In another publication the writer pointed out that five generations of selection for resistance to fowl typhoid in the chicken resulted in a decided decrease in the mortality of the selected stocks. Specifically, the effect of the selection was to decrease the mortality from approximately 85 percent in the unselected parental stock to slightly more than 10 percent in the fifth selected generation.
Proceedings of the Iowa Academy of Science
©1933 Iowa Academy of Science, Inc.
Lambert, W. V.
"A Preliminary Study of the Reaction of Two Disease Resistant Stocks of Chickens after Infection with Their Reciprocal Pathogens,"
Proceedings of the Iowa Academy of Science, 40(1), 231-234.
Available at: https://scholarworks.uni.edu/pias/vol40/iss1/135