title: [Metabolism of rumen microbial populations formed on biosubstrates with different assimilation under the effect of pentachlorophenol].
abstract: It has been established that metabolism of mixed microbial population formed on easy assimilated sources of energy and nitrogen (concentrate diet) progressed on higher level. There is increase of amilolytic activity, formation of lactate, ammonia, low molecular carbonic acids with predomination of propionate molar fraction. The increased resistance to effect of pentachlorophenol (PCP) is characteristic nature of the latter. The role of the most resistant synthrophic bacteria to PCP increases. The pure strains of Streptococcus bovis and Megasphaera elsdenii do not stop metabolism at 100 microM of PCP. Mixed population of microorganisms formed on hard accessible biosubstrates (cellulose) and Butyrivibrio fibrisolvens have the increased cellulosolytic activity and while the high sensibility even to low doses of PCP (10-40 microM) is observed. It has been supposed that mechanism of PCP effect is ambiguous for various species of microbial complex of rumen. It's effect strength on all main chains of metabolism (membrane transport, energetic exchange, protein biosynthesis, etc.) significantly depends on capacity of pool of metabolic intermediates formed as a result of definite program of biotechnology of nurture, but significantly decreases the harmful effect of biocides.
authors.affiliation: Biotechnology Research Institute of Animal Production Gzhytskyi Lviv Academy of Veterinary Medicine, Ukraine.
authors.forename: L H
authors.initials: LH
authors.lastname: Kalachniuk
authors.forename: O Ie
authors.initials: OIe
authors.lastname: Vozna
authors.forename: H I
authors.initials: HI
authors.lastname: Kalachniuk
authors.forename: Iu M
authors.initials: IuM
authors.lastname: Lytsur
authors.forename: N I
authors.initials: NI
authors.lastname: Latsik
authors.forename: O H
authors.initials: OH
authors.lastname: Savka
authors.forename: M
authors.initials: M
authors.lastname: Marounek
authors.forename: S H
authors.initials: SH
authors.lastname: Kawai
mesh_terms: D000818:Animals; D002417:Cattle; D002482:Cellulose / Q000378:metabolism; D003470:Culture Media; D004305:Dose-Response Relationship, Drug; D016964:Gram-Negative Anaerobic Cocci / Q000187:drug effects / Q000378:metabolism; D006095:Gram-Positive Cocci / Q000187:drug effects / Q000378:metabolism; D007773:Lactates / Q000378:metabolism; D010416:Pentachlorophenol / Q000494:pharmacology*; D012417:Rumen / Q000187:drug effects / Q000378:metabolism / Q000382:microbiology*; D013045:Species Specificity; D016985:Streptococcus bovis / Q000187:drug effects / Q000378:metabolism; D013379:Substrate Specificity
chemical_list: D003470:Culture Media; D007773:Lactates; D002482:Cellulose; D010416:Pentachlorophenol