Articles
Developing Course Materials Using The World Wide Web (with Mike O'Kane), NACTA Journal (1997)
The World Wide Web provides a powerful new resource for education in agriculture and the...
Immunization against growth hormone releasing factor or chronic feed restriction initiated at 3.5 months of age reduces ovarian response to pulsatile administration of gonadotropin-releasing hormone at 6 months of age and delays onset of puberty in heifers (with P. D. Schoppee, R. W. Harvey, M. D. Whitacre, A. Felix, and R. M. Campbell), Biology of Reproduction (1996)
A severe or moderate suppression of serum insulin-like growth factor I (IGF-I) was induced in...
Ovarian expression of insulin-like growth factor-I (IGF-I), IGF binding proteins, and growth hormone (GH) receptor in heifers actively immunized against GH-releasing factors (with W. S. Cohick, M. D. Whitacre, M. C. Lucy, R. W. Harvey, and R. M. Campbell), Endocrinology (1996)
Active immunization against GRF at 6 months of age delays puberty in beef heifers. The...
Aspartate and Glutamate Modulation of Growth Hormone Secretion in the Pig: Possible Site of Action (with C. R. Barb, R. M. Campbell, and N. M. Cox), Domestic Animal Endocrinology (1996)
The influence of excitatory amino acids (EAA) on growth hormone (GH) secretion and the possible...
Insulin-like Growth Factor-I (IGF-I) and IGF Binding Proteins: Potential Mediators of the Influence of Nutrition on Ovarian Function in the Heifer and Gilt (with A.M. Benoit, K. Swanchara, and P. Schoppee), Reproduction in Domestic Animals (1996)
Nutrition influences age at puberty, duration of postpartum anestrus, and ovulation rate. Mechanisms mediating these...
The Teaching and Advising Portfolio: A Guide for NACTA Members (with Bryce H. Lane), NACTA Journal (1995)
Effect of Somatotropin and/or Equine Chorionic Gonadotropin on Serum and Follicular Insulin-Like Growth Factor I and Insulin-Like Growth Factor Binding Proteins in Cattle (with R. L. Stanko, W. S. Cohick, D. W. Shaw, R. W. Harvey, D. R. Clemmons, and M. D. Whitacre), Biology of Reproduction (1994)
We investigated the effect of administration of somatotropin (ST) and/or eCG on insulin-like growth factor...
Effect of feed restriction on serum somatotropin, insulin-like growth factor-I-(IGF-I) and IGF binding proteins in cyclic heifers actively immunized against growth hormone releasing factor (with W. S. Cohick, R. W. Harvey, E. P. Heimer, and R. M. Campbell), Domestic Animal Endocrinology (1993)
Feed restriction often increases serum somatotropin (ST) and decreases insulin-like growth factor-I (IGF-I) in ruminants;...
Endocrine Events Prior to Puberty in Heifers: Role of Somatotropin, Insulin-Like Growth Factor-I and Insulin-Like Growth Factor Binding Proteins (with R. L. Stanko, W. S. Cohick, R.B. Simpson, R. W. Harvey, B.G. Huff, D. R. Clemmons, M.D. Whitacre, R.M. Campbell, and E.P. Heimer), Journal of Physiology and Pharmacology (1992)
We have utilized active immunization against growth hormone releasing factor (GRF) to investigate relationships among...
Effect of active immunization against growth hormone releasing factor on concentrations of somatotropin and insulin-like growth factor I in lactating beef cows (with K. L. Moore, R. W. Harvey, R. M. Campbell, and E. P. Heimer), Domestic Animal Endocrinology (1992)
Two experiments were conducted to determine the effects of immunoneutralization of growth hormone-releasing factor [GRF(1–29)-NH2]...
Opioid control of growth hormone in the suckled sow is primarily mediated through growth hormone releasing factor (with K. L. Esbenshade, M. T. Coffey, E. Heimer, R. Campbell, T. Mowles, and A. Felix), Domestic Animal Endocrinology (1990)
Endogenous opioid peptides mediate the effect of suckling on LH and PRL in the domestic...
Effects of Naloxone or Transient Weaning on Secretion of LH and Prolactin in Lactating Sows (with R. R. Kraeling and J. H. Britt), Journal of Reproduction and Fertility (1988)
Sows (N = 16) were infused intravenously for 8 h with saline or naloxone (200...
Absence of a nocturnal rise in either norepinephrine, N-acetyltransferase, hydroxyindole-O-methyltransferase or melatonin in the pineal gland of the domestic pig kept under natural environment photoperiods (with Russel J. Reiter and Jack H. Britt), Neuroscience Letters (1987)
Castrated male and intact female pigs were kept under natural photoperiodic and temperature conditions and...
Influence of follicular ablation during lactation on postweaning interval to estrus, ovulation rate, and endocrine function in sows (with N. M. Cox and J. H. Britt), Domestic Animal Endocrinology (1987)
Duroc sows farrowed second litters in March and lactated 35 ± 2 days. At 36...
Changes in the Hypothalamic-Hypophyseal-Ovarian Axis of Primiparous Sows Following Weaning or Pulsatile Gonadotropin Releasing Hormone Administration and Weaning (with N. M. Cox and J. H. Britt), Theriogenology (1987)
Lactating primiparous sows were used to examine relationships among hypothalamic gonadotropin releasing hormone (GnRH), serum,...
Seasonal Differences in Function of the Hypothalamic-Hypophysial-Ovarian Axis in Weaned Primiparous Sows (with J. H. Britt and N. M. Cox), Journal of Reproduction and Fertility (1986)
Primiparous sows were fed to appetite during lactations that occurred during winter or summer, and...
Pulsatile Administration of Gonadotropin-releasing Hormone to Anestrous Sows: Endocrine Changes Associated with GnRH-induced and Spontaneous Estrus (with J. H. Britt), Biology of Reproduction (1985)
This experiment determined whether pulsatile administration of gonadotropin-releasing hormone (GnRH) would induce estrus and ovulation...