The Use and Benefits of Bacillus Based Biological Agents in Aquaculture

Cordero, Héctor; Esteban, María Ángeles; Cuesta, Alberto

doi:10.5772/57198

Cited by 5 publications

(2 citation statements)

References 230 publications

(280 reference statements)

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“…This may be because shrimp reared in lower salinity have poor resistance to nitrite toxicity [48]. In the present study, shrimp cultured in low salinity (10 ppt) had a better survival rate which may be attributed to the application of probiotics, since probiotics can improve the resistance to the adverse environment and increase tolerance to stress [29][30][31][32].…”

Section: Shrimp Growthmentioning

confidence: 86%

Evaluation of Pacific Whiteleg Shrimp and Three Halophytic Plants in Marine Aquaponic Systems under Three Salinities

Chu

Brown

2020

Sustainability

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The effect of salinity on the growth performance of whiteleg shrimp (Litopenaeus vannamei) and three halophyte plants, red orache (Atriplex hortensis), okahijiki (Salsola komarovii), and minutina (Plantago coronopus), in a marine aquaponic system with biofloc was evaluated in this study. The experiment was conducted for 4 weeks, and the three treatments were 10, 15, or 20 ppt (parts per thousand). The growth performance of the shrimp and the three halophytes were affected by the salinity. Compared to the shrimp reared in 10 ppt, those reared in 15 and 20 ppt had higher final weight, weight gain rate (WGR), and specific growth rate (SGR), and lower feed conversion ratio (FCR). The results from shrimp raised in 15 ppt were 2.0 ± 0.1 g, 89.9 ± 2.2%, 2.3 ± 0.0%, and 1.5 ± 0.0, respectively, and those in 20 ppt were 2.0 ± 0.1 g, 93.9 ± 5.4%, 2.4 ± 0.1%, and 1.4 ± 0.1, respectively. On the other hand, the growth performance and nutrient content in halophyte plants decreased with the increasing salinity. In general, the three halophyte plants had better results in the 10 and 15 ppt treatments than those in 20 ppt. Therefore, the salinity of 15 ppt was suggested as the optimal condition for the integrated cultivation of whiteleg shrimp and the three halophytes in marine aquaponics. Additionally, they are compatible species for the development of marine aquaponics.

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Section: Shrimp Growthmentioning

confidence: 86%

Evaluation of Pacific Whiteleg Shrimp and Three Halophytic Plants in Marine Aquaponic Systems under Three Salinities

Chu

Brown

2020

Sustainability

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“…75,[165][166][167] Functional feed additives can indirectly act as growth promoters by improving immune function, reducing oxidative stress, and enhancing disease resistance, rather than directly providing extra nutrients essential to growth. There is an array of products sold under commercial trademarks (e.g., Novacq, ALIMET, and Sanocare) that report improved survival and growth, [168][169][170][171] and while the active ingredients of these can include bioactives obtained from plant-derived purifications, the majority appear to be from microbial biomass-derived sources. In the absence of recombinant engineering of microbes, most of the processes used to produce functional feed additives are discoveries of biological action and lack the enforceable protections of a patent (e.g., US H2218H).…”

Section: Improvements In Efficiencymentioning

confidence: 99%

The Future of Aquatic Protein: Implications for Protein Sources in Aquaculture Diets

et al. 2019

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Approximately 70% of the aquatic-based production of animals is fed aquaculture, whereby animals are provided with high-protein aquafeeds. Currently, aquafeeds are reliant on fish meal and fish oil sourced from wild-captured forage fish. However, increasing use of forage fish is unsustainable and, because an additional 37.4 million tons of aquafeeds will be required by 2025, alternative protein sources are needed. Beyond plantbased ingredients, fishery and aquaculture byproducts and insect meals have the greatest potential to supply the protein required by aquafeeds over the next 10-20 years. Food waste also has potential through the biotransformation and/or bioconversion of raw waste materials, whereas microbial and macroalgal biomass have limitations regarding their scalability and protein content, respectively. In this review, we describe the considerable scope for improved efficiency in fed aquaculture and discuss the development and optimization of alternative protein sources for aquafeeds to ensure a socially and environmentally sustainable future for the aquaculture industry.

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