Mixed culture microorganisms fermented soybean meal improves productive performance and intestinal health of Nile tilapia (Oreochromis niloticus) juveniles fed plant‐based diets in a biofloc system. (7th April 2022)

• Record Type: Journal Article
• Authors: Picoli, Fernanda; Marques, Suelyn de Oliveira; Oliveira, Alana Duarte de; Nunes, Cristina Gradin; Serafini, Suélen; Klein, Bruna; de Oliveira, Nandara Soares; Santos, Nataly Neves Oliveira dos; Zampar, Aline; Lopes, Diogo Luiz de Alcantara; El Hadi Perez Fabregat, Thiago
• Is Part Of: Aquaculture research. Volume 53:Number 12(2022)
• Page Start: 4233
• Page End: 4245
• Publication Date: 2022-04-07
• Subjects: goblet cell -- lactic acid bacteria -- probiotic microorganism -- villi height -- yeast; Aquaculture -- Periodicals; Fishery management -- Periodicals; 639.8
• DOI: 10.1111/are.15859
• Languages: English
• ISSNs: 1355-557X

Abstract

Abstract: This study aimed to evaluate the effect of plant‐based diets containing different inclusion levels (7%, 14%, 21% and 28%) of mixed culture microorganisms fermented soybean meal (FSBM) on the zootechnical performance and intestinal health of juvenile Nile tilapia ( Oreochromis niloticus ) reared in a biofloc system. The FSBM diets were compared with a positive control diet with fish meal and a negative control diet with no animal protein. All diets were isoprotein (33% CP) and isoenergetic (4300 kcal GE/kg). The design was completely randomized with four replications and the experiment lasted 54 days. Juveniles (1.635 ± 0.198 g) were distributed in 24 tanks (70 L) at a density of seven animals per tank. Fermentation increased probiotic microorganisms count (lactic acid bacteria 4.75 ± 0.21 log CFU g −1 and yeast 3.30 ± 0.54 log CFU g −1 ) and improved nutritional characteristics of FSBM. In fish fed the diet containing 7% FSBM, growth performance did not differ from fish fed the fish meal diet. FSBM inclusion improved the food efficiency of plant‐based diets. The inclusions above 21% of FSBM increased the intestinal villi height. In the inclusion of 28% of FSBM, the goblet cell was higher compared to that of the other plant‐based diets. The inclusion of 7% FSBM allows a total replacement of fish meal without compromising the growth performance of the animals.