Comparison of wet brewers waste and dry brewers waste as protein supplements for growing-finishing pigs

Abstract

Abstract by author:

Brewers waste, a by-product of the brewing industry has the potential to be used as a substitute for commercial protein feed sources. This by-product is normally thrown away from the breweries and as a result adds to environmental pollution. The aim of this study was to compare wet brewers waste (WBW) and dry brewers waste (DBW) as a protein supplement for growing-finishing pigs. Eight pigs in two groups of four were offered either wet brewers waste or dry brewers waste. The brewers waste was fed in the mornings, while in the afternoons, all the groups were offered a commercial feed in order to meet their maintenance requirements. The pigs were allowed to feed for two hours only and then the left-overs were removed, weighed and dried. The amount of feed given to the different pig groups depended on the amount left-over. All pigs were weight on a weekly basis to determine their growth. There was no difference (P-0. 05) in weight gains of the two treatments. There also was no difference (P-0. 05) in dry matter intake between the two treatments