EN
Feeding is one of the main item in prophylaxis of the perinatal period diseases in sows. In the paper attention was paid to an extremely low level of crude fiber in a diet of sows in a perinatal period. The granulated feed containing 5.0% of buckweat hulls (Exocarpim fagopyri-Ef) was used in 60 sows from day 90 of pregnancy to day 28 of lactation. During the experiment productivity of sows and their progeny and some biochemical, haematological, ethological and clinical parameters were investigated. It was found that the diet containing 5.0% of Ef did not affect the number of the perinatal period diseases in sows but it facilitated defecation and reduced the percentage of sick piglets. On the other hand, using of Ef enabled to adopt its as a feed component and simultaneously reduced costs of animal feeding.