Prevention and treatment of duck infectious serositis
[preventive measures] (1) strengthen feeding management to avoid excessive density and crowding of ducks; all ducks should enter and leave the empty house for 2 or 4 weeks; bedding should be kept dry as far as possible. (2) the vaccine for immune prevention of this disease has been used to prevent the disease and the effect is good. The inactivated formalin vaccine was made from strains of different serotypes. The ducklings were immunized once at the age of 2 and 3 weeks respectively, which could be maintained until the age of 7 weeks, but the above methods needed to use the vaccine twice, so it was not easy to popularize and apply in the field. The mixed inactivated vaccine of Escherichia coli and Riemerella anatipestifer was also developed. The results showed that it could significantly reduce the death rate than the inactivated vaccine of Riemerella anatipestifer alone. In recent years, attenuated live vaccines including serotypes 1, 2 and 5 have been successfully developed in the United States. the vaccine can produce obvious protective effect when 1-day-old ducklings are immunized with aerosol or drinking water. In China, China Agricultural University, South China Agricultural University, Sichuan Agricultural University and Guangdong Poultry Science Research Institute have done a lot of effective research on the prevention and control of the disease in recent years, and the inactivated vaccine has been widely used in a large scale. the immune effect is good. According to the characteristics of short feeding cycle of commercial ducks, Cheng Anchun of the Poultry Disease Prevention and Research Center of Sichuan Agricultural University developed "duck infectious paddle inflammation propolis compound adjuvant inactivated vaccine" and "duck infectious paddle inflammation-duckling Escherichia coli multivalent propolis compound adjuvant inactivated vaccine". The latter is mainly made according to the characteristics of the disease and duck Escherichia coli. After trial, it overcomes the disadvantage of slow immunity produced by oil emulsion vaccine, and can resist the attack of virulent virus on the fifth day.
[treatment plan] the following methods are introduced for on-the-spot prevention and treatment: (1) Gentamicin is injected intramuscularly with 4000 × 8000 units per kilogram of body weight, twice a day for 2 days. (2) Ligomycin was mixed in the proportion of 0.0044% of the active components of the drug for 3-5 days. (3) compound Dianjing was mixed in the proportion of 0.04%, and 4-6 days was a course of treatment. (4) 5000 ~ 10 000 units of penicillin and streptomycin in ducklings and 40 000 ~ 80 000 units in young ducklings were injected intramuscularly.
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Beware of vitamin b deficiency in pigs in winter
Symptoms: vitamin B2 (riboflavin) deficiency, growth retardation, vomiting, skin rash, hair removal and so on. When vitamin B3 (pantothenic acid) is deficient, diseased pigs have poor appetite, poor growth, dysentery, cough, hair loss, movement disorders, especially the "goose step"-like movement posture. Vitamin PP (nicotinic acid) deficiency, diseased pig appetite, weight loss, severe dysentery, skin cracking, covered with black crusts, neurological disorders, anemia. Prevention and treatment: when preparing pig diets, pay attention to the adequate supply of bran and green rich in vitamin B
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Introduction to the causes and conditioning methods of anorexia in pigs
First, to add a little bit of spicy pigs with loss of appetite, feeding pepper and chili is very effective. Because pepper and pepper contain pungent flavor and aroma, and irritating, pig food can increase gastrointestinal secretions, thus accelerating gastrointestinal peristalsis and improving digestion. In particular, adding a little pepper to the feed of lactating sows can not only increase the feed intake of sows, but also reduce the incidence of piglets and promote early weaning. Second, feed a little more sweet to add the right amount of saccharin to the pig feed, fattening pigs like to eat, fat and strong after eating, lactating sows prefer
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