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Spring and summer fish diseases in ponds 6 and Countermeasures

Hydrogen and other toxic substances, damage to water quality, affecting fish growth. 2. Some farmers stocking density is too high one-sided pursuit of high yield, that will be able to obtain high yields of high-density, high efficiency, regardless of their pond conditions, such as how much water, water quality and management level, free to improve density. High density of fish is relatively empty 1 Division reduced chance of cross contamination of fish diseases increases if water exchange is limited, feeding volume, accelerated eutrophication, water quality deterioration in frequency, causing the Pan Tong, a large number of dead fish. 3. Improper fertilization fertilization there is no scientific method. ① decomposition of organic fertilizer applied into the pond without fermentation, or too much fertilizer, or not pay attention to changes in weather and rainy or hot days of fertilization, the results of decomposition of organic matter not only consume large amounts of oxygen and hydrogen sulfide and other toxic gases, water pollution; ② indiscriminate application of inorganic fertilizers, such as: application of ammonium nitrogen fertilizer and lime, if the two applied properly, will result in higher pH values, caused by acute ammonia poisoning. 4. Spring and summer because of food problems caused by fish disease in food production often occurs, there is now the Division 1 title are: ① the fish farmers do not attach importance to food hygiene, such as: live bait is not fresh or purchased feed cluttered, rainy hot season to mildew, rancidity, fish feeding cause liver, gastrointestinal tract damage. ② there is unsatisfactory feed processing factors. ③ feeding in excess, such as: spring climate variability, farmers pay no attention to weather changes. Blindly enhanced feeding, the result would be a waste of food, but also polluted the water. 5. The first is the lack of awareness of disease prevention lax sterilization, that no ill treatment of fish waste. Followed by loss of the inspection, if the farmers awareness of disease prevention is not strong, neglect inspections can not detect abnormalities and take prompt measures to wait until the dead fish had just medication, this time the disease has spread, most of the fish stopped feeding, for internal medicine and words, even if we have a panacea he can not play a role in fish. Second, the Fish Disease Control Measures 1. Spring and summer water quality management to enhance disease prevention, foster good water quality is essential. ① dredging the pond thoroughly disinfected with lime per acre water depth of I m or 150-200 kg per cubic meter of water with 20 to 25 grams of bleaching powder in addition to killing pathogens. ② strict control of water and prevent sewage into the pond, if necessary, to ammonia water, pH value determination for timely adjustment. ③ to observe the weather, the color changes, and the activities of the fish, often filling the new water, open oxygen machine to ensure clean water, adequate dissolved oxygen. ④ The microflora $ 1130, adjust the micro-ecological balance, commonly used in bacteria, photosynthetic bacteria, sulfide bacteria, EM and so on. 2. Determine a reasonable stocking densities in determining stocking density, stocking over the years and develop based on the results is important, in general, fish grew well, feed conversion rate is not higher than the general level, the number of floating head is not too much, fish health than Well, all kinds of fish can reach the standards or to develop targets food fish, indicating that stocking density appropriate. 3. Basal fertilizer use reasonable best organic fertilizer should be applied as early as the 1 Division, representing about 50% of fertilizer throughout the year to 60%, organic fertilizer application, the best fertilizer closed first fermentation, the decomposition into the pond after the Zaishi, In this way,Abercrombie Hoodies, do not pollute the water, but also rapidly absorbed and used by water organisms. Summer heat stop organic fertilizer, inorganic fertilizer to change, as top dressing to use,nike air max, the nature of fertilization when the attention of fertilizer, fertilization take less time and more ways to make the water to 35 cm is appropriate. 4. Strengthen the management of high-quality forage diets of healthy material basis for aquaculture, specifically to do: ① to prevent mildew, deterioration of the feed ingredients, the better the feed quality. ② When using feed additives to note the amount of hormones to control the safe concentration range. ③ In the processing, transportation, food storage to prevent deterioration in the process, once the modification should be addressed promptly, do not put it into the pond, damage to fish health. ④ make scientific feeding programs,uggs bestellen, and timely adjusted according to the actual feeding amount, adhere to 5. Raise awareness of disease prevention is the epidemic season of spring and summer, is imperative to strengthen the awareness of disease prevention, specific measures are: ① strict disinfection and control the number of pathogenic microorganisms in the pool, cut off foreign pathogens into water ways, disinfection can be used quicklime , bleaching powder, chlorine dioxide,moncler doudoune, salt and other chemicals, but also with physical methods of zeolite powder in order to do not pollute the water, but also to eliminate pathogenic microorganisms. ② step up inspections and improve monitoring of the epidemic, we should uphold the Xuntang 2 times every morning and evening, carefully observe the fish feeding and activity, abnormal early action. ③ regularly fed bait,christian louboutin pas cher, such as with garlic, herbs, antibiotics and fed mixed feed in order to enhance their resistance to disease. An agricultural school in Loudi Loudi _000 agriculture a pond fish diseases in the spring and summer season