Tag - nutrient

Probiotics in Shrimp Aquaculture

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Shrimp ranks as the most favorite seafood among US consumers, and more than half of the shrimp in the market are coming from aquaculture. After decades of impressive growth, global shrimp aquaculture production in 2012 reached 3.78 million tons. However, catastrophic disease outbreaks have hindered the growing pace of the shrimp industry from time to time and caused tremendous economic loss, in billions of USD$ collectively. The most recent disease problem was the outbreak of the Early Mortality Syndrome (EMS) [...]


Applications of Microalgal Biotechnology for Disease Control in Aquaculture

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Abstract: Aquaculture industries, and in particular the farming of fish and crustaceans, are major contributors to the economy of many countries and an increasingly important component in global food supply. However, the severe impact of aquatic microbial diseases on production performance remains a challenge to these industries. This article considers the potential applications of microalgal technology in the control of such diseases. At the simplest level, microalgae offer health-promoting benefits as a nutritional supplement in feed meal because of their [...]


Dietary organic acids for farmed shrimp and fish

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Organic acids supplement in diets have recently been applied very common in aquaculture, because their benefits on the growth performance, nutrient utilization, immune response and disease resistance of farmed aquatic animals. Organic acids have a specific antimicrobial activity, which is pH dependent. Organic acids improve protein and energy digestibilities by their impact on the gastrointestinal microflora and reducing microbial competition, thus farmed shrimp/fish fed organic acid diet has significantly higher survival and growth. Furthermore, the use of formic acid is highly [...]


Use of formic acid to control Vibriosis in shrimp aquaculture

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Abstract Luminous Vibriosis is a shrimp disease that causes major economic losses in shrimp industry as a result of massive shrimp kills due to bacterial infection caused by Vibrio species. Use of antibiotics to control Vibrio in shrimp aquaculture is not allowed in the United States and so it is necessary to develop an alternative pathogen control method for shrimp production. Short-chain fatty acids have been used as food preservatives for a long time. Organic acids are commonly added in feeds in animal production, [...]


Importance of Feed Enzymes for Shrimp and Fish in Sustainable Aquaculture

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Feeding enzymes to shrimps and fishes is one of the major nutritional advances in the aquaculture sector since last few years. Exogenous enzymes are now extensively used throughout the world as additives in animal diets. Also, supplementation with enzymes can help to eliminate the effects of antinutritional factors and improve the utilization of dietary energy and amino acids, resulting in improved performance of fish/shrimps (Farhangi and Carter, 2007; Lin et al., 2007; Soltan, 2009). The primary purpose of enzyme application [...]


Phytoplankton a crucial component of aquaculture pond ecosystems

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Proper management critical for successful production Blue-green algae will often float to the pond surface and form scums that absorb heat and can elevate water temperatures. Ponds typically contain an abundance of phytoplankton. These organisms play an important role in pond ecology and influence water quality. Although phytoplankton usually are beneficial, under some conditions, they can be quite problematic in fish and shrimp production. Phytoplanktonic algae consist of thousands of species distributed primarily among the phyla Pyrrophyta, Euglenophyta, Chlorophyta, Heterokontophyta and Cyanophyta. [...]


Zooplankton and Phytoplankton

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Zooplankton Zooplanktons are planktonic animals that range in size from microscopic rotifers to macroscopic jellyfish. The distribution of zooplankton is governed by salinity, temperature and food availability in the environment. The smallest zooplankton can be characterized as recyclers of water-column nutrients and often are closely tied to measures of nutrient enrichment. Larger Zooplanktons are important food for forage fish species and larval stages of all fish. They also link the primary producers (phytoplankton) with larger or higher trophic-level organisms. The zooplankton community [...]


Insect meals: novel protein, fat sources for farmed shrimp

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Feeding insects to aquaculture species can be readily adapted. As potential ingredients in aquafeed, various insects offer high levels of protein and fats. “Garbage in, garbage out.” This long-standing cliché in the computer world is just as true in feed formulation: Poor-quality ingredients can’t become good-quality ingredients, no matter what one tries to do with them. Quality protein is essential for the healthy growth of any omnivorous or carnivorous aquaculture species. Insect meals seem to fill this need, and their mass-scale production [...]


Functional feeds and aquaculture nutrition: building a concept

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A relevant challenge in shrimp nutrition within the following years, as stated by Tacon et al., (2000), will be the necessity for the research on the additional nutritional requirements for shrimp reproduction and shrimp optimal health and resistance to diseases. However, this author does not include the research and the use of functional feeds as a future challenge in the nutrition of the culture marine aquatic species. Though research in the nutrition of marine cultures is largely currently based on [...]


Role of Vitamin C & Multivitamin Diets for Enhacement of Immunity, Growth & Biological Performance in Shrimps/Fish

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Good nutrition in aquaculture systems is essential to economically produce a healthy and high quality product, writes Mr Prakash Chandra Behera, Technical Manager (Aqua Division), PVS Group, India. Vitamins are essential nutrients found in foods. They perform specific and vital functions in a variety of body systems and these are crucial for maintaining optimal health. Vitamins are a heterogeneous group of organic compounds essential for the growth and maintenance of aquatic animal life. The majority of vitamins are not synthesized [...]