Comparative biological and biochemical studies in hybrid chicks

3. Vaccination with inactivated newcastle disease vaccine and its effect on serum protein concentrations

D. S. P. Patterson Central Veterinary Laboratory, Weybridge, Surrey

D. Sweasey Central Veterinary Laboratory, Weybridge, Surrey

C. Nancy Hebert Central Veterinary Laboratory, Weybridge, Surrey

R. B. A. Carnaghan Central Veterinary Laboratory, Weybridge, Surrey

Synopsis

The potency of an inactivated Newcastle disease vaccine containing a number of strains of virus (vaccine 1) was greater in 28‐day old‐chicks of a hybrid strain (hybrid A) than in Rhode Island Red X Light Sussex chicks. Vaccination with one PD50 of vaccine 1 or vaccine 2 (a single strain vaccine) produced only minor changes in the electro‐phoretically determined serum protein composition in two hybrid strains (A and B) at a time when maximum immunity had developed.

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Comparative biological and biochemical studies in hybrid chicks

3. Vaccination with inactivated newcastle disease vaccine and its effect on serum protein concentrations

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Comparative biological and biochemical studies in hybrid chicks

3. Vaccination with inactivated newcastle disease vaccine and its effect on serum protein concentrations

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