John P. Kastelic

The use of progestins in regimens for fixed-time artificial insemination in beef cattle.

The ischiorectal fossa: an alternative route for the administration of prostaglandin in cattle.

The effects of 3 gonadorelin products on luteinizing hormone release, ovulation, and follicular wave emergence in cattle.

Effects of scrotal insulation on sperm production, semen quality, and testicular echotexture in Bos indicus and Bos indicus x Bos taurus bulls.

Comparison of methods to evaluate the plasmalemma of bovine sperm and their relationship with in vitro fertilization rate.

Testicular thermoregulation in Bos indicus, crossbred and Bos taurus bulls: relationship with scrotal, testicular vascular cone and testicular morphology, and effects on semen quality and sperm production.

Sexual development in early- and late-maturing Bos indicus and Bos indicus x Bos taurus crossbred bulls in Brazil.

Colonization of cattle intestines by Campylobacter jejuni and Campylobacter lanienae.

Effect of nutrition during calfhood and peripubertal period on serum metabolic hormones, gonadotropins and testosterone concentrations, and on sexual development in bulls.

Effect of improved nutrition during calfhood on serum metabolic hormones, gonadotropins, and testosterone concentrations, and on testicular development in bulls.

Effects of plasma progesterone concentrations on LH release and ovulation in beef cattle given GnRH.

Resynchronization of estrus in beef cattle: ovarian function, estrus and fertility following progestin treatment and treatments to synchronize ovarian follicular development and estrus.

Comparison of 2 enzyme immunoassays and a radioimmunoassay for measurement of progesterone concentrations in bovine plasma, skim milk, and whole milk.

Na+/K+ATPase regulates sperm capacitation through a mechanism involving kinases and redistribution of its testis-specific isoform.

Activation of AMP-activated protein kinase may not be involved in AICAR- and metformin-mediated meiotic arrest in bovine denuded and cumulus-enclosed oocytes in vitro.

Unilateral ovarian absence in two capuchin monkeys.

Catheterization of intestinal loops in ruminants does not adversely affect loop function.

Validating the assessment of bull sperm morphology by veterinary practitioners.

The effect of growth hormone (GH) and insulin-like growth factor-I (IGF-I) on in vitro maturation of equine oocytes.

Non-therapeutic administration of a model antimicrobial growth promoter modulates intestinal immune responses.

Permanent contraception of dogs induced with intratesticular injection of a Zinc Gluconate-based solution.