TILAPIA GROWTH PERFORMANCE USING CORN PROTEIN WITH YEAST

Alexandra K. Amorocho*, Elkin R. Montecino and D. Allen Davis
School of Fisheries, Aquaculture and Aquatic Sciences
Auburn University Auburn, AL 36849
aka0025@auburn.edu
 

The development of improved feedstuffs from the ethanol industry can be a source of protein in practical tilapia diets. A series of five diets were formulated using a low fishmeal basal diet containing 2% fishmeal 8% corn protein concentrate (CPC), and 40% soybean meal (SBM) as the primary protein sources. The CPC was incrementally reduced (8, 6, 4, 2, 0%) and replaced on an equal protein basis with corn protein with yeast (CPY: 0, 3.1, 6.3, 9.4 and 12.6%). The diets were offered to sex reversed juvenile tilapia (7.5 g initial mean weight) over a 9 week growth trial. Four replicate groups of 20 fish/aquaria were offered the test diets at near satiation levels. At the conclusion of the growth trial, there were no significant differences in any of the measured parameters and no indications of any trends in the data. Results demonstrate that the CPC and CPY are equivalent product and should be considered high quality protein sources for tilapia feed formulations.