This study explored how adding fermented rapeseed meal to the diet of young piglets affects their ability to absorb essential minerals and the strength of their bones. It is known that microorganisms used in the fermentation process synthesize enzymes that enhance the bioavailability of macro- and microminerals essential for proper bone formation and growth. We introduced different levels of fermented rapeseed meal into piglets’ diets before weaning and continued feeding it to them until they were 42 days old. We found that moderate amounts of fermented rapeseed meal helped the piglets absorb key minerals like calcium, phosphorus, and magnesium more effectively. This, in turn, led to stronger bones with a better mineral content and stiffness. Our findings suggest that fermented rapeseed meal could be a valuable addition to piglets’ diets, improving their growth and bone health. This research may help raise healthier animals and potentially reduce the need for synthetic mineral supplements, which can be both costly and environmentally harmful.