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Some healthy culture of shrimp dynamic

As spawning broodstock. As pre-spawning broodstock collected blood and tissue biopsies and other very inconvenient, it may impact on the broodstock, usually one-tailed broodstock spawning, the females after spawning spawn for pathogen detection, such as positive, the broodstock production should be abandoned. 2. Environmentally friendly {environmemllyfriendly), bio-security {biosecure),[link widoczny dla zalogowanych], zero-water system of exchange based on the requirements of sustainable development strategy for water pond is proposed to reduce investment, reduce land, water, energy, protein,[link widoczny dla zalogowanych], consumption of genetic diversity requirements, you must create a new water efficient farming system. 1996 Sandfferand ‰; m proposed exchange. Preliminary studies have shown can expect to achieve the following objectives: to carry out a limited intensive land cultivation; do not frequent the Gulf water exchange. Limit the misuse of water; saves energy; prevent the spread of the disease; to prevent the exodus caused by bad genes genetic pollution; bottom sludge and clear the deal, can be used as organic fertilizer sources and soil improved. Backfill can be used again. Environmentally friendly technology is the core of the system water treatment technologies, microbial degradation technology and food control. In recent years, Browdy & Pruder and other viral diseases for shrimp, especially the high incidence of white spot disease occurred Taiwan throat outbreak. In the environmentally friendly system on the basis. Biological protection of shrimp farming proposed a zero exchange water system vision. Its purpose is to prevent spread of pathogens and reduce environmental stress. Of course, such systems have other functions. Traditional water exchange is often brought with water pollutants, pathogens and carry pathogenic organisms. Prone to frequent water exchange dramatic changes in environmental factors. The shrimp produce stress. The system limits the spread of pathogens, changes in environmental factors is relatively stable. Application of environmentally friendly technology preliminary test shows that in certain conditions, shrimp stocking density (100 / m). Can achieve near-zero water exchange ideas, without affecting shrimp growth and yield. The production technology. SPF shrimp, cut vertical transmission of the virus, and biological protection of a zero water exchange system, cut off the horizontal transmission of the virus selected tracks. Rights of the taste system stable C content,[link widoczny dla zalogowanych], the elimination of farming systems - the cutting life. In particular, pathogens and biological carrying the original embroidery, and then re-Topley qualitative and quantitative control of algae,[link widoczny dla zalogowanych], microbial communities. Water recycling within the culture system, little additional water outside the system to prevent the transmission of pathogens outside the system. Can rely on the system single-cell micro-organisms and the ecological functions of algae phase. Meet the needs of some shrimp oxygen and nutrients necessary for biological metabolism and protein degradation resulting in the elimination of ammonia and other harmful substances. Culture system for the cultivation of algae: Chaetoceros single, flat algae, golden algae. Penaeus vannamei,[link widoczny dla zalogowanych], small-scale experiments showed that this production system is economically feasible, the expected value of production parameters: breeding Fangmiao density of 100 ~ 135 / m, each end of the growth rate of shrimp per week was 1.5 -1.6 grams, the survival rate of 70% to 80%. Feed conversion ratio is 1 ~ I. 8, the harvest yield of 1-2 kg / m. 3 Research on the development of clean food diet is the main source of shrimp culture, food quality and management to the bait, is a healthy and sustainable development of aquaculture management of a major aquaculture research. On the one hand and the feed solution to reduce loss of bait, on the other hand should be noted that the ecological functions of shrimp culture system and bacteria, and algae on the role of nutrition in shrimp. Ponds within the natural nutrients, bait, fecal bacteria and algae can be cultured shrimp into the food chain. Bacteria are dispersed with Taiwan bait Branch, a major consumer of shrimp feces. If you can maintain a high magnitude of beneficial bacteria can not only improve water quality. But also can promote the growth of shrimp. However, high protein diet easy to produce high concentrations of ammonia, the substance not only affect the growth performance and will reduce the shrimp's immune function. Experiments have proved that, due to lower protein content of diets can greatly alleviate the body ammonia content of water in a limited water exchange system, the shrimp grow well. Therefore, food quality control should be farmed with the corresponding water system facilities. Limited water exchange system, prawn feed should focus on the following quality: the stability of bait in the water; food style to adapt to the use of shrimp feeding; due to lower protein content and caloric value; focus on nutritional balance of amino acid balance, such as {down, unsaturated fatty acids balance); the use of various additives (such as microbial polysaccharides, vitamins, enzymes, etc.).