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EFFECTS OF ENDOCRINE EXTRACTS ON THE EARLY DEVELOPMENT OF THE CHICK

โœ Scribed by Breneman, W. R.


Book ID
121128848
Publisher
American Association for the Advancement of Science
Year
1934
Tongue
English
Weight
122 KB
Volume
79
Category
Article
ISSN
0036-8075

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Factors affecting the development of filial preferences in chicks were investigated. Four groups of chicks were hatched and maintained in darkness. When the chicks were 20-hr old, three of these groups were exposed to an overhead light ("primed") for .5 h. When 24-hr old, all groups were placed in r