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Biology of the rice rat (Oryzomys palustris natator) in a laboratory environment. VII. Pre-weaning growth of the body.

Authors
  • Park, A W
  • Nowosielski-Slepowron, B J
Type
Published Article
Journal
Acta anatomica
Publication Date
Jan 01, 1975
Volume
91
Issue
4
Pages
500–509
Identifiers
PMID: 1154992
Source
Medline
License
Unknown

Abstract

Body growth using weight and length parameters have been examined following the introduction of the rice rat to laboratory conditions and a history of breeding covering some 15 generations. The pattern of growth shows a characteristic enphasic form which appears to be determined by the interplay of the external environment and the genetic endowment. The external environmental factors include the waxing and waning of the lactational performance of the mother and the intake of solid food, resulting in the first phase being mainly controlled by the maternal environment, the second phase being mainly controlled by a lessening maternal environment + external (solid food) environment + some genetics, the third phase being influenced by external environment + genetic endowment.

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