Growth performance, feed efficiency and carcass and meat quality of tropically adapted breed types from different farming systems in South Africa
P. E. Strydom A D , L. Frylinck A , J. van der Westhuizen B and H. M. Burrow CA Nutrition and Food Science, Livestock Business Division: Agricultural Research Council of South Africa, Private Bag X2, Irene, Gauteng 0062, South Africa.
B Animal Recording and Improvement, Livestock Business Division: Agricultural Research Council of South Africa, Private Bag X2, Irene, Gauteng 0062, South Africa.
C CRC for Beef Genetic Technologies, CJ Hawkins Homestead, University of New England, Armidale, NSW 2351, Australia.
D Corresponding author. Email: pstrydom@arc.agric.za
Australian Journal of Experimental Agriculture 48(5) 599-607 https://doi.org/10.1071/EA06057
Submitted: 15 February 2006 Accepted: 12 December 2007 Published: 7 April 2008
Abstract
Two experiments measured the ability of tropically adapted beef breeds from resource-poor farmer herds in South Africa to produce high quality beef under commercial feedlot conditions. The resource-poor farming sector consists of ‘emerging’ and communal farmers. The herd and breed groups consisted of Sanga types (tropically adapted Bos taurus breed) including Nguni, Tuli, Bonsmara and Drakensberger, as well as Brahman and non-descript groups. The cattle were slaughtered after an average of 97 days in the first experiment and after an average of 92, 140 and 169 days on a grain-based diet in the second experiment. Growth performance, carcass quality and yield, occurrence of disease and meat quality were measured.
The performance of the breeds groups was a function of their genetic potential and herd type (carcass weight and condition at arrival). Steers from emerging and communal farmer herds enter the feedlot at a lighter weight, but show similar growth performance to achieve acceptable, albeit lighter carcass weights, than their commercial counterparts. The incidence of disease was no different between commercial, emerging and communal herds. Carcass and meat quality analyses indicate small or no differences between herd types or breeds, except that Brahman produced tougher meat. It was concluded that cattle from resource-poor farmer herds have the ability to meet the specifications of South Africa’s commercial beef markets, indicating a genuine opportunity for import substitution, whereby the more than 5 million cattle in resource-poor farmer herds could be used to overcome the significant shortfall in South Africa’s domestic beef market demand.
Acknowledgements
The authors thank the Australian Centre for International Agricultural Research (ACIAR) and their participating officers for financial and technical support South Africa’s Agricultural Research Council personnel for technical support and the South African emerging, communal and commercial farmers who contributed animals to the trial.
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