Chick Growth Factor in Cow Manure. VI. Effect on Hatchability and Storage in Hens

Abstract

An acid precipitate of a water extract of cow manure which was highly potent as a source of the chick growth factor was shown to possess a high potency of the hatchability factor required by hens fed an all-plant-protein diet. This result is in accord with the view that the same dietary factor influences both growth and hatchability.