Abstract:The effects of free choice feeding of bone meal (BM) of different particle sizes on performance and egg quality traits of layer chickens were assessed. A total of 128 Hy-line White layers (56 wks old, BW ± SD: 1500 ± 18 g) were assigned randomly into 16 cages of 8 birds each. Four dietary treatments based on BM particle sizes (Layer Diet/Control; Layer diet + 1-2 mm BM; Layer diet + 2-3 mm BM; Layer diet + 3-4 mm BM) were choice fed for five weeks. Dry matter (DM), calcium (Ca), total phosphorus (TP), ash cont… Show more
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