Answer ( 1 )


    There are two methods that are responsible for the entry of salmonella into eggs. The methods are as follows:

    Direct method:

    This is the common transmission method for entry.  In this method, the mother hen is responsible for the entry of salmonella into eggs. Mother hen gets the infection from the contaminated feces.  Contaminated feces transmit the bacteria into a healthy hen. Bacteria cause the reproductive tract infection of the layers. These species cause severe infection in ovaries of a hen. If hen ovaries are infected by salmonella, bacteria get chance to enter into the eggs.  Ovaries transmit bacteria into the egg.

    Indirect method:

    Environment contaminated with fecal material is responsible for the contamination of eggs with bacteria. In this method, there is no mother hen involvement, and the egg is contaminated by the environment. Bacteria penetrate into the eggshell and get a chance to enter into the eggs. The egg with either weak or break eggshell is more prone to contamination with bacteria.

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