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Three experiments were conducted to compare performance of force rested hens when fed diets with either 8.6 or 16.2% protein during the resting period. Hisex White hens were used in Experiment 1 and Hy-Line W-36 hens were used in Experiments 2 and 3. They had been in production for approximately 10 months. Hens fed the diet with 16.2% protein returned to production significantly sooner and, as a result, laid significantly more eggs. However, after peak egg production, body weight, egg weight or specific gravity were not significantly different for the two treatments.
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R.H. Harms (1983) studied this question.
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