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Inorganic Sulfate and Fish Solubles in Commercial Laying Hen Diets

Department of Dairy and Poultry Sciences, University of Florida, Gainesville, FL 32611-0930; Phone: (352) 392-1932; FAX: (352) 392-3047

Correspondence: R. H. Harms

Three experiments were conducted to evaluate the possible benefits of using inorganic sulfate or fish solubles in laying hen diets. In Experiment 1, a corn-soybean meal basal diet was fed with and without supplemental methionine (Met) and inorganic sulfate (Dynamate). In Experiment 2, fish solubles and/or sodium sulfate were added to a commercial type laying hen diet fed to young hens during hot weather. In Experiment 3, various levels of Met were fed with or without either Cystine (Cys) or sulfate. A response from sulfate was observed when hens received a diet containing less TSAA than their requirement. No response was observed from the addition of sodium sulfate when the diet contained adequate TSAA.

Key Words: Amino acid requirement • commercial laying hen • egg content • fish solubles • inorganic sulfate • sulfur • sulfur amino acid