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Case Study: Feed Intake And Performance Of Heifers Sired By High- Or Low-Residual Feed Intake Angus Bulls, J. Minick Bormann, D. W. Moser, T. T. Marston
Case Study: Feed Intake And Performance Of Heifers Sired By High- Or Low-Residual Feed Intake Angus Bulls, J. Minick Bormann, D. W. Moser, T. T. Marston
Haskell Agricultural Laboratory (Northeast Research and Extension Center)
The objective of this project was to investigate the effects of selecting sires for residual feed intake (RFI) on the performance of their daughters. Bulls with low or high estimated breeding values (EBV) for RFI were selected from the Angus Society of Australia sire summary and mated to Angus cross commercial cows at the Kansas State University Cow-Calf Unit in 2005 and 2006. The average EBV of low- and high-RFI bulls were −0.55 and 0.27 kg DM, respectively. Heifers born in 2006 were tested for feed intake in 2 groups (n = 24, n = 26), and heifers born in …