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Dołączył: 13 Gru 2010
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 Wysłany: Wto 21:53, 08 Lut 2011 Temat postu: Aquatic animal disease prevention measures on Refl |
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Aquatic animal disease prevention measures on Reflections (I)
Style, or Through immunization against vaccine-preventable diseases of aquatic animals, domestic and foreign research results have been proved to be effective, but also has good application prospects. However, the vaccine is highly specific, in theory, a vaccine can only prevent a disease, and many kinds of aquatic animal diseases, diseases of aquatic animals are relying on each of the corresponding vaccine inoculation to prevent, at least for now or impossible. And 1 species of aquatic animal inoculation or 2 kinds of vaccines, but also difficult to prevent in their culture that may occur during other diseases. In addition, aquatic animals living in water,[link widoczny dla zalogowanych], it is difficult under the regular immunization program needs to catch up and then the implementation of several immunological benefits. Therefore, hazard may be a variety of diseases of aquatic animals, completely rely on vaccination to prevent the desired effect of aquatic animal diseases, is more difficult to execute. Drug prevention of aquatic animal diseases are preventable ecological prevention and immune complement and enhance aquaculture industry is also frequently used measures. Types of fishery drugs more available, including disinfectants, pesticides flooding, water quality (sediment) improvers, antibacterial drugs, herbs and other 5 categories,[link widoczny dla zalogowanych], up to l00 variety of fishery drugs. Although many types of fishery drugs, but suitable for aquatic animal disease prevention drugs is very limited. First of all, antibiotics are not as aquatic animal disease prevention drugs. It is an evil to both the inhibitory or bactericidal antibiotics are needed to reach a certain concentration, can show its role can not be achieved when the drug concentration inhibiting, bactericidal effects, can easily lead to pathogen resistance. Fishing about antibiotic drugs raise any promotional materials: 43O070) grams, half the dose to prevent Second, drugs are not killing animals for aquaculture disease prevention drugs. This is because the vast majority of aquaculture drugs are used by the pesticide pesticides has come from the way the insecticide use of drugs mainly by Quanchiposa, many times in Aquaculture pesticide spill easily lead to water and drug contamination of aquatic animals. In addition, on the basis of prevention of drug use pesticides is not clear, there is described in promotional materials: Some people think that if the body was found from the parasites of aquatic animals should use insect drugs, because The problem is carrying the body of any parasites of aquatic animals is a normal, in any season, any body of water, aquatic animals of any system of checks parasites are more or less can check out the parasites (parasites of aquatic animals are checked insect experienced people, it is easy from any body found a variety of aquatic animal parasites), if the body is outside the check in aquatic animal parasites as the decision to use insecticides to the standard drugs, it may need in aquaculture the process of killing the use of drugs every day. The need for water in a culture of drug use insecticidal insecticide,[link widoczny dla zalogowanych], mainly based on the decision parasite infection intensity,[link widoczny dla zalogowanych], parasite intensity reached only on the health of aquatic animals can pose a threat to the premise, is the need to use insecticidal drugs . Third, some people advocate for the probiotics can improve the breeding quality (sediment) of the problems. In fact, whether or Bacillus bacteria, but also require specific living conditions of the bacteria only, with thousands of other species of bacteria, only to meet the needs of their environment, physiological characteristics of normal reproduction and growth in order to its limited role to play. Different places in our mode of implementation of aquaculture, methods, breeds and specifications, the use of the composition of feed and fertilizer were different types, these differences will inevitably lead to environmental factors in breeding ponds of water do not dry difference million. Probiotics are not any environmental conditions vary in the pond environment to play the same physiological effect. On the contrary, if such a spill of probiotics in the pond at random,[link widoczny dla zalogowanych], there will be inherent in these ponds may lead to the change in microbial community structure, and even caused the disappearance of the pond microbial community diversity, which is very harmful. (Continued)
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