Effects of different Brooding temperatures on Pullorum Disease. W. L. Mallmann. Vet. Med., Vol. 29, 1934, p. 254.

The author found the loss of chicks from pullorum disease in infected and mixed lots to be six or seven times as high in chicks brooded at 72° F. as in those brooded at 96°. The transmission of the disease from the infected to the uninfected stock was much higher at the unfavorable temperatures of brooding. The information obtained is considered to emphasize the extent to which unfavorable conditions lower the vitality of chicks and render them more susceptible to pullorum disease.