Prehminary results are presented for live weight at slaughter and carcass and meat characteristics of steers in the first of three calf crops to be produced in Cycle V of the Germplasm Evaluation (GPE) Program at the Roman L. Hruska U. S. Meat Animal Research Center (MARC). Progeny of Hereford, Angus and Belgian Blue sires were heavier (441 days) than those of Brahman, Piedmontese, Boran, or Tuli sires (P< 05). Mean weight of retail product was greater for progeny of Belgian Blue sires than for Piedmontese sires, which was greater than for Hereford, Angus or Brahman sires, which was greater than for Tuli and Boran sires (P<05). Progeny of Piedmontese and Belgian Blue sires exceeded those of all other sire breeds in percentage of retail product (P< 05). Marbling score was higher in progeny of Angus, Tuli, Hereford and Boran sires than in progeny of Piedmontese sires, which was higher than in
 progeny ofBrahman and Belgian Blue sires (P<05). Shear force and sensory panel evaluations indicated that longissimus muscle steaks from progeny of Belgian Blue, Piedmontese, Angus, Hereford, and Tuli sires were significantly more tender than those from progeny of Boran or Brahman sires. 

L. V Cundiff, K. E Gregory, T. L Wheeler, S. D Shackelford, M. Koohmaraie

Proceedings of the World Congress on Genetics Applied to Livestock Production, Volume 17. Genetics and breeding of dairy and beef cattle, swine and horses, , 272–275, 1994
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