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ARS Home » Southeast Area » Auburn, Alabama » Aquatic Animal Health Research » Research » Publications at this Location » Publication #423921
Research Project: Integrated Research to Improve Aquatic Animal Health in Warmwater Aquaculture

Location: Aquatic Animal Health Research

Title: Feed utilization efficiency, intestinal histology, and physiological gene expression of Pacific white shrimp L. vannamei in biofloc systems

Author
item NGUYEN, KHANH - Auburn University
item HUSSAIN, AYA - Auburn University
item CUELLAR-ANGEL, JORGE - Auburn University
item Garcia, Julio
item BRUCE, TIMOTHY - Auburn University
item DAVIS, D. - Auburn University

Submitted to: Aquaculture America
Publication Type: Abstract Only
Publication Acceptance Date: 1/19/2024
Publication Date: 2/18/2024
Citation: Nguyen, K.Q., Hussain, A.E., Cuellar-Angel, J., Garcia, J.C., Bruce, T.J., Davis, D.A. 2024. Feed utilization efficiency, intestinal histology, and physiological gene expression of Pacific white shrimp L. vannamei in biofloc systems. Aquaculture America [ABSTRACT]. Aquaculture America 2024, San Antonio, Texas. Feb. 18-21, 2024

Interpretive Summary:

Technical Abstract: 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, fermented, expeller-pressed soybean meal, soy protein concentrate, and an animalbased 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-ß1 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.