Studies on Productivity of Laying Hens Under Various Photoperiods in East Africa

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Date
1981/1982
Authors
Sharma L.P
Kategile J.A
Kyomo M.L
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Abstract
The schedule of 15-18 h/dayleng'th for improved egg production as recommended in earlier investigations (Dobie et al., 1946; Morris, 1961; Lansen and Sturkie, 1961), has been widely accepted as part of poultry management practices. Trends in recent advances of poultry research, however, indicate that continuous or intermi~tent short period illuminations from 10 h to a minimum of 4 h/day have no adverse effects on egg production, egg weight or its shell strength, and give additional advantages in terms of feed and energy conservation (Bell, 1974; Tienhoven and Ostrander, 1973, 1976; Cooper and Barnett, 1977). The economical considera:tion of this finding has been fully exploited in broiler production (Bjornstad and Hvidsten, 1973; Payne, 1975; Buckland et al., 1976), but elicited only a limited response in its application to improved egg production (Bell, 1974; Goldrosen and Buckland, 1977; Kuit and Middlekoop, 1977).
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East African Agricultural And Forestry Journal, XLVI (1-4), p. 76-80
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