This is because the birds do not have teeth, growth and development stage in chicks, ducklings 0.5% -1% of the powder (can also be used instead of sand), whose main role is to help ground feed in the gizzard, it is conducive to digestion of nutrients Absorption; adult hens and ducks produce almost one egg per day. Eggshells are mainly synthesized from calcium carbonate, so a large amount of feed containing calcium is needed in the feed. The main component of stone powder is calcium carbonate, which is inexpensive and inexpensive, which has become the main source of calcium in feed. According to the peak egg production needs, the addition of stone powder is 8%-9%. If the egg is low, the amount of powder added should be reduced accordingly.
(It should be noted that the stone powder in the feed during the laying stage cannot be replaced by sand).
In view of the above, the amount of calcium required for different growth stages of poultry is different. If the number of long-term added to the powder feed above or below these standards seriously, there will be too much calcium disorders: such as poultry gout; or calcium deficiency: such as soft-bone disease poultry paralysis fracture easily, thin egg, soft shell The number of eggs has increased.
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