Effects of dietary 25-hydroxyvitamin D3 (25(OH)D3) supplementation on production performance, egg quality, tibia quality and mineral metabolism of ducks during peak laying period in the cage rearing system
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25-Hydroxyvitamin D3 (25(OH)D3) has been reported to improve production performance and egg quality in ducks during late laying period, but its effects during the peak laying period remain rarely studied. The aim of this study was to investigate the effects of... ...
