Growth performance, muscle and liver composition, blood traits, digestibility and gut bacteria of beluga (Huso huso) juvenile fed different levels of soybean meal and lactic acid

Abstract

The objective of this study was to assess the effects of fishmeal (FM) replacement with 0, 350 or 700 g/kg soybean meal (SBM) in combination with the supplementation of lactic acid (LA; 0, 10 or 20 g/kg) in the diets of juvenile beluga sturgeon (Huso huso; 700 ± 30 g). Nine isonitrogenous (400 g/kg protein) and isoenergetic (18 MJ/kg) diets were fed to beluga ad libitum, three times a day, for 60 days. The results showed that replacing FM with SBM without LA significantly reduced fish growth; on the other hand, LA supplementation had positive effects on fish fed diets that FM was replaced by SBM (p < .05). Increasing SBM in the diet altered the fatty acid profiles of the fish, reducing long‐chain polyunsaturated fatty acids and the n‐3/n‐6 fatty acids. High amounts of SBM (700 g/kg) caused reductions in the haematocrit, glucose and cholesterol levels in the blood (p < .05). In addition, the digestibility of protein, fat, dry matter and phosphorus was reduced when replacing FM with SBM, however, adding LA to the diets increased fish performance (p < .05), and this improvement was sharper in 2% LA groups. The number of LA bacteria increased significantly with the dietary supplementation of LA (p < .05). Based on these results, replacing 350 g/kg of FM with SBM and adding 20 g/kg LA to their feed do not negatively affect the biological and physiological indices of beluga.

The effects of water additive Bacillus cereus and Pediococcus acidilactici on water quality, growth performances, economic benefits, immunohematology and bacterial flora of whiteleg shrimp (Penaeus vannamei Boone, 1931) reared in earthen ponds

“…The amount of feeding and frequency was estimated based on the table presented by the manufacturing company of shrimp feed (Table ). The analysis of proximate composition of the diets (protein, lipid and ash contents) was done according to AOAC method (AOAC, ; Esmaeili, Kenari, et al, ; Matani Bour, Esmaeili, & Abedian Kenari, ).…”

“…The analysis of proximate composition of the diets (protein, lipid and ash contents) was done according to AOAC method (AOAC, 2000;Matani Bour, Esmaeili, & Abedian Kenari, 2018).…”

Comparative study on the effects of different feeding habits and diets on intestinal microbiota in Acipenser baeri Brandt and Huso huso

“…Being carnivorous, Beluga sturgeon was come from the Huso genus and has the higher protein requirement to satisfy tissue growth and maintenance [17]. Meanwhile, there was evidence showed that replacing fishmeal with soybean meal without lactic acid significantly reduced growth performances of beluga, which further suggested that animal protein plays a key role in beluga diets due to their feeding habits [18]. The phylogenetic relationship between Siberian sturgeon and Beluga sturgeon is very close, because they belong with the same family.…”

Autochthonous probiotics Lactococcus lactis and Weissella confusa in the diet of fingerlings great sturgeon, Huso huso : effects on growth performance, feed efficiency, haematological parameters, immune status and intestinal morphology

“…Today, sturgeon farming has been expanded rapidly in the world. Among the aquaculture of sturgeons, great sturgeon, Huso huso , has made a promising candidate because of high growth, resistance to stress factors and reception of formulated diets (Matani Bour et al, 2018; Pajand et al, 2017).…”