Breed- and gender-dependent differences in eye growth and form deprivation responses in chick

Schmid, Katrina L. & Wildsoet, Christine F. (1996) Breed- and gender-dependent differences in eye growth and form deprivation responses in chick. Journal of Comparative Physiology A: sensory, neural, and behavioral physiology, 178(4), pp. 551-561.

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This study investigated the influences of breed and gender on the response to form deprivation and subsequent changes (recovery) when normal vision was restored. Two breeds of chickens, the White Leghorn and broiler cross, were compared, as well as male and female chicks for the White Leghorn breed. Normal eye growth was faster in the more rapidly growing broiler chicks; gender-differences were not as great as breed-differences although male White Leghorns ultimately became heavier and showed slightly greater normal eye growth than females. While broth breeds showed high myopia and axial elongation in response to form deprivation, they differed significantly in the magnitude of their response, with White Leghorns showing more myopia and greater axial elongation and also recovering more slowly. Responses to form deprivation were similar for both genders, with respect to both the amount of myopia and axial elongation produced, although the female chicks recovered faster. Together these observations indicate that, although the overall pattern of response of form deprivation is consistent across both breed and gender, related quantitative differences in responses can be expected and need to be taken into account in experimental design and cross-study comparisons.

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ID Code: 4157
Item Type: Journal Article
Refereed: Yes
Additional Information: For more information, please refer to the journal's website (see link) or contact the author. Author contact details:
Keywords: Chickens, Emmetropization, Breed, Gender, Form deprivation
DOI: 10.1007/BF00190185
ISSN: 1432-1351
Subjects: Australian and New Zealand Standard Research Classification > MEDICAL AND HEALTH SCIENCES (110000) > OPTOMETRY AND OPHTHALMOLOGY (111300)
Divisions: Current > QUT Faculties and Divisions > Faculty of Health
Current > Institutes > Institute of Health and Biomedical Innovation
Copyright Owner: Copyright 1996 Springer
Copyright Statement: The original publication is available at SpringerLink
Deposited On: 15 Jun 2006 00:00
Last Modified: 15 Jan 2009 07:03

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