Fork tails, ecological disease prevention and control technology demonstration

I. Main Indicators and Implementation Content of the Project 1. Construction of ecological breeding conditions (1) Oxygen-enhanced facilities (2) Cultivation of beneficial algae (3) Activation and improvement of pond sediment (4) Development of ecological feed 2. Controllable culture Water quality regulation 1) Microecological preparations for the removal of ammonium nitrogen and nitrites 2) Cultivation of algae phases in the early period of the pond 3) Application of ecotyped bottom reform 4) Supplementation of dissolved oxygen 3. Controllable ecological disease prevention techniques 1 ) Improvement of immune immunity of fishes A. Application of herbal medicine baits b. Development of microbial ecological feeds C. Application of eco-type disease prevention drugs D. Cultivation of stable water quality 4. Technical indicators 1) The incidence of fish dropped to 10% The following 2) the survival rate of fish 90% 3) Output 1000 - 1500 kg / acre (fish) Second, the implementation of 1, the fish control of ecological farming conditions 2, the fish main multi-species and more specifications collocation technology 3 , Controllable aquaculture application of micro-ecological agents and demonstration and promotion of eco-type drugs 4, the application and promotion of ecological fish feed 5, fish and Chinese herbal medicine application and promotion of immune drugs Third, the project basis 1, the spotted tail? As the meat is delicate, delicious, no intermuscular, Yang rich, deeply domestic and foreign consumers. The Ministry of Agriculture listed catfish tails as one of the three major freshwater species for industrial development, and it has also become a major breeding species for freshwater exports. With the rapid development of China's catfish and aquaculture industry, the scale of farming has become larger and larger, the scale of intensive and high-density farming has been expanding, and the entire industry has embarked on the fast track of development. However, the problems faced by the disease in the breeding process are more difficult to solve. This requires our farmers to establish a correct culture concept of “prevention of disease” and “treatment”, and use the prevention and control techniques of ecological breeding diseases to reduce the incidence of fish to less than 10%. 2. Using microecological agents, the water quality regulation mechanism in the aquaculture environment will achieve disease prevention. When the fish is in a healthy state, there is also a relatively stable dynamic balance between microbial flora in the external and internal environments. Normal flora forms the first line of defense against the invasion of pathogenic bacteria. The reasonable coexistence of this condition is also affected by the eco-environmental physicochemical factors and pathogenic factors. Under the normal state, fish, microbes and the ecological environment constitute a dynamic balance. In a certain range, this balance is relatively stable. In the case that the density of external pathogens reaches or exceeds the normal value, the fish will not be affected. However, when the ecological environment is mutated or the water quality is contaminated, the normal microecological balance is destroyed, pathogenic bacteria are activated and multiply and secrete toxins or antibiotics, destroying the ecological environment of the microbial flora in and outside the fish. balance. As a result, fish are attacked by pathogenic bacteria. Therefore, the imbalance of microbial flora in water is the main cause of fish diseases. Microecological preparations have colonization, exclusion, and reproduction in vivo, and viable bacteria in ecological preparations are members of the natural micro-ecological flora that can antagonize unnatural microorganisms in the natural ecosystem after entering the habitat. Action, thereby inhibiting the growth of harmful microorganisms. Microecological preparations can stimulate the growth of intestinal immune cells, that is, increase local immune antibodies, enhance the body's resistance to diseases, and adjust the internal environment through "righting and eliminating evils", which can be used for many diseases (such as digestive system, urinary system, nervous system, endocrine). The system, respiratory system, circulatory system and infection play a therapeutic and preventive role. III. Significance and necessity of the project: 1. The development of disease prevention and control technology for ecological farming is necessary to overcome the inadequacies of China's fishery development, develop market fisheries, benefit fisheries, and create modern fisheries. With the intensive and high-density culture, it is difficult to solve the problem of disease prevention in the breeding process. Starting with prevention and control to solve the disease, the survival rate of fish can reach more than 90%. 2. According to the principle of ecological balance, a variety of microorganisms are used to improve water quality, form a stable microecological balance, and control the occurrence of diseases. The high feeding rate of aquaculture will inevitably lead to the deterioration of the aquaculture ecosystem, the production of harmful substances such as ammonia nitrogen, nitrites, and hydrogen sulfide, and the deterioration of the aquaculture water bodies such as water and soil turbidity and lack of oxygen. These are the causes of increased disease in farmed animals. The important limiting factors for the development of aquaculture are how we can increase feed utilization, enhance the resistance of farmed animals to diseases, and prevent and quickly repair the deterioration of the pond's small ecosystem. This is an imminent requirement and driving force. 3. Implement the principle of comprehensive prevention. To reduce the use of fishery medicines and effectively control the occurrence of diseases, we must first implement the principle of comprehensive prevention. Because most of the fishery drugs have certain toxicity, on the one hand, they will directly affect the physiology and life of farmed animals. On the other hand, they may kill the beneficial microorganisms in water bodies and sediments and disrupt the ecological balance of water bodies. If there are a large number of plankton in existence, Plankton can also be killed and rotted and decomposed, causing a sudden deterioration of water quality, and an accident of death from the entire pool may occur. Therefore, taking effective measures to prevent the occurrence and development of the disease, thereby minimizing the amount of medication used, is of special significance in aquaculture. 4, the use of micro-organisms on intestinal colony regulation, improve the body immunity, reduce drug use, maintain environmental ecological balance, control of disease. Necessity: There are many problems in the breeding process. (1) Drug abuse. Users of fishery drugs ignore the conditions of use of the drug, the scope of application and the pre-harvest withdrawal period requirements, as well as aquatic product drug residues exceeded. Some applicators arbitrarily increase the dose or drug concentration, induced the emergence of drug-resistant strains after long-term use, resulting in a decrease in the efficacy of drugs, and eventually leading to a vicious cycle of more extensive drug use. (2) lack of research data on drug residues and toxicity. All drugs have certain toxicity. If drugs are used improperly, they will not only prevent disease, but will also produce many poisonous and side effects. Moreover, the remaining drugs will pollute the culture environment and cause the normal ecosystem in the farming environment to be out of balance. (4) The diagnosis is incorrect, medication is not symptomatic, and compatibility is wrong. Because it cannot be correctly diagnosed, it cannot be used as a symptomatic drug, which can neither achieve therapeutic effect, but also waste drugs. At the same time, it delays the timing of treatment, and the result will inevitably result in loss of breeding production. In addition, due to lack of understanding of pharmacology, when a variety of drugs are used in combination, due to inaccurate compatibility, the efficacy of the drug disappears or phytotoxicity occurs from time to time. Light "defense" re-"governance." Some breeding units or farmers do not pay enough attention to disease prevention and do not fully recognize the importance of prevention. Once an outbreak occurs, it cannot be rationally and scientifically used. As a result, the disease can not be controlled after the occurrence of the disease, resulting in a chaotic situation in which drug use and drug administration are chaotic. (5) In aquaculture, the animals are highly individualized and not only are the animals susceptible to disease, easy to spread, but also have to be protected; in terms of the animal's external environment, there is also a problem of ecological balance of the waters. The ability to use the ecologically controllable ecological farming technology of microecological agents to develop quality, high-efficiency, environmental protection, and pollution-free aquaculture is a major research topic. Vigorously develop high-quality, high-efficiency, environmental protection, and pollution-free aquatic product breeding.

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