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Related Experiment Videos

Effect of technical grade pentachlorophenol on rumen microorganisms.

L R Shull, S K McCarthy

    Journal of Dairy Science
    |February 1, 1978
    PubMed
    Summary

    Technical grade pentachlorophenol (PCP) harms rumen microorganisms, reducing cellulose digestion and volatile fatty acid production. Even low concentrations (10 ppm) significantly impact these crucial functions in ruminants.

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    Area of Science:

    • Rumen microbiology
    • Toxicology
    • Animal nutrition

    Background:

    • Pentachlorophenol (PCP) is a widely used pesticide.
    • Rumen microorganisms are vital for digesting plant material in ruminants.
    • Understanding PCP's impact on rumen function is crucial for livestock health.

    Purpose of the Study:

    • To evaluate the in vitro toxicity of technical grade pentachlorophenol (PCP) on rumen microorganisms.
    • To determine the effects of PCP on cellulose digestion and volatile fatty acid (VFA) production in rumen fluid.

    Main Methods:

    • In vitro fermentation procedure using rumen fluid from a fistulated steer.
    • Exposure of rumen fluid to PCP concentrations ranging from 0 to 100 ppm.
    • Assessing toxicity by measuring cellulose digestion and VFA production over 24 and 48 hours.

    Main Results:

    • PCP significantly decreased cellulose digestion at 10 ppm.
    • Propionic acid production, a key VFA, was reduced at 10 ppm PCP.
    • Higher concentrations of PCP showed more pronounced toxic effects.

    Conclusions:

    • Technical grade pentachlorophenol exhibits toxicity towards rumen microorganisms.
    • PCP can interfere with the crucial process of cellulose utilization in ruminants.
    • These findings highlight potential risks to livestock health and productivity.

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