divergent effects of leptin on luteinizing hormone and insulin secretion are dose dependent. Experimental Biology and Medicine. 228(3), 325-330. Garcia, M. R., Amstalden, M., Morrison, C. D., Keisler, D. H., & Williams, G. L. (2003). Age at puberty, total fat and conjugated linoleic acid content of carcass, and circulating metabolic hormones in beef heifers fed a diet high in linoleic acid beginning at four months of age. Journal of Animal Science. 81(1), 261-268. Garcia, M. R., Amstalden, M., Williams, S. W., Stanko, R. L., Morrison, C. D., Keisler, D. H., Nizielski, S. E., & Williams, G. L. (2002). Serum leptin and its adipose gene expression during pubertal development, the estrous cycle, and different seasons in cattle. Journal of Animal Science. 80(8), 2158-2167. Williams, G. L., Amstalden, M., Garcia, M. R., Stanko, R. L., Nizielski, S. E., Morrison, C. D., & Keisler, D. H. (2002). Leptin and its role in the central regulation of reproduction in cattle. Domestic Animal Endocrinology. 23(1-2), 339-349. Rasor, C. C., Thomas, M. G., Enns, R. M., Salazar, H. C., Zhang, H. M., Williams, G. L., ... Rios, J. (2002). Allelic and Genotypic Frequencies of the Leptin Gene Sau3AI-Restriction Fragment Length Polymorphism and Evaluation of Its Association with Age at Puberty in Cattle in the Southwestern United States and Northern Mexico11This work was supported in part by the New Mexico and Texas Agricultural Experiment Stations and by the Western Region Coordinating Committee in Beef Cattle Breeding Research (WCC-1). Professional Animal Scientist. 18(2), 141-146. Amstalden, M., Garcia, M. R., Stanko, R. L., Nizielski, S. E., Morrison, C. D., Keisler, D. H., & Williams, G. L. (2002). 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. Biology of Reproduction. 66(5), 1555-1561. Williams, S. W., Stanko, R. L., Amstalden, M., & Williams, G. L. (2002). Comparison of three approaches for synchronization of ovulation for timed artificial insemination in Bos indicus-influenced cattle managed on the Texas gulf coast. Journal of Animal Science. 80(5), 1173-1178. Williams, G. L., Gazal, O. S., Leshin, L. S., Stanko, R. L., & Anderson, L. L. (2001). Physiological regulation of maternal behavior in heifers: roles of genital stimulation, intracerebral oxytocin release, and ovarian steroids. Biology of Reproduction. 65(1), 295-300. Amstalden, M., Garcia, M. R., Williams, S. W., Stanko, R. L., Nizielski, S. E., Morrison, C. D., Keisler, D. H., & Williams, G. L. (2000). 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 I(1). Biology of Reproduction. 63(1), 127-133. Fajersson, P., Stanko, R. L., & Williams, G. L. (1999). Distribution and repeatability of anterior pituitary responses to GnRH and relationship of response classification to the postpartum anovulatory interval of beef cows. Journal of Animal Science. 77(11), 3043-3049. Gazal, O. S., Guzman-Vega, G. A., & Williams, G. L. (1999). Effects of time of suckling during the solar day on duration of the postpartum anovulatory interval in Brahman x Hereford (F1) cows. Journal of Animal Science. 77(5), 1044-1047. Thomas, M. G., Gazal, O. S., Williams, G. L., Stanko, R. L., & Keisler, D. H. (1999). Injection of neuropeptide Y into the third cerebroventricle differentially influences pituitary secretion of luteinizing hormone and growth hormone in ovariectomized cows. Domestic Animal Endocrinology. 16(3), 159-169. Gazal, O. S., Leshin, L. S., Stanko, R. L., Thomas, M. G., Keisler, D. H., Anderson, L. L., & Williams, G. L. (1998). 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. Biology of Reproduction. 59(3), 676-683. Puppione, D. L., Fischer, W. H., Park, M., Gazal, O. S., & Williams, G. L. (1998). Microsequencing of bovine cerebrospinal fluid apolipoproteins: identification of bovine apolipoprotein E. Lipids. 33(8), 781-786. Kotwica, J., Skarzynski, D., Jaroszewski, J., Williams, G. L., & Bogacki, M. (1998). Uterine secretion of prostaglandin F2alpha stimulated by different doses of oxytocin and released spontaneously during luteolysis in cattle. 38(3), 217-226. Bao, B., Thomas, M. G., & Williams, G. L. (1997). Regulatory roles of high-density and low-density lipoproteins in cellular proliferation and secretion of progesterone and insulin-like growth factor I by enriched cultures of bovine small and large luteal cells. Journal of Animal Science. 75(12), 3235-3245. Thomas, M. G., Bao, B., & Williams, G. L. (1997). Dietary fats varying in their fatty acid composition differentially influence follicular growth in cows fed isoenergetic diets. Journal of Animal Science. 75(9), 2512-2519. Williams, G. L. (1996). Influence of dietary fat intake and metabolism on follicular growth in cattle. Reproduction in Domestic Animals: physiology, pathology, biotechnology. 31(3), 539-542. Gazal, O. S., Stanko, R. L., Bao, B., & Williams, G. L. (1996). Oxytocin secretion by cells from bovine corpora lutea destined to be normal or short-lived. 43(2-3), 89-98. Griffith, M. K., & Williams, G. L. (1996). Roles of maternal vision and olfaction in suckling-mediated inhibition of luteinizing hormone secretion, expression of maternal selectivity, and lactational performance of beef cows. Biology of Reproduction. 54(4), 761-768. Thomas, M. G., & Williams, G. L. (1996). Metabolic hormone secretion and FSH-induced superovulatory responses of beef heifers fed dietary fat supplements containing predominantly saturated or polyunsaturated fatty acids. THERIOGENOLOGY. 45(2), 451-458. Bao, B., Thomas, M. G., Griffith, M. K., Burghardt, R. C., & Williams, G. L. (1995). Steroidogenic activity, insulin-like growth factor-I production, and proliferation of granulosa and theca cells obtained from dominant preovulatory and nonovulatory follicles during the bovine estrous cycle: effects of low-density and high-density lipoproteins. Biology of Reproduction. 53(6), 1271-1279. Ryan, D. P., Bao, B., Griffith, M. K., & Williams, G. L. (1995). Metabolic and luteal sequelae to heightened dietary fat intake in undernourished, anestrous beef cows induced to ovulate. Journal of Animal Science. 73(7), 2086-2093. Ryan, D. P., Spoon, R. A., Griffith, M. K., & Williams, G. L. (1994). Ovarian follicular recruitment, granulosa cell steroidogenic potential and growth hormone/insulin-like growth factor-I relationships in suckled beef cows consuming high lipid diets: effects of graded differences in body condition maintained during the puerperium. Domestic Animal Endocrinology. 11(2), 161-174. Silveira, P. A., Spoon, R. A., Ryan, D. P., & Williams, G. L. (1993). Evidence for maternal behavior as a requisite link in suckling-mediated anovulation in cows. Biology of Reproduction. 49(6), 1338-1346. Williams, G. L., McVey, W. R., & Hunter, J. F. (1993). Mammary somatosensory pathways are not required for suckling-mediated inhibition of luteinizing hormone secretion and delay of ovulation in cows. Biology of Reproduction. 49(6), 1328-1337. Gray, M. L., Greene, L. W., & Williams, G. L. (1993). Effects of dietary gossypol consumption on metabolic homeostasis and reproductive endocrine function in beef heifers and cows. Journal of Animal Science. 71(11), 3052-3059. Ryan, D. P., Spoon, R. A., & Williams, G. L. (1992). Ovarian follicular characteristics, embryo recovery, and embryo viability in heifers fed high-fat diets and treated with follicle-stimulating hormone. Journal of Animal Science. 70(11), 3505-3513. Cutshaw, J. L., Hunter, J. F., & Williams, G. L. (1992). Effects of transcutaneous thermal and electrical stimulation of the teat on pituitary luteinizing hormone, prolactin and oxytocin secretion in ovariectomized, estradiol-treated beef cows following acute weaning. THERIOGENOLOGY. 37(4), 915-934. Wehrman, M. E., Welsh, T. H., & Williams, G. L. (1991). Diet-induced hyperlipidemia in cattle modifies the intrafollicular cholesterol environment, modulates ovarian follicular dynamics, and hastens the onset of postpartum luteal activity. Biology of Reproduction. 45(3), 514-522. McVey, W. R., & Williams, G. L. (1991). Mechanical masking of neurosensory pathways at the calf-teat interface: endocrine, reproductive and lactational features of the suckled anestrous cow. THERIOGENOLOGY. 35(5), 931-941. MCVEY, W. R., & WILLIAMS, G. L. (1989). EFFECTS OF TEMPORARY CALF REMOVAL AND OSMOTIC PUMP DELIVERY OF GONADOTROPIN-RELEASING HORMONE ON SYNCHRONIZED ESTRUS, CONCEPTION TO A TIMED ARTIFICIAL-INSEMINATION AND GONADOTROPIN-SECRETION IN NORGESTOMET-ESTRADIOL VALERATE-TREATED CATTLE. 32(6), 969-978. Shively, T. E., & Williams, G. L. (1989). Patterns of tonic luteinizing hormone release and ovulation frequency in suckled anestrous beef cows following varying intervals of temporary weaning. Domestic Animal Endocrinology. 6(4), 379-387. Williams, G. L. (1989). Modulation of luteal activity in postpartum beef cows through changes in dietary lipid. Journal of Animal Science. 67(3), 785-793. Williams, G. L. (1988). Breeding capacity, behavior and fertility of bulls with Brahman genetic influence during synchronized breeding of beef females. THERIOGENOLOGY. 30(1), 35-44. Williams, G. L., Koziorowski, M., Osborn, R. G., Kirsch, J. D., & Slanger, W. D. (1987). The postweaning rise of tonic luteinizing hormone secretion in anestrous cows is not prevented by chronic milking or the physical presence of the calf. Biology of Reproduction. 36(5), 1079-1084. Allen, C. C., Alves, B., Li, X., Tedeschi, L. O., Zhou, H., Paschal, J. C., ... Amstalden, M. Gene expression in the arcuate nucleus of heifers is affected by controlled intake of high- and low-concentrate diets. Journal of Animal Science. 90(7), 2222-2232. Thorson, J. F., Prezotto, L. D., Cardoso, R. C., Sharpton, S. M., Edwards, J. F., Welsh, T. H., ... Williams, G. L. Hypothalamic distribution, adenohypophyseal receptor expression, and ligand functionality of RFamide-related peptide 3 in the mare during the breeding and nonbreeding seasons. Biology of Reproduction. 90(2), 28-9. chapter Amstalden, M., & Williams, G. L. (2015). Neuroendocrine Control of Estrus and Ovulation. BOVINE REPRODUCTION. (pp. 203-218). Wiley. conference paper Garza, V., Kellerman, J. I., Cardoso, R. C., & Williams, G. L. (2022). Impact of pre- and Post-Natal Nutritional Extremes on Responsiveness of Ovariectomized, Sexually Mature Heifers to a Neurokinin B Agonist During Progesterone Dominance. Journal of Animal Science. 136-136. Garza, V., Kellerman, J. I., Maia, T. S., Cardoso, R. C., & Williams, G. L. (2021). Impact of Pre- and Postnatal Nutritional Extremes on Tonic Secretion of Gonadotropins and Feedback Responsiveness to Estradiol in Sexually Mature Heifers. Journal of Animal Science. 131-131. Williams, G. L. (2021). Neuroendocrine Mechanisms Regulating Reproductive Transition in the Ruminant Female: Is KNDy Required?. Journal of Animal Science. 22-22. Williams, G. L. (2020). Preparing a quality animal care and use protocol. Journal of Animal Science. 72-72. Reese, S. T., Schubach, K., Brandao, A., West, S. M., O'Neil, M. M., Cardoso, R. C., Williams, G. L., & Pohler, K. y. (2019). Differences in prostaglandin release in cows with high vs low circulating concentrations of pregnancy associated glycoproteins. Journal of Animal Science. 244-245. O'Neil, M. M., West, S. M., Maia, T. S., Cardoso, R. C., & Williams, G. L. (2019). Effects of maternal nutrition on secretion of leptin in the neonatal heifer and interaction of maternal and postnatal nutrition on age at puberty and postpubertal secretion of luteinizing hormone. Journal of Animal Science. 140-141. Cardoso, R. C., & Williams, G. L. (2019). Neuroendocrine pathways and the nutritional control of puberty in heifers. Journal of Animal Science. 119-119. Cardoso, R. C., & Williams, G. L. (2019). Nutritional programming of puberty in Bos indicus-influenced heifers. Journal of Animal Science. 36-37. Williams, G. L., Alves, B., & Cardoso, R. C. (2018). Nutritional Programming of Puberty in Heifers: Developmental, Genomic and Functional Implications. Journal of Animal Science. 27-27. Cardoso, R. C., Alves, B., & Williams, G. L. (2018). Neuroendocrine signaling pathways and the nutritional control of puberty in heifers. Animal Reproduction. 868-878. Scarpa, J. O., O'Neil, M. M., Cardoso, R. C., Stanko, R. L., & Williams, G. L. (2017). Follicle dynamics and fertility at fixed-time AI of Bos indicus-influenced beef cows synchronized with the 5-Day Bee Synch plus Cidr protocol with or without GnRH on day. Journal of Animal Science. 234-234. Cardoso, R. C., Alves, B., Prezotto, L. D., Thorson, J. F., Tedeschi, L. O., Keisler, D. H., ... Williams, G. L. (2014). Use of a stair-step compensatory gain nutritional regimen to program the onset of puberty in beef heifers. Journal of Animal Science. 2942-2949. Alves, B., Liu, S., Stevenson, E., Thorson, J. F., Cardoso, R. C., Tedeschi, L. O., ... Amstalden, M. (2011). Accelerated Body Weight Gain During the Juvenile Period Reduces Neuropeptide Y Close Contacts with GnRH Neurons in Heifers. Biology of Reproduction. 191-191. Prezotto, L. D., Thorson, J. F., Cardoso, R. C., Amstalden, M., & Williams, G. L. (2011). Failure of an Equine Homologue of Avian Gonadotropin Inhibiting Hormone to Alter Secretion of Luteinizing Hormone in the Mare. Biology of Reproduction. 608-608. Allen, C. C., Li, X., Tedeschi, L. O., Zhou, H., Paschal, J. A., Spencer, T. E., ... Williams, G. L. (2009). Dietary Treatments That Facilitate Early Onset of Puberty in Heifers Alter Gene Expression in the Arcuate Nucleus. Biology of Reproduction. 158-159. Redmond, J. S., Macedo, G. G., Velez, I. C., Caraty, A., Williams, G. L., & Anistalden, M. (2009). Kisspeptin Activates the Hypothalamic-Pituitary-Gonadal Axis of Prepubertal Ewe Lambs. Biology of Reproduction. 157-157. Zuluaga, J. F., Saldarriaga, J. P., Cooper, D. A., Cartmill, J. A., & Williams, G. L. (2006). Assessment of vaginal electrical resistance (VER) as an indicator of follicular maturity and suitability for timed AI in cows subjected to a synchronization of ovulation protocol. Journal of Animal Science. 149-149. Zuluaga, J. F., Saldarriaga, J. P., Cooper, D. A., Cartmill, J. A., Stankol, R. L., & Williams, G. L. (2006). Effects of presynchronization with GnRH on conception rates and ovarian events in Bos indicus-influenced females synchronized with CO-Synch plus CIDR. Journal of Animal Science. 151-151. Zieba, D. A., Klocek, B., Williams, G. L., & Romanowicz, K. (2006). Interaction of season and leptin on melatonin secretion by pineal explants from seasonal breeding ewes. Biology of Reproduction. 166-166. Cooper, D. A., Cartmill, J. A., Saldarriaga, J. P., Zuluaga, J. F., & Williams, G. L. (2006). Seasonal reproduction in mares is not regulated by changes in the frequency or amplitude of GnRH pulses. Biology of Reproduction. 166-167. Zuluaga, J. F., & Williams, G. L. (2006). Serum progesterone concentrations in ovariectomized cows bearing new or previously used CIDR devices with or without autoclaving. Journal of Animal Science. 50-50. Amstalden, M., Spencer, T. E., Harms, P. G., Keisler, D. H., & Williams, G. L. (2004). Expression of leptin receptor and suppressor of cytokine signaling-3 in adenohypophysis of normal-fed and fasted cows. Biology of Reproduction. 107-107. Morton, S., Zieba, D., & Williams, G. L. (2004). Gonadotropin secretion and ovarian activity in non-pregnant mares treated continuously with GnRH during the anovulatory season. Journal of Dairy Science. 66-66. Morton, S., Zieba, D., & Williams, G. L. (2004). Gonadotropin secretion and ovarian activity in non-pregnant mares treated continuously with GnRH during the anovulatory season. Journal of Animal Science. 66-66. Zieba, D. A., Amstalden, M., Morton, S., Keisler, D. H., & Williams, G. L. (2004). Leptin acts at the hypothalamus to stimulate GnRH secretion in the fasted cow. Biology of Reproduction. 122-123. Zieba, D. A., Amstalden, M., Morton, S., Keisler, D. H., & Williams, G. L. (2004). Recombinant oleptin does not acutely accelerate the frequency of LH pulses at any developmental stage in normal and growth-restricted heifers. Poultry Science. 298-298. Zieba, D. A., Amstalden, M., Morton, S., Keisler, D. H., & Williams, G. L. (2004). Recombinant oleptin does not acutely accelerate the frequency of LH pulses at any developmental stage in normal and growth-restricted heifers. Journal of Animal Science. 298-298. Zieba, D. A., Amstaiden, M., Morton, S., Keisler, D. H., & Williams, G. L. (2004). Recombinant oleptin does not acutely accelerate the frequency of LH pulses at any developmental stage in normal and growth-restricted heifers. Journal of Dairy Science. 298-298. Morton, S., Zieba, D., & Williams, G. L. (2004). Gonadotropin secretion and ovarian activity in non-pregnant mares treated continuously with GnRH during the anovulatory season. Poultry Science. 66-66. Zieba, D. A., Amstalden, M., Maciel, M. N., Keisler, D. H., Raver, N., Gertler, A., & Williams, G. L. (2002). Dose-related effects of recombinant ovine leptin on luteinizing hormone secretion after short-term fasting in cows. Biology of Reproduction. 281-282. Amstalden, M., Zieba, E. A., Gallino, J. L., Morton, S., Edwards, J. F., Harms, P. G., ... Williams, G. L. (2002). Leptin modulates basal secretion of LH and enhances gonadotroph responsiveness to GnRH in adenohypophyseal explants from fasted cows. Biology of Reproduction. 281-281. Williams, G. L., Amstalden, M., Garcia, M. R., Williams, S. W., Ward, J., Blodgett, G. P., & Quirk, K. S. (2000). Control of lactational and idiopathic anovulation in mares with low-dose, native GnRH: Anterior pituitary and ovarian responses to continuous, subcutaneous infusion. Biology of Reproduction. 226-226. Amstalden, M., Garcia, M. R., Stanko, R. L., Nizielski, S. E., Morrison, C. D., Keisler, D. H., & Williams, G. L. (2000). Effects of acute feed restriction and central infusion of recombinant oleptin on the metabolic and central reproductive axes of mature cows. Biology of Reproduction. 181-181. Garcia, M. R., Amstalden, M., Williams, S. W., Stanko, R. L., Nizielski, S. E., Morrison, C. D., Keisler, D. H., & Williams, G. L. (2000). Leptin synthesis and secretion during pubertal development in heifers re-visited: Use of a ruminant specific RIA. Biology of Reproduction. 189-189. Garcia, M. R., Amstalden, M., Williams, S. W., Johnson, C. D., Nizielski, S. E., Keisler, D. H., & Williams, G. L. (1999). Leptin and pubertal development in heifers: Relationship of ob gene expression to circulating leptin as measured by heterologous radioimmunoassay. Biology of Reproduction. 253-253. Amstalden, M., Garcia, M. R., Williams, S. W., Stanko, R. L., Nizielski, S. E., Keisler, D. H., & Williams, G. L. (1999). Leptin gene expression is acutely responsive to short-term fasting in prepubertal heifers: Relationship to circulating leptin, insulin-like growth factor-1, and luteinizing hormone pulsatility. Biology of Reproduction. 122-122. Williams, G. L. (1998). Fat, follicles, and fecundity: The ruminant paradigm. 163-179. Williams, G. L., Gazal, O. S., & Stanko, R. L. (1997). Relationships of beta-endorphin, excitatory amino acids, and oxytocin in cerebrospinal fluid of the third ventricle to hypothalamic GnRH secretion in cows. Biology of Reproduction. 306-306. Williams, G. L., Gazal, O. S., Vega, G., & Stanko, R. L. (1996). Mechanisms regulating suckling-mediated anovulation in the cow. Animal Reproduction Science. 289-297. Thomas, M. G., Gazal, O. S., Williams, G. L., & Keisler, D. H. (1996). Neuropeptide Y suppresses tonic secretion of LH in cows. Biology of Reproduction. 387-387. Gazal, O. S., Vega, G., Stanko, R. L., & Williams, G. L. (1996). Pulsatile pattern of GnRH release in third ventricular cerebrospinal fluid of cattle: Correlation with LH during different physiological states. Biology of Reproduction. 147-147. GAZAL, O. S., STANKO, R. L., BAO, B., & WILLIAMS, G. L. (1995). OXYTOCIN SECRETION BY BOVINE LUTEAL CELLS DESTINED TO BE NORMAL-LIVED OR SHORT-LIVED. Biology of Reproduction. 111-111. WILLIAMS, G. L., & GRIFFITH, M. K. (1995). SENSORY AND BEHAVIORAL-CONTROL OF GONADOTROPIN-SECRETION DURING SUCKLING-MEDIATED ANOVULATION IN COWS. Reproduction. 463-475. FANNING, M. D., WILLIAMS, G. L., SPROTT, L. R., & FORREST, D. W. (1994). EFFECTS OF GNRH, A PROGESTIN AND OVARIECTOMY ON PLASMA-LH AND FSH IN BEEF HEIFERS. Biology of Reproduction. 170-170. BAO, B., THOMAS, M. G., & WILLIAMS, G. L. (1994). LIPOPROTEIN MODULATION OF STEROIDOGENESIS, INSULIN-LIKE GROWTH-FACTOR-I PRODUCTION, AND PROLIFERATION OF SMALL AND CONCENTRATED LARGE BOVINE LUTEAL CELLS IN-VITRO. Biology of Reproduction. 85-85. Williams, G. L. (1990). Suckling as a regulator of postpartum rebreeding in cattle: a review. Journal of Animal Science. 831-852. institutional repository document Patterson, D., Forrest, D. W., & Williams, G. L. (2007). Applied Reproductive Strategies in Beef Cattle
principal investigator on Genotypic Differentiation of Bovine KNDy Neuron Function awarded by National Institute of Food and Agriculture - (Washington D.C., District of Columbia, United States) 2021 - 2025 Physiology and Management of Pharmacologically-Controlled Breeding Programs in Beef Cows awarded by National Institute of Food and Agriculture - (Washington D.C., District of Columbia, United States) 2016 - 2021
awards and honors Animal Physiology and Endocrinology Award, conferred by American Society of Animal Science - (Champaign, Illinois, United States), 2004