cracking of egg laid by a flock of layers in a farm can be corrected by

Question

cracking of egg laid by a flock of layers in a farm can be corrected by

Options

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