Fermentation pattern of the rumen and hindgut inocula of sheep grazing in an area polluted from the non-ferrous metal industry
2006
Varadyova, Z.(Slovenska Akademia Vied, Kosice (Slovak Republic). Ustav Fyziologie Hospodarskych Zvierat) E-mail:[email protected] | Mihalikova, K.(Slovenska Akademia Vied, Kosice (Slovak Republic). Ustav Fyziologie Hospodarskych Zvierat) | Kisidayova, S.(Slovenska Akademia Vied, Kosice (Slovak Republic). Ustav Fyziologie Hospodarskych Zvierat) | Javorsky, P.(Slovenska Akademia Vied, Kosice (Slovak Republic). Ustav Fyziologie Hospodarskych Zvierat)
The results of an in vitro study of the rumen fluid (RF) and hindgut content (HC) fermentation by microbiota taken from sheep grazing in an area contaminated by heavy metals (CA) were compared with controls from an uncontaminated area (UA). Soil, grass and rumen contents of sheep from the CA were analyzed for heavy metals levels. Based on the concentrations of Hg (4.75 mg/kg), Cu (232.9 mg/kg), Cd (1.17 mg/kg), Pb (92.5 mg/kg) and As (74.6 mg/kg), the soil was categorized as profusely contaminated. Meadow hay from UA was incubated with buffered RF and HC inocula from CA and UA for 24 h. The gas volume in CA was significantly decreased by 50 and 36% in RF and HC, respectively. Methane production in CA was significantly decreased by 77 and 71% in RF and HC, respectively. Significantly lower values of fermentation parameters in CA in comparison with UA were accompanied by significantly reduced total concentrations of rumen ciliate protozoa.
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