Layers ration contains more limestone than growers ration because limestone

Layers ration contains more limestone than growers ration because limestone supplies sufficient minerals to layers for shell formation. Limestone is a source of calcium, which is essential for eggshell formation in layers. As hens mature and start laying eggs, they require more calcium to produce strong and healthy eggshells. Therefore, layers' feed is formulated to contain higher levels of calcium, usually in the form of limestone, compared to growers' feed. Growers' feed, on the other hand, contains lower levels of calcium because excessive calcium intake in young birds can lead to skeletal problems and deformities. This is because young birds have different nutritional requirements compared to mature layers. In summary, the reason why layers' ration contains more limestone than growers' ration is that limestone supplies sufficient minerals, particularly calcium, for shell formation in mature hens.