cracking of egg laid by a flock of layers in a farm can be corrected by
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- A Addition of iodine to the water supply
- B Increasing the level of vitamin D in mash
- C Increasing the quality of calcium in mash
- D Increasing the amount of calcim, phosphorus and vitamin D in their feed
- E Increasing carotene and calcium level of the mash
Correct Answer: Option D
Explanation:
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