EN
Synchronization of ovulation in young sows was carried out by means of Regumate preparation in 453 females divided into 5 groups. Regumate was administered per os in a dose of 5 ml, i.e. 20 mg (animal) day, for 18 days in groups or individually. It was found that the preparation administered individually to young sows facilitated exact synchronization of oestrus cycle and produced a beneficial effect on some breeding indices in examined females.