Changes of energetic value and protein level of rumen content in sheep fed with stuff with livex and blood meal supplementation.

The aim of studies was to determine the influence of Wrocław product from blood--brown, dried livex (modified by whey) and blood meal, which were added to sheep forage, on energetic value and protein, also volatile fatty acids (VFA) levels in rumen content of these animals. The samples of rumen content for determination of the three parameters mentioned above were taken 2.5 hrs after finished morning feeding. The addition of livex and blood meal to forage was 2%. When two non-conventional diet supplements were used in vivo, there was observed significant inhibitory influence of livex on methane level among rumen gases, amounting to 38.9% in sheep and increase in protein amount of about 25.92% (for blood meal these values were: 5.6% and 7.4%, respectively). In connection with that, energy of rumen content was higher by about 22.22% in group of sheep fed with stuff with livex addition and by about 7.41% in group fed forage with blood meal addition. The using of livex as an addition to fodder caused increase of the rumen fermentation efficiency and also regulation of non-glucogenic ratio of volatile fatty acids.