EN
The effect of Biolactin-2 preparation, containing 5 mg of purified prolactin, on the occurrence of MMA syndrome and the number and weight of piglets in the litter was studied. The study was carried out on 212 gilts of which 150 were prophylactically administered Biolactin-2 preparation. Clinical examinations showed that MMA syndrome occured only in 7,33% of gilts in the group receiving Biolactin-2, while in the control group, it occured in 41,9%. Moreover, a higher body weight of the litter of 5.24 kg and larger litter size of 1.7 piglet, was ascertained at day 10 after birth amoung those given the preparation.