Results and Discussion
Body weight at the beginning of the induced moult (81st week of age), three weeks after feeding
treatments were initiated (85th week of age), and at the end of the trial (105th week of age) are given in Table
2. The final body weight for hens fed on a diet with OSM was significantly higher than hens fed MBM and
all-limestone diets, and was also higher than for hens fed MBM+OSM. Neither MBM nor OSM
supplementation to the diet as Ca supplements of animal origin affected hen mortality (Table 2).