[Forming microparasitocenoses in intestines of ruminants with helminthoses]
2007
Gudkova, A.Yu. | Kuznetsov, V.M. | Eremeeva, O.R., Ivanovo State Agricultural Academy (Russian Federation) | Petrov, Yu.F., Russian Academy of Agricultural Sciences, Moscow (Russian Federation) | Sadov, K.M., Samara Research and Development Veterinary Station (Russian Federation)
The microflora composition of large segmented intestine (LSI) of helminth-free 7-month-old bulls and bulls experimentally infected with Paramphistomum cervi, Haemonchus contortus, Naematodirus spathiger, Chabertia ovina and Fasciola hepatica and fenbendasol-helminthized in 90 days after infection. In ahelminthic bulls aged 7-8 months the ratio of normal and oprtional microflora of LSI was 96.5%:3.5%; in 9-10-month old ones – 97:3% and in 12-16 month-old ones – 97.5%:2.5%. The normal microflora was presented with lactobacilli, bifid bacteria, bacteroids, non-pathogenic Escherichia coli and coccus forms; optional – Streptococcus bovis, Str. viridans, Str. pyogenes, Str. haemolyticus – 30.1%; pathogenic for mice E. coli – 30.8% and toxin-forming staphylococci – 29.1% of their total number. Dysbacteriosis of different severity was observed with fasciolosis, paramphistomatosis, haemonchosis, nematodirosis and chabertiosis. With monoinvasion with Paramphistomum cervi , Chabertia ovina and Nematodirus spathiger, the microflora composition after dehelminthization restored in the experimental bulls at day 120, F. hepatica – much later. In the animals subjected to mixed invasion with trematodas and nematodes deep changes were observed in the composition of normal and optional microflora: at day 60 – 96%:4% and at day 90 – 94.5%:5.5%. The restoration to the normal one was longer, than with monoinvasion. It may be associated with fenbendasol negatively influencing the intestinal mucous membrane.
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