Raquitismo en cerdos en crecimiento

The appearance of a process of rickets in growing pigs is described. The clinical signs observed were lameness, bone fractures and paraplegia. The necropsy revealed thickening of the tibiotarsal and costocondral joints. Microscopically, thickening of the periostium with presence of ossification foci, irregular ossification lines and the appearance of cartilage areas between the ossified tissue was observed. Feed samples were analyzed and was demonstrated that almost the total phosphorum present came from the raw materials and no phosphorum was added in the vitamin-mineral complex. The final diagnosis was rickets due to a mineral imbalance. The problem was due to a error in manufacturing feed. Ten fold less quantity of vitamin-mineral complex of the specified was added to the feed by a transciption error in the formula.