• Publications
  • Influence
Defining postpartum uterine disease in cattle.
Uterine function is often compromised in cattle by bacterial contamination of the uterine lumen after parturition, and pathogenic bacteria often persist, causing uterine disease, a key cause ofExpand
  • 915
  • 150
Hormonal regulation of uterine secretion of prostaglandin F2 alpha during luteolysis in ruminants.
In recent years, considerable progress has been made in our understanding of the endocrine mechanisms that control the pattern and timing of uterine secretion of prostaglandin F2 alpha (PGF2 alpha)Expand
  • 281
  • 8
Steroidal regulation of uterine resistance to bacterial infection in livestock
  • G. S. Lewis
  • Biology, Medicine
  • Reproductive biology and endocrinology : RB&E
  • 28 November 2003
Postpartum uterine infections reduce reproductive efficiency and have significant animal welfare and economic consequences. Postpartum uterine infections are classified as nonspecific, butExpand
  • 103
  • 5
Steroidal regulation of uterine immune defenses.
  • G. S. Lewis
  • Medicine, Biology
  • Animal reproduction science
  • 1 July 2004
Progesterone suppresses uterine immune defenses and predisposes postpartum animals to nonspecific uterine infections. Progesterone can also suppress uterine eicosanoid synthesis. This effect ofExpand
  • 105
  • 5
Changes throughout estrous cycles of variables that might indicate estrus in dairy cows.
Two experiments examined physiological changes throughout estrous cycles of Holstein cows. In experiment one, changes were characterized for physical activity, vaginal pH, vaginal temperature, milkExpand
  • 57
  • 5
B-mode, real-time ultrasound for estimating carcass measures in live sheep: accuracy of ultrasound measures and their relationships with carcass yield and value.
Accuracy and repeatability of live-animal ultrasound measures, and the relationships of these measures with subprimal yields and carcass value, were investigated using data from 172 wethers. WethersExpand
  • 44
  • 5
Exogenous oxytocin dilates the cervix in ewes.
Cervical anatomy in ewes usually prevents nonsurgical, intrauterine AI and transcervical embryo transfer (ET), which limits their commercial use in sheep. This study was conducted to determineExpand
  • 60
  • 4
Metabolism of arachidonic acid in vitro by bovine blastocysts and endometrium.
Metabolism of arachidonic acid and prostaglandin F2 alpha by bovine blastocysts and endometrial slices recovered on Days 16 and 19 postmating was studied in vitro. In Experiment 1, arachidonic acidExpand
  • 60
  • 4
The incidence of genotypes at codon 171 of the prion protein gene (PRNP) in five breeds of sheep and production traits of ewes associated with those genotypes.
Scrapie is one of several transmissible spongiform encephalopathies of livestock. Disease susceptibility is linked to polymorphisms in the normal prion protein gene that encodes the mammalian prionExpand
  • 46
  • 4
Fertility and ovum fertilization rate after laparoscopic or transcervical intrauterine artificial insemination of oxytocin-treated ewes.
Based on our previous work, we found that exogenous oxytocin induces uterine tetany and cervical dilation, and permits transcervical access to the uterus. However, the oxytocin does not reduceExpand
  • 54
  • 4