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Birds and housingD-old 240 male Ross broilers were randomly allotted to 24 raised wire-floor cages (100×72×50 cm).Temperature was maintained at 32-33°C up to Day 7 and gradually decreased to 22°C at wk 5.A continuous lighting was used for the first 3 d, and 16 h of light and 8 h of darkness were applied until the end of the 5 wk feeding trial.
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An et al. (2004) studied this question.
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