Article
Photoperiodic responses of broilers. II. Ocular development.
British poultry science - 1 Nov 2009
Lewis P D, Gous R M
Abstract excerpt
1. Poultry are naturally long-sighted when they hatch, becoming emmetropic by 6 weeks of age. However, Cobb and Ross broilers exposed to <or=12-h photoperiods rapidly learn to eat in the dark, a behaviour which could adversely affect the establishment of emmetropia. And so, in the current study, eyes were enucleated, post mortem, at 40 and 54 d from broilers given various photoperiods between 2 and 24 h, and eye...
Topics
- Animals
- Chickens
- Eye
- Genotype
- Intraocular Pressure
- Male
- Photoperiod