"Boosting Immunity: Essential Strategies for Veterinary Health"

 Define :- It is define as the ability of animal body that defend against harmful microorganisms, such as bacteria, viruses, parasites, and fungi etc.

         Classification of immunity 

1. Inherited / Innate immunity
2. Acquired immunity 

Inherited immunity :- It is received by birth. It includes physical barriers like the skin and mucous membranes, as well as various cells and proteins that quickly respond to infections.

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 It is of three types:- 

1. Species immunity :- Some species are immune against some diseases, known as species Immunity. Eg- Fowls are resistant to tetanus and anthrax.
2. Breed immunity :- Like species some breeds are also resistance to some diseases. Eg- Indian cattles breed are more resistant than the exotic cattles breed to FMD and theileriosis.
3. Individual immunity :- Some individuals animals show resistance against certain disease.

• Acquired immunity :- It is a type of immunity which is acquired by animal after birth. 

It is of two types :-

Active immunity :- It is that type of immunity which is developed in the animals body by itself against  infection or any antigen. It may be natural or artificial. 

Artificial active immunity can be produced by injecting vaccines. 
Natural active immunity can be produced after any attack of infectious disease for short or long period.

2. Passive immunity :- It is that type of immunity which is borrowed by the animal from outside sources. It may be natural or artificial.

Natural passive immunity can be developed by feeding colostrum.

Artificial passive immunity can be produced in diseased animals by infecting antiserum.

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