[Preventive effect of the preparation "Bulgarben" in calves with digestive disorders].

Scientific and economic trials were carried out to test the prophylactic effect of the preparation Bulgarben in calves affected with digestive troubles. Bulgarben was given in the first 10 days after birth at the rate of 100(3) daily of a 12.5 per cent suspension formula activated in one of the milk rations of the animals. The investigations were effected on six farms of the country with a total of 622 test and 586 control calves. The economic analyses of the results showed that with the use of the preparation the number of occasional outbreaks was reduced to 19.9 per cent with the test animals, while it was as high as 42.5 per cent with the control ones. With the test calves mortality rate dropped to 1.6 per cent, and with the controls it was 4.94 per cent. The amount of drugs used with the test animals was three times lower than that used with the untreated controls for the whole experimental period. It was found that the preparation produces a good prophylactic effect in the case of digestive troubles in calves.