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The Sulfur Balance of the Non-Laying, Molting and Laying Hen¹

One Figure

Department of Agricultural Biochemistry, New Jersey Agricultural Experiment Station, Rutgers University, New Brunswick

1. The sulfur balance of the hen has been determined during low and high egg production and during molting.

2. With an increase in egg production the sulfur balance decreased, becoming negative in most cases when the production rate went above 50%.

3. During the feather loss of the molting period, the sulfur balance decreased and became negative when feather loss was heavy.

4. Sulfur in the droppings, calculated as a percentage of that in the feed, remained high even during severe feather loss or high egg production.

² Present address, Department of Physiological Chemistry, University of Minnesota, Minneapolis.

Manuscript received 20 December 1944.