Țurcanu, Ștefan; Gulea, Aurelian; Bârcă, Maria; Ddidilică, Ina
(2012-09-27)
Experiment were subjected laying hens of Hay-Sex cross. In study was taken two groups that received, according to the ration, zinc trichloroacetate tetrahydrate and zinc hidroselenite dihydrate. The results show a more ...