For a long time, livestock and poultry farmers generally pay more attention to the hazards of storage insects to storage feeds, but they do not have enough knowledge of the hazards of storage tanks, and their research and prevention are not much. In fact, the hazards of storks are no less than storage insects. Storage worms generally endanger grains and their processed products, by-products, oil and seed cakes, legumes and various dried animal and plant materials. Commonly used in feedstuffs are the genus Folium, Fructus lycii, Fetidae and Prickly urchins, but the most common and endangered ones are coarse calliper, rotted typhoon, elliptical mealworms, etc. They are very small and difficult to see with the naked eye, but they reproduce very much under humid and warm conditions. fast.
Harm in feed
Feeds that are harmed by earthworms reduce the nutritive value of feeds. Carbohydrates are converted into carbon dioxide and water through metabolism. While reducing feed energy, they also increase the water content of feeds, together with the production of fleas and excrement. Pollution, etc., often cause mildew, deterioration, agglomeration, discoloration, and even malodor and bitterness in the feed in the short term. The moisture content of protein in feed also changes, and the nitrogen content also decreases. Due to the large amount of fleas in the feed, livestock and poultry kept tend to have poor growth and development, which can seriously affect the performance of livestock and poultry production performance, and sometimes cause abortions, diarrhea, and rash of livestock, affecting the reproduction rate of livestock.
Inspection
Checking the feed with a magnifier, if you can find a few fleas, it means that the feed has been seriously damaged. A group of substances that appeared to be dusty, as a result of a large amount of flaws, finally slowly spread out. The feed can also be piled into cones for inspection. Due to the activity of the apes, the cones can collapse and eventually completely flatten. However, the above methods can only use feeds that are seriously endangered by ticks. It is harmful for livestock and poultry to eat this feed. To be able to detect a small amount of ticks, professional technicians are required to use floatation techniques for identification.
Prevention of Harmful Diseases in Feed
Moist and warm conditions are conducive to growth and development of apes. Therefore, warehouses, tanks, tanks, and tanks for storing feed should be kept dry and well ventilated. The cycle of storage should be short, so as to reduce the breeding time of alfalfa and the feed absorb moisture, and do not put fresh feed on the old feed. . For empty bins, cylinders, tanks, cylinders, etc., they must be cleaned before putting in new feeds, so that they can be noodles, leaving no residue, and the residues that need to be removed must be burned in a concentrated manner. If serious damage occurs, lindane can be used. Malathion is sprayed and disinfected according to a 1:3 mixture (usual dose of 2.5:7.5 ppm). The empty hopper can also be used as a phosphonium miticide, but acaricides are highly effective and highly toxic compounds and cannot be used directly. In food, feed, etc. After the agent is dried, feed it again. After the feed has been used up, old bags, bags, etc., are present on the surface and crevices, and must be cleaned up. If there are serious defects, it can also be controlled by lindane and malathion mixtures. In the feed mills, the newly processed feed contains generally very few feedstuffs, but in its workshops, warehouse walls, floors, roofs, corners of the feed dust and leftovers, etc., it is easy to breed ticks, over time. There will be a thick layer of earthworm residue, which is an important source of infection for newly processed feeds. It may cause feedstuffs to infect feedstuffs without leaving the factory. Therefore, the feed mill should clean it at least once every other week. When the damage is serious, we must also pay attention to the disinfestation process. Separately store the newly processed feed and the unsold old feed. In addition, we can also use the method of fumigation in the prevention and treatment of apes. Since there are eggs in the life history of the aphid, and the resting period and dormancy period of the ape, there is a strong endurance to the fumigant. It is necessary to eradicate the stored grain and feed. The scorpion in the other, need to adopt the method of continuous secondary fumigation. The key to the problem is to find the interval between successive secondary fumigations. The eggs that survived the first fumigation have all hatched into cubs, but before they have developed into lice, a second fumigation takes place. The length of the gap depends on the type of temperature and fleas.
In short, the issue of harm can not be ignored. There are more than 140 species of stored products and fleas currently found in China, and the hazards are continuously studied in order to formulate a relatively complete method of flood prevention and control, minimizing the damage to feedstuffs.
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