Abstract
Summary
Growth depression and tremors were observed in chicks fed 8% of glycine as part of a highly purified diet. The depressed growth rate was not overcome by feeding unusually high levels of nicotinic acid. In addition, a peculiar enlargement of the eyeballs developed which interfered with normal vision and functioning of the nictitating membrane. Eight percent of glycine as the peptide produced no such effect. The action of glycine appeared to be confined to the growing chicken. The feeding of 12% of glycine to hens over an extended period produced no apparent ocular abnormalities.
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