Intra-ovum injection for improving salmonella resistance of newborn poultry and application

Abstract

The invention belongs to the technical field of agricultural animal husbandry production, and particularly relates to an intra-ovum injection for improving the salmonella resistance of newborn poultry and the application of the intra-ovum injection. The technical problem to be solved by the invention is to provide the in-ovum injection which is used for poultry embryos, has small toxic and side effects and no drug residue and is used for preventing newborn poultry from being infected with salmonella and the application of the intra-ovum injection. The intra-ovum injection comprises the following active ingredient: astragalus polysaccharide. The injection provided by the invention can effectively improve the development and maturation speed of immune organs of newborn poultry and improve the capability of resisting salmonella of poultry infected within one week old, and has a better effect of preventing infection of newborn poultry than conventional astragalus drugs.

Description

technical field [0001] The invention belongs to the technical field of agricultural and animal husbandry production, and in particular relates to an in-ovo injection for improving the anti-Salmonella ability of newborn poultry and its application. Background technique [0002] Salmonella is a common highly pathogenic pathogenic microorganism that seriously endangers the health of poultry. It mainly infects young chickens that lack a mature immune system. After infection, the mortality of chickens less than 3 weeks old can reach 40%. Carry germs, form recessive infection, and then lead to residues in poultry meat and egg products. It is very difficult to detect poultry products with residual Salmonella, especially poultry egg products, Salmonella may not remain on the surface of the eggshell, and there will be no Salmonella residues in the egg white due to the presence of bacteria-inhibiting substances, so Salmonella is usually in the egg yolk exists, but the uncertainty of ...

AI Technical Summary

Problems solved by technology

[0004] Conventional treatment of Salmonella infection in chicks is mainly based on antibiotic therapy. However, with the continuous development of the poultry industry, the pathogenic mechanism of Salmonella infection is becoming more and more complex, and the antibiotic resistance of pathogenic bacteria is becoming stronger and stronger. Therefore, the effect of antibiotic treatment alone gradually weakening

Antibiotic treatment of Salmonella will lead to drug residues in poultry and egg products, which will induce adverse reactions after human consumption

Antibiotics will also remain in poultry feces, which will cause environmental pollution after being excreted, causing soil and water antibiotics to exceed the standard

[0005] It is also not feasible to prevent Salmonella infection in chicks with vaccines. First, Salmonella mainly infects chicks with immature immune systems. After vaccination, chicks cannot produce immune responses and antibodies. Therefore the vaccine is less likely to improve chick resistance to Salmonella infection

[0006] At present, traditional Chinese medicine preparations are also used to prevent salmonella infection in chickens. Among them, astragalus extract or astragalus compound traditional Chinese medicine has the greatest potential. Infection within weeks of age and avoidance of morbidity and mortality in chicks

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