Isolation of probiotic bacteria from the hybrid South American catfish Pseudoplatystoma reticulatum×Pseudoplatystoma corruscans (Siluriformes: Pimelodidae): A haematological approach

β‐glucan improved growth performance of the catfish Pseudoplatystoma reticulatum without affecting haematological biomarkers after bacterial challenge with Aeromonas hydrophila : A preliminary study

“…The values for the haematological variables after the feeding assay (0 hr) (Table 2) were consistent with the reported in the literature for healthy P. reticulatum (Silva et al., 2020; Jerônimo et al., 2015; Mouriño et al., 2016; Sanchez et al., 2014; Sousa et al., 2019). The lack of a significant effect of dietary β‐glucan supplementation on those variables indicates that it did not negatively impact fish haematology.…”

Gut histology, immunology and the intestinal microbiota of rainbow trout, Oncorhynchus mykiss (Walbaum), fed process variants of soybean meal

“…For example, Photobacteria , Aeromonas , Yersinia , Pseudomonas , Vibrio and Flavobacterium genera are all recognized to be potentially serve as pathogens to a variety of cultured fish species, but low levels of these bacteria in the healthy gut have been found to be nonpathogenic and may be considered native to the gut microbiota (Dehler, Secombes & Martin, ; Llewellyn et al., ; Zarkasi et al., ). Other potentially beneficial bacteria genera were also present, such as Weisella (0.27% total composition of the BSBM‐L group), and W. cibaria has been shown to modulate lactic acid bacteria and red blood cell counts in South American catfish ( Pseudoplatystoma reticulatum S. × Pseudoplatystoma corruscans P. (Mouriño et al., ). Carnobacteria (0.67% total composition of the CSPC group) was detected within treatment groups and has the potential to exert some probiotic effects in fish species, namely the inhibition of aquatic pathogens (Dehler et al., ; Kim & Austin, ; Robertson, O'Dowd, Burrells, Williams & Austin, ).…”

Effects of anEnterococcus faecium‐based probiotic on growth performance and health of Pirarucu,Arapaima gigas

“…The bacteria E. faecium was isolated from healthy A. gigas , selected by in vitro assays by our research group according to Mouriño et al (), identified by MALDI‐TOF mass spectrometry (Microflex) (Seuylemezian et al, ), with identification confirmed using a molecular approach by Neoprospecta microbiome technologies (Santa Catarina State, Brazil). This study was approved by an Ethics Committee for Animal Experimentation (CEUA/172008FAPESPA01).…”