Jeffrey D. Armstrong

Effects of active immunization against growth-hormone releasing factor on puberty and reproductive development in gilts

Journal of Animal Science, 77(7), 1807–1814.

Developing course materials using the World Wide Web

NACTA Journal, 41(2), 10–15.

Effects of acute endotoxemia on serum somatotropin and insulin like growth factor I concentrations in prepubertal gilts

American Journal of Veterinary Research, 58(9), 1010–1013.

Recombinant bovine somatotropin increases milk yield and calf gain in diverse breeds of beef cattle: Associated changes in hormones and indices of metabolism

Journal of Animal Science, 73(10), 3051.

Concentrations of hormones and metabolites, estimates of metabolism, performance, and reproductive performance of sows actively immunized against growth hormone-releasing factor

Journal of Animal Science, 72(6), 1570.

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

DOMESTIC ANIMAL ENDOCRINOLOGY, 10(4), 315–324.

Changes in growth hormone and luteinizing hormone following acute or chronic administration of an opioid agonist, FK33-824, in wethers

Journal of Animal Science, 69(2), 774.

Active immunization of pigs against growth hormone-releasing factor: Effect on concentrations of growth hormone and insulin-like growth factor 1

Journal of Animal Science, 68(2), 427.

OPIOID CONTROL OF GROWTH-HORMONE IN THE SUCKLED SOW IS PRIMARILY MEDIATED THROUGH GROWTH-HORMONE RELEASING-FACTOR

DOMESTIC ANIMAL ENDOCRINOLOGY, 7(2), 191–198.

Morphine suppresses luteinizing hormone concentrations in transiently weaned sows and delays onset of estrus after weaning

Journal of Animal Science, 66(9), 2216.

Season, suckling and nutrition alter ovarian function in swine through control of gonadotropin-releasing hormone

Dissertation Abstracts International. B, Sciences and Engineering, 47(8), 3178.

Seasonal differences in function of the hypothalamic-hypophysial-ovarian axis in weaned primiparous sows

Journal of Reproduction & Fertility, 78(1), 11.

PULSATILE ADMINISTRATION OF GONADOTROPIN-RELEASING HORMONE TO ANESTROUS SOWS - ENDOCRINE CHANGES ASSOCIATED WITH GNRH-INDUCED AND SPONTANEOUS ESTRUS

BIOLOGY OF REPRODUCTION, 33(2), 375–380.