Effects of dietary β-glucans on the productive performance, blood parameters, and intestinal microbiota of angelfish (Pterophyllum scalare) juveniles

An Acad Bras Cienc. 2024 Mar 4;96(1):e20231006. doi: 10.1590/0001-3765202420231006. eCollection 2024.ABSTRACTAmong the potential feed additives, β-glucans are known to positively affect the growth performance, blood parameters, and intestinal microbiota of fish, even the ornamental species. Therefore, the present study evaluated the effects of the dietary supplementation of different Saccharomyces cerevisiae β-glucans concentrations (0, 0.05, 0.1, and 0.2%) in juvenile angelfish (Pterophyllum scalare) over a 42-day period. Regarding growth performance, no effects were observed on most parameters. However, 0.2% β-glucans supplementation produced higher condition factor values, indicating a better nutritional status. Furthermore, β-glucans supplementation did not affect blood parameters. Regarding intestinal microbiota, β-glucans supplementation increased the abundance of the potentially beneficial bacterial genus Phascolarctobacterium. The high abundance of bacteria from the phylum Bacteroidetes, which can degrade β-glucans, may be attributed to the increased abundance of Phascolarctobacterium spp. In addition, 0.2% β-glucans supplementation produced more operational taxonomic units and higher Sobs (observed species richness), indicating effects on the overall bacterial community structure. These results demonstrate the potential application of β-glucans as a dietary supplement to improve the performance and modulate the intestinal microbiota of angelfish.PMID:38451599...

Source: An Acad Bras Cienc - March 7, 2024 Category: Science Authors: Ed C S DE Lima Felipe P DE Souza P âmela Juliana Furlan-Murari Victor C ésar F Pandolfi Nat ália G Leite Raffaella M Mainardi Roberta T Chideroli Ulisses P Pereira Eduardo Jos é A Araújo Andr éia Carla E Pupim Jo ão Fernando A Koch Nelson Mauricio Source Type: research