The temperature rises and germs breed quickly. Matters needing attention in raising chickens at the beginning of the Beginning of Summer

At the beginning of the Beginning of Summer, it was very suitable for the survival and spread of viruses and bacteria. If farmers' feeding conditions are poor and the level of management is low, chickens are often in a harsh environment, and their disease resistance will be reduced. They are easy to suffer from the following three syndromes, so attention should be paid to prevention and treatment.

Chicken

1. Egg drop syndrome: most of the chickens occur in the peak or rising period of egg production, often in natural conditions such as sudden rise and fall of temperature. The egg production of chickens decreased by about 20%, and some even more than 40%. The symptoms are similar to respiratory syndrome, and the etiology is related to virus infection, improper feed or feeding, stress factors, drug side effects and other factors.

Prevention and treatment measures: except for immunization with egg drop syndrome vaccine and strengthening comprehensive health care, others are similar to the prevention and treatment of respiratory syndrome.

Second, broiler ascites syndrome: most common in 4-5-week-old chickens, the incidence is generally 3%-5%, is one of the most serious diseases of broilers in late spring and early summer. The diseased chicken had a dilated abdomen, purple head and face, dyspnea, and gradually died of exhaustion. Autopsy examination of dead chickens showed that the abdomen was filled with yellowish fluid, pericardial effusion, right heart dilatation, pulmonary congestion and edema. The disease is a multi-cause disease, among which chronic hypoxia, high ammonia concentration, feeding high-energy feed, rapid growth rate, nutritional factors (such as lack of selenium, vitamin C, phosphorus), poisoning (such as salt, drugs) and genetic factors are the main pathogenic factors of the disease.

Prevention and control measures: ① to improve the feeding environment. Pay attention to the hygiene of the chicken house and maximize ventilation at the same time. ② is reasonable with feed. The energy of feed should not be too high, salt should not be excessive, calcium and phosphorus should be balanced, and vitamins should be replenished properly. Early feeding restriction of ③. Broilers can be fed 90% of the normal diet at the age of 2 weeks to 3 weeks. ④ reduces stress reaction and prevents poisoning. In particular, it is necessary to prevent the feeding of sulfonamides that are toxic to the kidney and liver; aminoglycosides and other antibiotics should not be used too much; to prevent feed mildew and deterioration. ⑤ ascites syndrome is often secondary to colibacillosis or chronic respiratory disease. Sensitive drugs can be taken to prevent secondary infection.

Third, fatty liver syndrome: the disease is a nutritional disease caused by the disturbance of fat metabolism in chickens. Suffering from chicken crown and beard pale anemia, gray white sparse feces, head and neck protruding or back bending, falling spasm, and finally emaciated to death.

Prevention and control measures: ① controls the energy level in the diet and increases the protein content by 1% and 2%. ② is supplemented with 100g choline chloride, 50g methionine and 5g multivitamin, vitamin B12 (12mg) and selenium 0.05mg-0.1mg per 100kg feed. ③ chickens were fed with choline chloride 0.1g-0.2g and vitamin E1 mg. At the same time, take 30 grams of Bupleurum, 20 grams of Scutellaria baicalensis, Salvia miltiorrhiza and alisma alisma, 10 grams of Schisandra chinensis, fine grind, and feed them with a dose of 1-2 grams per feather.