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This study examined the effects of incorporating fermented rapeseed meal (FRSM) into the
diet of newly weaned piglets on mineral digestibility and bone health. Experimental diets containing
varying levels of FRSM (8%, 12%, 15%, and 25%) were introduced to the piglets at 18 days of age, prior
to weaning at 28 days. These diets were continued until the piglets were euthanized at 42 days of age.
Mineral absorption was assessed using the apparent total tract digestibility (ATTD) method and blood
plasma element analysis, while bone mineral content and mechanical properties were evaluated
through densitometry and three-point bending tests. The results showed that intermediate levels
of FRSM (12–15%) significantly enhanced the digestibility of key minerals, including phosphorus,
calcium, magnesium, copper, zinc, and iron. This improvement was linked to increased femoral
mineral content and bone stiffness, as well as a higher yield point, likely due to enhanced collagen
synthesis. Additionally, there was an increase in bone fracture load and fracture stress, potentially
due to changes in the organization of the bone mineral phase, as no changes in bone mid-shaft
mineral density or geometry were observed. These findings suggest FRSM as a promising dietary
component for improving mineral bioavailability and bone health in piglets.
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