<b>Dietary mannan oligosaccharide and <i>Bacillus subtilis</i> in diets for Nile tilapia (<i>Oreochromis niloticus</i>)

Abstract

A six week study was conducted to investigate the supplementation of prebiotic (Mannan oligosaccharide-MOS, from yeast Saccharomyces cerevisiae), probiotic (Bacillus subtilis-BS, C-3102 strain) and their combination in diets for Nile tilapia. 192 fishes (4.03 ± 0.28 g) were distributed into 16 tanks (40-L), in a completely randomized design (n=4). The following treatments were evaluated: control; prebiotic-2 g MOS kg-1 ; probiotic-2 g BS kg-1 and synbiotic-1 g MOS kg-1 plus 1 g BS kg-1. Fishes fed diets pre-, pro-and synbiotic supplemented performed better in average daily gain, feed conversion rate, specific growth rate, protein efficiency ratio, carcass yield, total and standard length and body height than those maintained on control diets. The probiotic supplementation resulted in higher villus height and intestinal perimeter ratio than the control diet while the pre-and synbiotic supplementation in diets resulted in higher intestinal perimeter ratio. Carcass protein and ether extract were, respectively, higher and lower in fish fed synbiotic diets than other fish. The results of this study indicated that the mannan oligosaccharide and Bacillus subtilis supplementation, isolated or combined (synbiotic), could improve growth, body index, intestine morphometry and carcass composition in Nile tilapia.

Effects of Yeast on the Growth Performance of Sangkuriang Catfish Fingerlings (Clarias gariepinus var. Sangkuriang)

“…The mixture was formed as pellets with a 2 mm diameter, adjusted to the mouth size of the catfish fingerlings, and then dried at room temperature. Next, S. cerevisiae was diluted in 100 ml water for 1 kg feed (de Azevedo et al, 2016). Saccharomyces cerevisiae suspension was put in the sprayer bottle and then sprayed on an experimental feed containing Cr 2 O 3 .…”

“…Due to the inefficiency of feed to support growth, the enrichment of the commercial feed with yeast (Saccharomyces cerevisiae) is urgently needed. The yeast (S. cerevisiae) could boost digestive enzyme activities; therefore, it increased the breakdown of complex nutrients into simpler forms to be easily absorbed in the digestive tract (de Azevedo et al, 2016). Sitohang et al (2012) stated that S. cerevisiae produced metabolic products, including amylase and peptidase proteolytic.…”

“…Some studies on the effect yeast (S. cerevisiae) on freshwater and marine fish have been done, such as in Barbonymus gonionotus (Rachmawati et al, 2019a), Cyprinus carpio (Al-Refaiee et al, 2016), Oreochromis niloticus (de Azevedo et al, 2016), Pangasius hypothalamus (Rachmawati et al, 2019b), Labeo rohita (Tewary & Patra, 2011), and Sarotherodon galileaus (Abdel-Tawwab et al, 2010). However, there is a lack of information about the effect of yeast (S. cerevisiae) to enhance commercial feed by increasing feed efficiency and growth of Sangkuriang catfish fingerlings.…”

Effects of dietary supplementation of a marine thermotolerant bacterium, Bacillus paralicheniformis SO‐1, on growth performance and immune responses of Nile tilapia, Oreochromis niloticus

“…Among the most commonly utilized probiotics, the genus Bacillus is extensively used as a feed supplement in aquaculture and has been proved to enhance the growth performance and health of farmed fish (Akhter et al, ; Azevedo et al, ). However, no information is available on the applications of their thermotolerant counterparts in aquaculture sector.…”

“…Similar results have also been reported in hybrid tilapia (Genc, Yilmaz, Genc, & Aktas, ) and rainbow trout (Bagheri, Hedayati, Yavari, Alizade, & Farzanfar, ) fed bacterial‐supplemented diets. This suggests that dietary probiotic supplementation may have improved digestion and absorption of amino acids and fatty acids (Azevedo et al, ).…”