Meat studies of indigenous Southern African cattle. I. Growth performance and carcass characteristics of Afrikaner, Nguni and P

Author: J. Swanepoel, N.H. Casey, J.F. de Bruyn and R.T. Naudé
Year: 1990
Issue: 4
Volume: 20
Page: 180 - 187

Afrikaner, Nguni and Pedi weaner bulls (15 per breed) were fed individually from initial masses of 168, 159 and 160 kg to predetermined target masses of 290, 340 and 390 kg respectively. Feed and water were freely available. The diet consisted of the standard concentrate fed to bulls participating in Phase C of the performance test, supplemented with 0,4 kg Eragrostis curvula hay per day. Analyses of variance and least-significant differences between means indicated no breed differences in either average daily gain or feed conversion ratio over the growth intervals, although a breed effect on the number of days fed was found to be significant (P < 0,05). The Nguni was found to have the heavier carcass (P < 0,05), greater dressing percentage (P < 0,05), the more compact carcass (P < 0,05) and hind quarter (P <0,01), and a lighter hide (%) (P < 0,05). Minor breed effects were found in the content of carcass bone, muscle, fat and total meat. These differences were insufficient to influence the grading scores, in which no differences were recorded.


Keywords: : Growth, bulls, carcass. feedlot
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