Validity of purulent vaginal discharge, esterase, luminometry, and bacteriological tests for diagnosing uterine infection in dairy cows
The laboraty test was the most accurate for detecting uterine infections in dairy cows, but it is not practical on farms. A simpler method called luminometry may be a useful alternative.
Jun 1, 2025
Use of bacterial markers to predict endometritis in dairy cows
This project needs a Master’s degree (M.Sc.) student in veterinary science. If you have a background in veterinary medicine, animal science, molecular biology, bioinformatics, or a related field, and you have experience in research laboratories and working with cattle, please contact us!
Jun 1, 2025
Randomized controlled trial of intrauterine cephapirin treatment in cows of 100 days in milk or more affected by reproductive tract diseases
Treating dairy cows with reproductive diseases significantly improved their chances of getting pregnant again, compared to cows with these diseases that weren’t treated.
Mar 2, 2025
Identification of the optimal diagnostic criteria combination for reproductive tract diseases in dairy cows of 100 days in milk or more
Two on-farm tests allowed to detect reproductive diseases in dairy cows, showing that cows with these conditions had lower chances of becoming pregnant compared to healthy cows.
Mar 1, 2025
Is prolonged luteal phase a problem in lactating Holstein cows?
Many dairy cows had long reproductive cycles not solely due to pregnancy loss, suggesting that extended luteal phase might be a common but overlooked feature in high-producing cows.
Oct 1, 2024
Herd-level associations between the proportion of elevated prepartum nonesterified fatty acid concentrations and postpartum diseases, reproduction, or culling on dairy farms
Dairy herds with more cows showing high blood levels of nonesterified fatty acid before calving were more likely to have cows develop reproductive diseases and to have poor success at first insemination.
Jan 1, 2024
The effect of progesterone concentrations during superovulation of Holstein heifers in a randomized trial
While progesterone levels during follicular growth did not affect estrus intensity or duration, higher progesterone resulted in more follicles at AI and better embryo quality, suggesting a role for progesterone in improving embryo production in superovulated heifers.
Dec 1, 2023
Pigeons in urban landscapes: Population control using OvoControl®P at TransLink SkyTrain stations
Sep 6, 2023
Circulating progesterone at insemination and accessory spermatozoa are associated with fertilization and embryo quality five or six days post insemination in dairy cattle
Embryos were more likely to be of high quality when cows had lower progesterone levels at insemination and when more sperm reached the embryo. Younger cows and those with higher progesterone levels had lower chances of successful fertilization.
Sep 1, 2022
Association between genomic daughter pregnancy rates and reproductive parameters in Holstein dairy cattle
Cows with higher Genomic Daughter Pregnancy Rate scores were more likely to get pregnant and less likely to lose a pregnancy, suggesting that selecting cows with better genetics for fertility could improve reproductive outcomes on farms.
Jun 1, 2022