Date of this Version
Mussehl, F. E. (1943). Effect of manganese and iodine additions in a specific ration for laying hens (University of Nebraska Agricultural Experiment Station Circular No. 76)
This preliminary experiment does not answer all of the questions that are presented about manganese and iodine requirements. It can only be taken to indicate that for a typical situation with a typical ration of the type that many poultry producers use, there was no satisfactory evidence that egg production, hatchability and the viability of the hens was limited by manganese and iodine in the ration.