de Carvalho PR, Goncalves Pita MC, Loureiro JE, Tanaka HR, Soares Ribeiro JC. Manganese Deficiency in Bovines: Connection Between Manganese Metalloenzyme Dependent in Gestation and Congenital Defects in Newborn Calves. Pak. J. Nutr. 2010;9(5):488–503. doi:10.3923/pjn.2010.488.503