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Effect of daylength on ocular measures. (a) Comparison of broiler relative eye weight (g/kg body weight) at 31 or 46 d of age under four daylength photoperiods, with data expressed as a percentage of the maximum value within each age; (b) Comparison of turkey ocular dynamics at 12 weeks of age under four daylength photoperiods, with data expressed as a percentage of the maximum value within each age.
