Previous studies at our station have shown meat and bone-meal to support sub-standard performance of laying hens when used as the sole protein supplement. In a 1981 report we showed that even when diets were fortified with amino acids to supply the NRG (1977) requirements, performance with meat and bone-meal was poor and increasingly so as protein was reduced from 16 to 14 to 12%. With sunflower meal, performance was not reduced with lower protein levels.
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Department of Animal Science, Agricultural Experiment Station, South Dakota State University
Carlson, C. Wendell and Kashani, Ali B., "Meat And Bonemeal With Soybean Or Sunflower Meals As Protein Supplements For 12% Protein Layer Diets" (1984). South Dakota Poultry Field Day Proceedings and Research Reports, 1984. 2.