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Comparison Of Calf-Fed Vs. Yearling-Fed Management For The Estimation Of Carcass Trait Genetic Parameters In Simmental Cattle, Richard G. Tait Jr.
Comparison Of Calf-Fed Vs. Yearling-Fed Management For The Estimation Of Carcass Trait Genetic Parameters In Simmental Cattle, Richard G. Tait Jr.
Richard G. Tait Jr.
Selection indexes for feedlot performance have been developed by U.S. beef breed associations to help commercial producers with multiple trait selection decisions. The objective of this study was to evaluate the implications of backgrounding cattle after weaning on selection for feedlot profitability. Carcass data records for 11,011 animals and a three generation pedigree were obtained from the American Simmental Association database. Carcass traits of primary interest in this analysis were marbling score (MARB), 12th rib fat thickness (CFT), 12th rib ribeye area (CREA), and hot carcass weight (HCW). Estimated post weaning gain (EPWG) was determined using weaning weight …