Abstract

Chemical components in the magnum of the laying hen’s oviduct were determined at various intervals during the formation of the egg. Magnum protein decreased up to ten hours while RNA decreased from 5 to 10 hours after oviposition. Protein and RNA increased from 10 to 24 hours after oviposition. DNA remained unchanged throughout the 24 hours period of egg formation. RNA/DNA ratio decreased following oviposition for 10 hours and increased from 10 to 24 hours. The increase in RNA/DNA ratios during the 10 to 24 hour period resulted in protein synthesis and protein accumulation in the magnum in preparation for the next ovulation in the cycle.

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