Soya bean‐based diets plus probiotics improve the profile of fatty acids, digestibility, intestinal microflora, growth performance and the innate immunity of beluga (Huso huso)

• Published in: Aquaculture research Vol. 52; no. 1; pp. 152 - 166
• Main Authors: Montazeri Parchikolaei, Homeyra, Abedian Kenari, Abdolmohammad, Esmaeili, Moha
• Format: Journal Article
• Language: English
• Published: Oxford John Wiley & Sons, Inc 01.01.2021
• Subjects: animal growth; aquaculture; Bacillus licheniformis; Bacillus subtilis; Beans; Body weight gain; complement; Control; Diet; Digestibility; Fatty acids; Fish; fishmeal replacement; growth performance; Huso huso; Immunity; immunostimulants; Innate immunity; Intestinal microflora; intestinal microorganisms; Intestine; Lysozyme; Muscles; phosphorus; Polyunsaturated fatty acids; Probiotics; protein content; Soybeans; weight gain
• ISSN: 1355-557X; 1365-2109
• DOI: 10.1111/are.14877

This study was conducted to investigate the effect of different methods of using probiotics Bacillus subtilis and Bacillus licheniformis in soya bean‐based diets on the physiology of beluga (Huso huso) (351 ± 4 g). Five experimental diets were formulated to feed beluga for 10 weeks. The results showed that there was no significant difference in weight gain between control (446 g) and 70%SBM‐SPRAY2 (409 g) treatments. Long‐chain polyunsaturated fatty acids in the muscle of beluga fed control (203.2 g/kg) and 70%SBM‐SPRAY2 (166.4 g/kg) diet did not change statistically. Blood performance as a newly introduced factor in individuals fed dietary control (64.06) and 70%SBM‐SPRAY2 (64.33) had higher value as compared with those fed dietary 70%SBM‐DIET2 (61.90) (p < 0.05). Also, total protein (1.68 g/dl) and RBC (0.74 × 106/mm3) in fish fed 70%SBM were statistically lower than other treatments (p < 0.05). Lysozyme, alternative complement activity and total viable counts in beluga fed dietary probiotics were significantly higher than others. In conclusion, feeding fish with the 70%SBM‐SPRAY2 diet improved fish growth and health.