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Intermittent lighting programs for layers with different photophases in the beginning of the laying phase

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Academic year: 2019

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Table 1 - Time and month of photophases, natural escotophases and photoperiod according to the age of laying in intermittent programs.
Table 2 - Calculated composition of experimental diet.
Figure 1 - Feed intake and production of laying eggs subjected to lighting programs 21-45 weeks old in decreasing  natural photoperiod
Figure 2 - Egg mass of laying hens subjected to three  lighting programs with 21 to 45 weeks of age  with decreasing natural photoperiod

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