Enzyme-Supplemented Diets
The effect of feed-grade enzyme supplements added to diets
of growing and laying Japanese quails were evaluated. The experiment
involved six dietary treatments (three energy levels and two enzyme
levels) fed to six replicates of 14 chicks. They reported that the addition
of feed enzymes to conventional diets containing corn, soybean meal,
fish meal and de-oiled rice bran was not beneficial in improving growth,
carcass traits, egg production performance or nutrient utilization.
Elangovan, A.V. and co-workers. 2004. Effects of enzymes in diets with
varying energy levels on growth and egg production performance of Japanese
quail. J. Sci. Food and Agric. 84(15): 2028-2034.
Enzyme-Supplemented Diets
Whereas, company research showed that including 80 MU/ton of beta-mannanase
(1 MU=10(6) enzyme activity units) to a corn-soybean meal diet, without
antibiotic or coccidiostats, improved broiler gains (3.9-4.8%) and feed
conversion (3.5-3.8%). The researchers were not able to demonstrate
a significant response when 50MU/ton mannanase diets were fed. Feeding
110 MU/ton resulted in no significant additional response over the 80MU/ton
treatment.
Jackson, M.E. and co-workers. 2004. A dose-response study with the
feed enzyme beta-mannanase in broilers provided with corn-soybean meal
based diets in the absence of antibiotic growth promoters. Poultry Sci.
83(12): 1992-1996.
