This episode was recorded at the 2025 Florida Ruminant Nutrition Symposium.

Dr. DeVries’ research focuses on farm-level decisions and modeling. The University of Florida dairy has implemented the use of beef semen. Dr. DeVries describes some of the factors that go into a partial budget for this system as well as details some of the factors involved in implementing beef on dairy. The UF dairy genomically tests all their cows and the panel discusses some differences in beef and dairy selection based on genomics. (5:58)

Dr. Felix asks how the beef sires are selected for the UF dairy. Calving ease and fertility are key, as well as low cost. Dr. Johnson asks if spending a little more on beef semen might pay off in the longer term regarding beef quality. The panel agrees that in the current market, dairy producers are getting $800-$1000 for a day-old calf regardless of the beef sire, so perhaps beef sire selection has not been a major focus. (15:07)

Dr. DeVries describes some of the data he evaluates when deciding how many cows to breed with sexed dairy semen. Given the current beef prices, heifer retention has not been as high in either the beef or dairy sector as previously predicted. (19:22)

The panel discusses the importance of cow longevity in the dairy sector. Dr. DeVries explains the pros and cons of keeping cows in the milking herd longer. Dr. Nelson reminds listeners of the current cull cow market and how that also plays a role in decision-making for dairy and beef producers. (24:16)

Dr. Nelson describes the heifer development program for the UF dairy. Week-old heifer calves are shipped to Kansas for development and return to UF at about 200-220 days pregnant. This approach is very common in the southeast. Many of the beef on dairy calves will also be shipped to calf ranches out of state. (30:59)

Dr. DeVries’ model concluded that switching from conventional dairy to beef-on-dairy resulted in about $150 advantage per cow per year. On top of that was another $50 per cow because of the switch to sourcing your heifers from your best cows. (34:13)

The panel discusses the idea of transferring beef embryos into dairy cows. Could there be a day when this approach creates beef calves less expensively than the cow/calf sector can? They also delve into whether there will be any long-term negative impacts of breeding dairy cows with beef semen. (38:44)

Dr. Johnson mentions another paradigm shift of the beef-on-dairy system is feeding dairy-influenced heifers in the feedlot, which has not happened before. Technologies used to promote growth in the feed yard can induce spontaneous lactation in some of these heifers. Milk is considered an adulterant in the packing plant and requires trimming if it splashes on a carcass. Dr. Nelson suggests that until there is a discount for heifer beef on dairy calves, there won’t be a shift to using sexed male semen to create predominantly beef on dairy steers. (48:33)

The panel wraps up with their take-home thoughts. (57:46)

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