Grant Dewell, DVM, MS, PhD

Articles by Grant Dewell, DVM, MS, PhD

Estrous synchronization is the manipulation of the reproductive cycle so that cows can be bred in a predefined interval. Typically, estrous synchronization has been used to facilitate artificially insemination (AI) by decreasing labor to detect estrus and to schedule breeding to specific days.

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Trichomoniasis is a sexually transmitted reproductive disease of cattle caused by Tritrichomonas foetus (formally named Trichomonas foetus). There has been a re-emergence of the disease due to increased movement of breeding cattle across the country. The disease is characterized by infertility and early embryonic death.

There has been a lot of discussion in the past 10-15 years regarding the number of Food Supply Veterinarians (FSV) and/or Rural Veterinary Practitioners (RVP). The difference in these two populations is that FSV include government veterinarians (APHIS and FSIS), researchers, educators and other veterinarians that are somehow connected with a food animal production.

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The heifer selection program is a vital aspect of a commercial cow-calf operation. Since replacement heifers represent the future potential of the herd, successful replacement programs are a high priority item requiring careful attention by the ranch manager.

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