SciELO - Scientific Electronic Library Online

 
vol.40 issue1 author indexsubject indexarticles search
Home Pagealphabetic serial listing  

South African Journal of Animal Science

Print version ISSN 0375-1589

Abstract

LEWIS, P.D.; GOUS, R.M.  and  TUMOVA, E.. Broiler performance and bone strength minimally affected by either a simulated dusk or night-interruption photoperiod. S. Afr. j. anim. sci. [online]. 2010, vol.40, n.1, pp. 0-0. ISSN 0375-1589.

Two genotypes of male broilers were given 12 h of daily illumination; as a conventional photoperiod, with the final hour at reduced illuminance to simulate dusk, or with 1 h of the light given during the middle of the night. The lighting modifications had no significant effect on any performance variable or on tibial breaking strength. Feed intake was unaffected by the lighting treatments during either the 1-h dusk period or the night, but was inexplicably stimulated in the both experimental groups during the main photoperiod.

Keywords : Photoperiod; dusk; broiler growth; bone strength.

        · text in English     · pdf in English