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. Additional Nutritional Requirements For vannamei Due to the present state of the technology the contents of a complete diet ( feed requirements ) are not always sufficient to cover the full nutritional requirements and need to be backed up further in a super intensive shrimp cultivation system. Practical vs scientific considerations. There are a plethora of choices for the commercial eye. Probiotics: General Description Enzymes Complex proteins that cause a specific chemical change in other substances without being changed themselves. Enzymes are delicate dynamos. Delicate because they are destroyed by temperatures over 118 degrees (some by as little as 105 degrees), which means that they may not survive even light steaming. Dynamos because they are powerful biochemical catalysts; they speed burning or building reactions in the body according to need. They are specialized proteins, often with long complicated names ending in -ase.All raw foods contain exactly the right enzymes required to split every last molecule into the basic building blocks of metabolism: Amino acids (from protein), glucose (from complex carbohydrates) and essential fatty acids (from unsaturated vegetable fats). Immune Stimulators The immune system of crustacean is relatively primitive and does not produce antibodies, and their immune responses are not specific in nature. This means that crustaceans, including shrimp, can not be "vaccinated" in the traditional definition. However, there are commercial products that claim to stimulate disease resistance. They are being promoted as innovative management tools to promote shrimp health, by preventing and minimizing the impact of outbreaks of pathogenic bacteria both in hatcheries and during growout. In hatcheries these products can be administered to late mysis-postlarvae by immersion or bath, or by microencapsulation using Artemia. Results reported from field testing indicate that these products may have considerable potential to stimulate non-specific immune responses and improve survival and growth of treated animals, thus enhancing production Antioxidants Pre-biotics Biopeptides Attractants . |
