Andrés Haro & Fernando Diaz
Among the nutrients required by ruminant animals are trace-minerals such as: iodine (I), cobalt (Co), copper (Cu) and selenium (Se). These minerals are required for several vital functions of the organism, fundamental to optimize dairy cow performance. When deficient they can induce pathologies such as metabolic problems. The uses of boluses for a slow release of some of these minerals in the rumen has recently received greater attention by dairy farmers.