Exposing eggs to MF did not influence hatchability of eggs and chick weight at hatch. However,
chickens of MF60 and MF75 treatments had lower weight gain and feed intake than those of the
non-exposed treatment at 39 d of age. MF exposure of eggs did not influence FCR of chickens
between 1 and 21 d of age, but tended to increase FCR, albeit non-significantly, between 22 and
39 d of age.