Effect of dietary probiotic Biogen^�supplementation as a growth promoter on growth performance and feed utilization of Nile tilapia Oreochromis niloticus (L.)

Abstract

Probiotic microbial feed supplements are gaining wide acceptance in livestock production, and may be applicable to aquaculture production systems. The present study was conducted to examine probiotic treatment in the fingerling diet of Nile tilapia Oreochromis niloticus (L.). A total of 240 of Nile tilapia fingerlings (weight ranged from 22.96 to 26.40 g) were divided into five experimental groups. The experiment was conducted for 120 days. Experimental diets were identical in all, except for the variation in probiotic levels. A probiotic (Biogen®) was used at 0% (diet 1), 0.5% (diet 2), 1.5% (diet 3), 2.0% (diet 4) and 2.5% (diet 5) inclusion rates in the experimental diets. The growth performance and nutrient utilization of Nile tilapia including weight gain, specific growth rate, protein efficiency ratio, protein productive value and energy retention were significantly (P≤0.01) higher in the treatment receiving probiotic (Biogen®) than the control diet. No differences were observed for moisture, ash and protein content (P≤0.01) among the experimental diets. The lowest gross energy and lipid contents were recorded for fish fed the diet containing 0.5% Biogen® (P≤0.01). The production performance and subsequent cost–benefit analyses clearly indicated that the diets containing probiotic biogen recorded the highest net return and the lowest total cost compared with the control diet.

Comparison of fecundity and offspring immunity in zebrafish fed Lactobacillus rhamnosus CICC 6141 and Lactobacillus casei BL23

“…Probiotics can also: provide necessary growth factors, vitamins, or amino acids (Lara-Flores et al 2003, Lara-Flores 2011; affect the organism's energy metabolism and energy balance and lead to a higher growth rate (El-Haroun et al 2006, Al-Dohail et al 2009); and improve fecundity . However, the exact molecular mechanisms by which probiotics regulate the gene expression of leptin and gnrh have yet to be uncovered.…”

Probióticos em dietas para tilápia do Nilo durante a reversão sexual

“…A minimização desses problemas tem fomentado várias pesquisas nos últimos anos, visando a substituir os antibióticos por probióticos na produção animal, especialmente em cultivos de organismos aquáticos (NAYAK, 2010 Os Bacillus subtilis e Bacillus cereus são ótimos candidatos a probióticos utilizados em organismos aquáticos. Segundo EL-HAROUN et al (2006), as espécies dessas bactérias podem ser liofi lizadas e, portanto, são capazes de sobreviver a altas temperaturas, como, por exemplo, após o processo de peletização, podem ser armazenadas em temperatura ambiente sem qualquer efeito deletério, resistindo ao baixo pH e podendo chegar intactos ao intestino delgado (CUTTING, 2011).…”

“…Tendo em vista a necessidade de minimizar o lançamento de efl uentes oriundos dos cultivos de peixes, os probióticos são alternativas para a solução desse problema, pois alguns trabalhos envolvendo organismos aquáticos (EL-HAROUN et al, 2006;MARENGONI et al, 2010) argumentam que estes microorganismos podem melhorar a conversão alimentar, resultando assim em menor quantidade de resíduos no meio ambiente e um menor custo ao produtor. Poucos são os trabalhos científi cos que elucidam a utilização de probiótico em rações formuladas para peixes, portanto é necessário fomentar as pesquisas neste setor de estudo, que é um dos elos considerados básicos na tilapicultura.…”

Characterization of Bioflocs in a No Water Exchange Super-intensive System for the Production of Food Size Pacific White Shrimp <i>Litopenaeus vannamei</i>

“…These bacteria once established within a RAS aid in the maintenance of water quality, most often with respect to nitrification (Kuhn et al, 2010). Further advantages to bacterial supplementation include microbial floc as natural food to improve growth (Burford et al, 2004;El-Haroun et al, 2006), prevention of pathogen proliferation through competitive exclusion (Verschuere et al, 2000), and immunostimulation of the immune system of target organisms (Ganguly et al, 2010). Although probiotic cultures have proved beneficial, most organisms rely on a complex community of microbial flora to grow most efficiently and aid in immune function.…”