Abstract:A total of 357 Isa Brown layers were used in this study in order to assess the effects of lighting length on laying performance and on some egg characteristics in a family farm of Antananarivo suburb, Madagascar. The birds, in their egg producing phase (37 week old), were distributed at random into one of 3 lots, each allocated to one of 3 lighting treatments: 12 hour natural daylight, used as control; 14 hour lighting length (natural daylight + artificial light) and 16 hour lighting length (natural + artifici… Show more
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