EN
The effects of supplementing piglets’ feed with pure cellulose on their health condition, rearing results and some features of the alimentary tract was determined on 207 piglets allocated to 4 experimental groups. All piglets were fed the same feed mixture which was supplemented with different amounts of cellulose. Groups I, II, III, IV received mixtures with 0, 1.5 or 2.0% of cellulose, respectively. Feed mixtures were available ad libitum since day 7 of age. At day 35 the piglets were weaned and fed restricted amounts of feed. Between days 52 and 58, 4 piglets from each group were slaughtered and fragments of the small intestine were extracted for morphological measurements. Microbiological tests were made on small intestine and caecum digesta and the content of volatile fatty acids was estimated. The experiment was completed on day 84 of the piglets’ life. It was found that cellulose improved piglets’ health and performance indices. There were 25 cases of diarrhea noted in the control group and only 8 cases in the group receiving 2% of cellulose. Body weight gains in these groups during the whole experiment were 256 and 274 g per day, respectively. The lowest number of E. coli and Clostiridium was observed in the digesta of the small intestine and caecum of piglets receiving the highest supplement of pure cellulose. The total amount of all estimated volatile fatty acids was lower in the control group when compared with the experimental ones. The ratio of the villus height/crypt depth was 0.842 in control animals and 1.119 in groups III and IV. It was concluded that even a small amount (1.5-2.0%) of insoluble fiber in piglets’ feed can improve their health and performance, which may be due to changes in the gut morphology, digesta acidity and lower number of harmful bacteria present in the intestine.