Composition for resisting duck viral hepatitis, freeze-dried powder, and preparation method and use of freeze-dried powder

Abstract

The invention discloses a composition for resisting duck viral hepatitis, freeze-dried powder, and a preparation method and use of the freeze-dried powder, and belongs to the technical field of veterinary feed additives. The composition comprises, by weight, 92-97 parts of a duck viral hepatitis-resistant yolk antibody and 1-3 parts of a duck viral hepatitis-resistant transfer factor. The freeze-dried powder comprises, by weight, 95-97 parts of the duck viral hepatitis-resistant yolk antibody, 1-2 parts of the duck viral hepatitis-resistant transfer factor, 0.2-0.3 parts of an inactivator, 0.01-0.02 parts of an antiseptic and 2.05-3.6 parts of a heat-resistant freeze-dried protective agent, and has the advantages of low preservation conditions, long preservation time, high antibody titer and good biological activity. Through combined use of the duck viral hepatitis-resistant yolk antibody and the duck viral hepatitis-resistant transfer factor, the freeze-dried powder has effects of preventing and treating duck viral hepatitis, improves duck immunity and survival rate, is convenient for use and has a low cost.

Description

technical field [0001] The invention specifically relates to an anti-duck viral hepatitis composition, an anti-duck viral hepatitis freeze-dried powder, and also relates to a preparation method and application of the freeze-dried powder, belonging to the technical field of animal feed additives. Background technique [0002] Duck occupies a relatively large share in my country's aquaculture industry. The annual slaughter volume is nearly 2 billion, the meat production reaches nearly 3 million tons, and the annual profit reaches more than 3 billion. However, the raging duck disease has brought huge losses to my country's breeding industry. Among them, duck viral hepatitis is one of the most serious diseases that endanger ducklings. [0003] Duck viral hepatitis is referred to as duck hepatitis for short. It mainly harms ducklings under 20 days old. The younger the ducklings are, the higher the mortality rate is. The highest mortality rate can reach 90-95%, and all antibiotics...

AI Technical Summary

Problems solved by technology

[0004] At present, people use vaccines to immunize against duck viral hepatitis. The early effect is better, but multiple vaccinations are required, the operation is troublesome, the cost is high, and it is easy to cause stress reactions in livestock and poultry, and the vaccines have strict requirements for storage conditions. , it needs to be refrigerated at low temperature, and it will be invalid at room temperature for a period of time