[Optimal irradiation dosage for microorganisms in cow's milk].

Comparative experimental investigations were carried out to establish the effect of ultra violet rays on the total count of organisms in pooled cow's milk at various irradiation rates (20, 30, 40, 50 and 60 min). The milk was intended for feeding calves. Results showed that with increasing the time of ultra violet treatment the microbial contamination of milk dropped. With the irradiation method used by the authors best bactericidal effects were obtained at 60 min treatment.