Impact of a trace element supplementation programme on health and performance of cross-breed (Bos indicus x Bos taurus) dairy cattle under tropical farming conditions: a double-blinded randomized field trial36964, Dermauw, V., Dierenfeld E., G. Laing Du, Buyse J., Brochier Bernard, Van Gucht Steven, Duchateau Luc, and Janssens G.P. , J.Anim Physiol Anim Nutr.(Berl), 0/6/2015, Volume 99, Issue 3, Number 541, p.531 - 541, (2015)