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Recent Developments in Estrus Synchronization Protocols

Pedro Fontes, Ph.D. Assistant Professor and Extension Specialist – The 2023 sire directories from genetic companies are now available to beef producers. In addition to including a wide variety of new sires, these directories also include updates in their estrus synchronization protocol sheets. These updates include new protocols that are…
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Estrus Synchronization Programs for Natural Service

Pedro Fontes, Nathan Eason, Andy Carter, Jason Duggin – Estrus synchronization programs have the ability of inducing cyclicity in postpartum cows and can be used in combination with natural service breeding to increase the percentage of cows and heifers that become pregnant early in the season. This publication describe different…
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Applying the Concept of Relative Age Effect to Our Calf Crop

Pedro L. P. Fontes, Ph.D. Assistant Professor and Extension Specialist The Relative Age Effect is a term commonly used to describe how children athletes born early in the academic year tend to perform to a higher level than those born later. For example, softball athletes born between May and August…
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Where is all that beef semen going?

Pedro Fontes, Ph.D. – Assistant Professor and Extension Specialist – There has been a remarkable increase in beef semen sales over the last few years. While artificial insemination (AI) is a powerful tool that has really helped the beef industry make genetic progress, thisincrease in beef semen sales not necessarily…
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Consequences of Long-term Commitment to Estrus Synchronization

Pedro Fontes, Ph.D. – Assistant Professor and Extension Specialist – We now know that a variety of factors such as nutrition, semen quality, AI technician, and vaccinations (to name a few) can influence the success of an AI program. In this article, Dr. Pedro Fontes discusses how long-term commitment to…
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