title: Changes in the nucleic acid and protein content of the Japanese quail during postnatal development.
abstract: A study of growth activity in the Japanese quail showed the rate of growth to be the highest, in both sexes, between the ages of 5 and 20 days. Positive allometry was manifested in skeletal muscle development, negative allometry or isometry in the case of the liver and heart. The protein/P DNA ratio rose progressively with age in all the given tissues and attained the maximum prior to sexual maturation. The P RNA/P DNA ratio rose markedly in all the tissues after only a few days and remained high throughout the whole period of development. Growth dynamics in the both sexes followed the same course; the only exception were proteosynthesis indicators, which attained higher values in females, in correlation to their greater body weight.
mesh_terms: D000818:Animals; D001835:Body Weight; D003370:Coturnix / Q000254:growth & development* / Q000378:metabolism; D004247:DNA / Q000378:metabolism; D005260:Female; D008099:Liver / Q000378:metabolism; D008297:Male; D009132:Muscles / Q000378:metabolism; D009206:Myocardium / Q000378:metabolism; D009696:Nucleic Acids / Q000378:metabolism*; D009929:Organ Size; D011506:Proteins / Q000378:metabolism*; D011784:Quail / Q000254:growth & development*; D012313:RNA / Q000378:metabolism
chemical_list: D009696:Nucleic Acids; D011506:Proteins; D012313:RNA; D004247:DNA