The shrimp in the summer
Asst. Prof. Dr. niti, Angel. Research Center for aquaculture business. Faculty of fisheries, Kasetsart University
Hello to all readers?!?, with shrimp in the first trimester of this year, which is the year that I analyze a very tough shrimp last year because of problems that accumulated over two years. E m s in the country, the Thai has not yet been resolved, succeeded. Whether it's story. Strain the shrimp or shrimp balls, because quality matters, although during the past year. The State sector. But enough to remove the actual access Quantity of the imported varieties, their parents are extremely rare, and most were imported from the same source until it hardly offers a wide range of imported shrimp species. From the statistics of the Department of fisheries found that throughout the year. TrProf. 2556 (2013) imported parents of Pacific white shrimp species 13 times, and parents of Pacific white shrimp imported from abroad, just 12,406. When compared with the quantity of shrimp balls that drop in breeding of farmers last year, throughout the year, with volume up to 56773778,665 — can be considered parents imported varieties, it hardly affects the production of Thai shrimp. Most pet owners must also use the same species of shrimp, parents are faced with the problem of. E m s came along two years ago. I found that the majority of shrimp production quality than the quality of the shrimp during the past year, it is clearly. As a result, many farmers leave the shrimp feed during the past three months, experiencing the white moon and shrimp infected experience symptoms. In all areas across the country and is worried that the final number of shrimp, Thai maikhong Fabricius in this year may be lower than a year ago, nor waste. And to resolve specific about the Pacific white shrimp species remains a problem. Because the data and research during the last two years ago showed a black tiger shrimp experiencing disease em s less than white shrimp (litopenaeus vannamei) It would make the black tiger prawn production volume of this year's Thai has increased over the years, and have the opportunity to produce up to 80,0-100000 tonnes in accordance with the target placed students.
For the big problems of the manufacturing sector, both on the part of black tiger shrimp, white shrimp, and in the summer. I looked at the feast quality shrimp balls are not as good as the original, and still have the problem with higher temperature. 30-32 degrees Celsius. When water temperatures rise, the dissolved oxygen dissolves less. Decreased immunity. At the same time, when the high temperature will cause the salinity of the water to rise and affects groups of bacteria, Vibrio spp., which is a group of diseases that cause bacteria glow. Hepatitis e m s S e m a or some might survive until the shrimp from e m s in the range 40-50 first dates but the last shrimp may need to come up with a white ash with disease, death, disease, bacteria glow again. Shrimp must be released at a rate of less density than the original, and be careful about food quantities, such as eating shrimp. Quantity of food each day, there must be appropriate. And affect behavior, as well as various working mechanisms of the body prawn. When the water temperature is low, slow food will eat shrimp as well as digestion is slower. On the other hand, if a higher water temperature is shrimp to eat faster. Some nutrients could also be absorbed to excrete it was. Data from a study of the aquaculture Business Research Center. I found that if the temperature of the water is 30-32 degrees Celsius. 25 minutes and will eat all up within 75-105 minutes and then excrete all food from the intestine within 140-150 minutes, in this case, if the Fed continues to adjust the quantity of food, shrimp eaten by monitor food in yo alone. And if there are still more and more as it will result in the accumulation of organic matter on the ground even more pond bacteria, Vibrio spp., add more according to shrimp, weak and dying;
.Therefore, feeding guidelines appropriate shrimp this summer, a ceiling should be set of shrimp dishes, shrimp eaten each day. And not to feed each day exceeding the ceiling. And during the party, you should check the value of water quality and water at all times. If it is found that the darker watercolor. The soluble oxygen in the morning or afternoon choton p.a. began to tall more than 8.3 should abstain from food as soon as possible. If there is a quantity of water, for example discharge changes enough to consider changing the water taken in quantities at a 10-20 cm in order to reduce the amount of organic matter in the pond. In cases where there is no water for the change take additional methods may be used for microbial fermentation until the basinlat group are appropriate, splash in some 20-30 liter v.
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