The effect of intensity of daylight on egg production of fowls in cages.

Abstract

Fowls kept in individual laying cages may be exposed to very different intensities of daylight according to the position of the cage in relation ta the source of light. Daylight-intensity readings in two buildings housing laying-cage batteries varied from 1-8 ft. candles at 4.30 p.m. and 7-11 ft. candles at 9.30 a.m., in positions of low light, to 16-35 ft. candles at 4.30 p.m. and 65-172 ft. candles at 9.30 a.m. in positions of high light. Analysis of records from 170 pullets from selected positions showed no significant difference among egg production of birds exposed to this range of light intensities,