[The effect of soluble Tylan on the fattening of broilers]. 
Two groups of broilers, each consisting of 5 000 birds, were used for the testing of the Tylan soluble preparation.  The broilers were of the Ross I type.  The results show that the use of this preparation dissolved in water and administered in the course of the first three days of age and on the 28th day increased the gains of the birds in the test group by 7.33%, reduced feed consumption per 1 kg of weight, and decreased the mortality rate.  Mycoplasmosis occurred in individual cases in the control group to which Tylan soluble was not administered.  No such disease occurred in the treated group.  It was stated in the economic evaluation of the trial that in the test group the financial costs per 1 kg of produced poultry meat decreased by 0.42 crowns, as compared with the control group.