Aquaculture America 2024

February 18 - 21, 2024

San Antonio, Texas

EFFECTS OF DIFFERENT SOYBEAN INGREDIENTS AS MAIN PROTEIN SOURCE ON GROWTH PERFORMANCE, FEED UTILIZATION EFFICIENCY, INTESTINAL HISTOLOGY, AND PHYSIOLOGICAL GENE EXPRESSION OF PACIFIC WHITE SHRIMP Litopenaeus vannamei IN BIOFLOC SYSTEM

Khanh  Q.  Nguyen*, Aya E. Hussain,  Jorge Cuéllar-Anjel, Julio Garcia,  Timothy  J. Bruce ,  D. Allen Davis

 

 School of Fisheries, Aquaculture and Aquatic Sciences

 Auburn University

 Auburn, AL 36849,

kqn0001@auburn.edu

 



The purpose of this study was to assess the effect of replacing solvent extracted soybean meal  with more advance soy-based proteins  on growth performance, feed utilization efficiency, intestine histology, and gene expression  when reared  under  intensive biofloc culture conditions .  The study was carried out  at  stocking density  of  30 shrimp tank-1 (~166 shrimp m-2) at an initial weight of 1.18 ± 0.001 g .  Shrimp were fed  over  eight weeks using four replicate tanks, with six experimental diets including solvent extracted, low oligosaccharide, fermente d, expeller-pressed soybean meal, soy protein concentrate ,  and an animal-based diet  with 50% fishmeal and 50% meal as protein source .  The trial findings demonstrated substantial differences between shrimp groups , particularly  those received animal-based and plant-based diets, for all growth parameters (p<0.05), except for survival rate (p>0.05). With respect to feed utilization efficiency, we observed interesting trends with significant higher in phosphorus retention and apparent net protein retention for all diets except for that of soy protein concentrate (p<0.05). Concerning histology, no significant impact of the tested ingredients on histomorphology could be seen (p>0.05 ). While shrimp fed SPC and basal diets signified noticeable down regulation for the expression of tgf-β1 and sod (p<0.05) . Based on these findings, additional study on diverse processed soybean sources under bacterial-driven conditions is needed to get greater insight into combining multiple soybean constituents for an improve dietary matrix for shrimp farming.