The addition of fibre to feed has a significant impact on animal production, especially in broiler farming. The aim of the experiment was to study the effects of adding different concentrations: 0%, 10%, and 20% non-digestible dietary fibre (nPV) on the growth and development of the gastrointestinal tract. The experiment involved 320 broiler chickens of the Ross 308, which were divided into five experimental groups. The trial was divided into three parts according to the feeding strategy, with the animals were fed meal without fibre or with the addition of nPV "on top." In the first part of the trial (from day 1 to day 12), the chickens were fed a starter feed without the addition of nPV. From day 13 to day 27 (part 2 of the trial), the chickens were fed according to the following scheme: The control group (k) received feed without additives (nPV-0%), groups n10 and v10 received a feed mixture with 10% fibre (nPV-10%), groups n20 and v20 received feed mixture with 20% added fibre (nPV20%). From day 28 to day 41 (part 3 of the trial), all groups of chickens were fed the same diet as in part 2, only groups k, n10 and n20 received feed without fibre (nPV0%) . The results showed that the addition of 10% and 20% nPV in the third part of the experiment did not increase feed intake, as we could not find any statistical differences between the groups, but the chickens with nPV supplementation addition grew worse. In the groups with higher nPV after cessation of nPV in the third part (n10 and n20), the effect on the mass of the intestines was no longer pronounced, while the chickens that continued to receive fibre (v10, v20) grew less and had a higher proportion of empty intestines, oesophagus, small intestine, cecum, and colon compared to group k.
|
