Valera, Moises, Odilia Guti?rrez, Carlos Gallego, Abel Oramas, and Liyen S?nchez. 2011. “Blood Macro and Microelements in Dairy Herds under Grazing at the Institute of Animal Science. Technical Note”. Cuban Journal of Agricultural Science 45 (2). https://cjascience.com/index.php/CJAS/article/view/127.