Carcass Composition of Boran and Tanzania Shorthorn Zebu Steers Finished under different Concentrate levels in Tanzania
Journal Title: Journal of Animal Production Advances - Year 2013, Vol 3, Issue 7
Abstract
The aim of the study was to evaluate the effect of breed and concentrate supplementation on carcass composition. Sixty-four steers of Boran and Tanzania Shorthorn Zebu (TSZ), respectively were allocated equally to four dietary treatments. Steers were fed ad libitum hay and ad libitum concentrate, restricted to 60% or 50% of ad libitum concentrate, and grazing only for 100 days before slaughtering. The concentrate composed maize, cotton seedcake, molasses, salt, mineral mix and urea. The 6th rib from the left side of each carcass was cut and dissected into lean, fat and bone content for estimation of percentage lean, fat and bone in the carcass. Meat samples were minced and subjected to proximate analysis on wet bases. Fat content increased with increasing levels of concentrate supplementation but moisture and protein content decreased with increasing levels of concentrate (P = 0.0001). In conclusion, fattening steers with concentrate supplementation of up to 60% of adlibitum intake improves carcass composition of both breeds.
Authors and Affiliations
D. S. Shija , A. J. Mwilawa , G. H. Laswai , A. E. Kimambo , L. A. Mtenga , D. M. Mgheni
Keywords
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