Feedlot performance and carcass characteristics of Hereford and Texas Longhorn X Hereford steers

Holbert, T.; Schake, L.M.; Savell, J.W.; Brenni, J.; Caldwell, J.; McCoy, W.E.

Beef cattle research in Texas: 67-71


Accession: 001078296

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Data on 80 Hereford and 80 Texas Longhorn X Hereford F1 steers were compared over a feeding period of 172 days. Av. daily gain was significantly greater for the Herefords up to 155 days, after which the crossbreds exceeded the purebreds. Dry matter feed conversion ratios indicated that Herefords were more efficient than crossbreds, except during the last 12 days. Herefords increased more in percentage units of 9-10-11 rib fat, and therefore decreased more in lean and bone percentages during finishing, than crossbreds. Muscle:bone ratio at slaughter was significantly greater for crossbreds (3.02:1) than for purebreds (2.77:1). Crossbred carcasses had more mature lean scores and higher marbling scores and USDA quality grades than Hereford carcasses. Crossbred steers also deposited significantly less external carcass fat, had lighter carcasses, and lower USDA yield grades. Steaks from crossbred carcasses were significantly better in flavour than those from purebreds, but the 2 genotypes were nearly equal in other palatability characters.