The response of broiler breeder chickens to parenteral administration of avirulent Pasteurella multocida

Broiler breeder chickens were exposed to avirulent Pasteurella multocida at 14, 22, and 34 weeks of age either by stick wing 1 to 3 times or subcutaneously 3 times. Fowl pox vaccine was mixed with the first P. multocida exposure in some groups. Exposure did not impair egg production or hatch of fert...

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