Use of new feed from brewery by-products for breeding layers

Abstract

Brewery by-products decellulosed mixture was produced from brewery by-products (brewer's spent grain with hot sludge + protein sludge from press liquor + brewer's yeast). The new protein feed was produced by fractionation (sieving) of dried brewery by-products. This paper shows the technological production procedure, the chemical composition and the nutritive value of this non-conventional feed. The tested production procedure enables effective and economic production of new protein feed. Applied processing parameters make a good basis for designing mechanical - technological lines for industrial production of new feed in the breweries. Non-conventional protein feed (calculated on dry matter basis) is the concentrated source of crude protein (390 g/kg), crude fat (102 g/kg) and linoleic acid (49 g/kg). This new feed significantly increased (p<0.05) egg production, egg fertility and hatchability of fertilized eggs. The new feed has a comparative nutritive advantage in relation to soybean meal as a source of nutrients for breeding layers. © 2010 University of Bucharest.