Prevention and control of swine disease after flood

The recent flood in Hebei may cause pig farms to be submerged or even washed out, which not only makes pig farmers suffer direct economic losses, but also speeds up the spread and spread of pathogens, which can easily lead to the epidemic of some natural foci. As farmers, we should pay attention to the occurrence trend of pig disease after the flood, do a good job in the comprehensive prevention and control of pig disease, and reduce the secondary disasters.

? I. strengthen the drainage and disinfection of pig houses

? 1. Drainage? At present, many small pig farms are built on hillsides, or many are built in relatively low-lying pastoral areas, so drainage will be a very difficult problem, especially when a rainstorm comes, a large amount of water is often unable to be discharged within a short period of time, and the water flows into the pig farms. will cause pigs to suffer. Therefore, in order to avoid such a situation, the drains around the piggery must be cleaned or dug in time, the threshold of the piggery can be raised in case of emergency, and for the relatively low-lying piggery, the method of emergency transfer can be used to transfer the pigs.

two。 How to deal with dead or drowned pigs? In the course of the disaster, many pigs were washed away by the water, fell ill, and a large number of deaths occurred. There are a large number of pathogenic microorganisms in the dead pig, if it is not treated innocuously in time, the bacteria will spread everywhere with the current and air, which not only pollutes the environment, but also easily leads to the epidemic of human and pig disease. The simplest and most effective way to dispose of dead pigs is to bury them deeply. Deep burial should choose Gaogang area, pit depth of more than 2 meters, after the body into the pit, sprinkled with lime or disinfectant to cover thick soil. Where there are conditions, it can be burned.

? 3. After disinfection stagnant water is discharged, disinfection should be strengthened. In addition to physical and biological disinfection methods such as cleaning, scouring, scrubbing, solarization, incineration, accumulation and fermentation, chemical disinfection is the most widely used.

3.1. 10% to 20% lime water made of fresh lime can be used to disinfect sites, paint shed walls, piles, etc. The preparation method of lime water is as follows: 1 kg quicklime plus 4 kg 9 kg water. First put the quicklime in the bucket, add a small amount of water to dissolve it, and then add enough water. Limewater is now in use, but it will fail if it is kept for too long.

3.2. Plant ash water is suitable for disinfecting sheds, utensils and instruments. Preparation method of plant ash water: add 2-3 kg fresh plant ash to 10 kg water, heat and boil (or soak in hot water for 3 days and nights), and use after the plant ash water is clarified.

3.3.2% caustic soda solution can be used to disinfect sheds, sites, appliances and vehicles. 3% to 5% caustic soda solution can disinfect the ground contaminated by anthrax spores. When disinfecting the shed, drive (lead) the livestock out of the pen, after half a day, rinse the sterilized feed trough, sink, cement floor or wooden floor with water, and then let the livestock into the cage.

3.4.2% peracetic acid solution, which can be sprayed to disinfect sheds, sites, walls, appliances, vehicles, ships, feces, etc.

3.5. Compound phenol 100: 300 times solution is suitable for disinfecting livestock barn, site, dirt and so on.

3.6. Spraying, flushing and impregnating with 3000-fold diluent can disinfect the barn, environment, machinery, utensils, eggs and so on. 2000-fold solution of Baidu can be used for emergency prevention of disinfection of livestock and poultry houses. The dilution of 10000 to 20000 times can prevent water storage towers and drinking fountains from being blocked by dirt, kill microorganisms, remove algae, deodorize and improve water quality.

? 4. Killing mosquitoes and flies

High humidity and high temperature, sewage flowing everywhere, the most likely to breed mosquitoes, eperythrozoonosis, toxoplasmosis, circovirus are often caused by mosquito bites. The weeds around the piggery should be cut as far as possible, the gutters should be cleaned regularly, and the sanitary conditions of the barracks should be done well. Do not throw medicine bottles and bags that are usually used up everywhere, but should centrally arrange for destruction or burial. In addition, adding cypromazine to the feed can effectively remove mosquito eggs and reduce mosquito breeding.

? II. Do a good job of immunization and quarantine supervision

The flood disaster causes the pathogen to spread massively, and the epidemic disease is very easy to spread. Some epidemic diseases that do not occur or rarely occur for many years, such as porcine erysipelas, swine lung disease, classical swine fever, blue ear disease, streptococci and so on, may also occur. In addition, there is an urgent need to fill fences after the disaster, and there is a general shortage of young pigs, so they need to be transferred to other places, and if they are not careful, they will bring in the epidemic disease. Therefore, quarantine inspection is particularly important. This work is the key to cut off the spread of the epidemic source and prevent the spread and epidemic of the epidemic, and we must do a good job.

? 3. Prevention of stress

High temperature and humidity after rain, great stress on sows and boars, sows are easy to be restless, trample to death piglets, and affect their motherhood, resulting in a lack of milk. For boars, it is difficult to dissipate heat because of the high temperature for a long time, and the death of sperm is inevitable. Ammonia is easy to be produced in high temperature and humidity weather. Ammonia can not only cause restlessness in pigs, but also easily destroy respiratory mucosa and cause respiratory diseases. This kind of weather wet curtain has little cooling effect, and the fan, especially the ceiling fan, is more effective, but the ceiling fan must be kept open for a long time to prevent the piglet from catching cold, and pay attention to driving the pig into the incubator to rest. At the same time, cleaning the barracks in time, flushing pig manure and so on, reducing the production of ammonia is the key.

? Fourth, prevent feed mildew

Continuous torrential rain, high humidity and high temperature are the suitable environment for mold breeding.

Now the price of feed is expensive, if we can not do a good job of prevention, it will lead to feed mildew, pigs eat problems, and cause a great waste of resources. The prevention of feed mildew is an old problem, how to reduce or avoid mildew, the key lies in people. In order to save time, many people mix the feed they want to use in two or three days at one time, and then pile it in a corner and use it slowly. This has great drawbacks. The feed exposed to the air for a long time can easily become a hotbed for mold growth. Very often, the moldy feed can not be judged by the naked eye, but it is very serious when the mildew can be seen by the naked eye. Therefore, we must try to prevent feed mildew, how much feed, open how much packaging, for the whole package of premix or corn, soybean meal, etc., do not go to Kaifeng as far as possible; avoid workers' showers, toilets or gutters near the feed room; feed room floor as far as possible to take cement and floor tiles, because laterite and other floors are easy to absorb moisture; use bricks, sticks and other heightened matting. Add a mildew remover to the moldy feed.