Dr. Bill Weiss, The Ohio State University; Dr. Matt Akins, University of Wisconsin
Co-host: Dr. Clay Zimmerman, Balchem
Today’s podcast is our Today’s podcast is the latest installment of the Journal Club where we take a closer look at some of the newest research published around the world. Today we are focused on research centered around dietary energy and genomic residual feed intake in bred heifers.
Dr. Akins explained RFI is residual feed intake, and is the difference between the actual energy intake and the expected intake based on equations. If it’s negative, the animal ate less than predicted and a positive RFI means they ate more and were less efficient. (7:38)
Dr. Akins also said that diet, high versus low energy, had about a 9-10% reduction in intake, which is about two to two and a half pounds, which was right where predictions were. (19:00)
Dr. Akins compared strategies for bred heifers to limit feedings and said both are good options. Limit feeding takes a lot to manage dry matter, animal intakes and body measurements as underfeeding or overfeeding can have major effects and is less forgiving than a high fiber forage system. (32:15)
Dr. Akins mentioned a big take-home for producers from this study would be that diet energy and fiber can be useful to control body weight. Use NDF and the diet as a control measure for dry matter intake and make sure you’re balancing the energy content to meet the needs of the heifer. (57:29)
To read the article referenced in this podcast click here: https://www.journalofdairyscience.org…
You can contact Dr. Akins for more information or questions at msakins@wisc.edu.
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This podcast is sponsored by Balchem Animal Nutrition and Health.
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