Summer heat and humidity, poultry feed is easily contaminated with mycotoxins, mold spores can enter the body through the respiratory tract of poultry, resulting in respiratory disease, and even infected embryos through the eggshell, causing hatching hatchlings that disease. The susceptibility of young birds is the highest in clinical practice, and the most susceptible ones are from 1 to 2 weeks of age. Common acute outbreaks have a mortality of up to 50% to 80%.
First, treatment measures
1. Disinfection of the house. Remove moldy litter in time, rinse the ground and disinfect it with peracetic acid or a hundred toxin spray; contaminated buildings use 42 ml of formaldehyde solution per cubic meter, 21 g of potassium permanganate, fumigation after mixing, or use of Tricorin, According to the ratio of 1:50, spray disinfection.
2. Drug treatment. With nystatin spices, plus 500,000 units per kilogram of feed, once every 5 days, halving the use of the young have a preventive effect; or use clotrimazole mix, 1 g per 100 birds, use for more than 2 weeks. Add 100 ml of Grams net per liter of water for free drinking; or add 0.5 grams of copper sulphate or 5 grams of potassium iodide per litre of drinking water, and use it alternately every 3 days.
3. Adjuvant therapy. Drug treatment, together with the use of doxorubicin, electrolysis multidimensional, in order to maintain the balance of the body to prevent secondary infection; or in the feed and drinking water by adding vitamin E, vitamin C, vitamin B1, vitamin B2, appropriate to increase dietary protein and The content of unsaturated fatty acids.
4. Chinese medicine therapy. For every 100 chickens, 60 grams of Houttuynia cordata, 60 grams of dandelion, 15 grams of Agrimonia, 30 grams of mountain conch, 15 grams of Campanulaceae, drank the juice, or be directly fed for 1 to 2 weeks.
Second, preventive measures
1. Pick clean litter. Choose wheat straw, straw or rice husk with clean appearance and no mildew as litter, or use clean medium grain sand (millet to glutinous grain), wash the sand dust with water repeatedly, dry it, and spread it on a young bed. 10 cm thick, used as a litter (suitable for fire bred brood). The litter should be often sun-turned to prevent mold growth. During the mildew rain season, special care must be taken to use dry litter.
2. Use fresh full feed. Firmly do not feed poorly preserved or mildewed feed. If the moisture content of the feed is above 12%, the relative humidity is 80% to 90%, and the ambient temperature is 10°C to 42°C, the mold will multiply rapidly. Therefore, in the summer, the moisture content and storage conditions of feed ingredients should be well controlled. Smaller farms should minimize the amount of feed storage, and it is best to use them immediately.
3. Do a good job in hygiene. The brood chamber contaminated by mold for a long time contains a large amount of spores in the soil and must be thoroughly cleaned, changed and disinfected. The disinfection can be sprayed with 5% carbolic acid or 0.4% peracetic acid for several hours and then covered with litter. After the young bird enters the brooding room, the temperature difference between day and night should not be too large, and the temperature should be gradually and reasonably cooled. A reasonable ventilation and ventilation equipment should be set up to keep the indoor ventilation dry and clean, and prevent the litter and feed from becoming moldy.
4. Strengthen hatchery management. Eggs, egg banks, hatchery rooms, and incubators should all be kept clean and sterilized with formalin. When the eggs hatch to the seventeenth day, the moldy net tablets are placed in the incubator and fumigated, and 4 to 8 pieces per 100 cubic meters of space can receive good preventive effects.
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