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  • Effects of ammonia and hydrogen sulfide on physical and biochemical properties of the claw horn of Holstein cows.

    Author(s) : Higuchi, H.Kurumado, H.Mori, M.Degawa, A.Fujisawa, H.Kuwano, A.Nagahata, H.

    Author Affiliation : Department of Animal Health, School of Veterinary Medicine, Rakuno Gakuen University, Bunkyoudai-midori 582, Ebetsu, Hokkaido 069-8501, Japan.

    Author Email : higuchi@rakuno.ac.jp

    Journal article : Canadian Journal of Veterinary Research 2009 Vol.73 No.1 pp.15-20 ref.26

    Abstract : The effectseffectsSubject Category: Properties
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    of ammoniaammoniaSubject Category: Chemicals and Chemical Groups
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    and hydrogen sulfidehydrogen sulfideSubject Category: Chemicals and Chemical Groups
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    on the physical and biochemical propertiespropertiesSubject Category: Properties
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    of the claw horn of Holstein cowscowsSubject Category: Organism Groups
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    were evaluated. Significant (P<0.05, 0.01) decreases in hardnesshardnessSubject Category: Properties
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    and elasticityelasticitySubject Category: Properties
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    were found in claw hornshornsSubject Category: Anatomical and Morphological Structures
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    soaked in ammonia (NH3) and hydrogen sulfide (H2S) solutionssolutionsSubject Category: Miscellaneous
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    compared with those that were soaked in water for 12, 24, and 48 h. Water absorption rate, as a indicator of permeabilitypermeabilitySubject Category: Properties
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    barrier function, increased significantly (P<0.05) over time during the soaking period and was found to be dependent on the concentrations of NH3 and H2S in the solutions. The contents of ceramide, the main lipid component for the permeability barrier system of the stratum corneum, were significantly decreased in claw horns soaked in NH3 and H2S solutions compared with the values before soaking. Quantities of eluted protein released from claw horns treated with NH3 and H2S solutions were approximately 20 times and 30 to 40 times greater than those released from claw horns treated with water alone. Interestingly, the quantities of cytokeratin 10, the main cytoskeletal protein of the stratum corneum, eluted from claw horns treated with NH3 and H2S solutions were markedly greater than the quantity released from horns soaked in water. Our results suggest that abnormal changes in the physical property of claw horn caused by NH3 and H2S treatment are due to disruption of the biochemical property of the claw horn induced by these chemical agents derived from slurry.

    ISSN : 0830-9000

    Record Number : 20093102411

    Publisher : Canadian Veterinary Medical Association

    Location of publication : Ottawa

    Country of publication : Canada

    Language of text : English

    Language of summary : French

    Indexing terms for this abstract:

    Organism descriptor(s) : cattlecattleSubject Category: Organism Names
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    , Holstein (cattle breed)holstein (cattle breed)Subject Category: Animal Breeds
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    Descriptor(s) : ammoniaammoniaSubject Category: Chemicals and Chemical Groups
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    , biochemistrybiochemistrySubject Category: Disciplines, Occupations and Industries
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    , breedsbreedsSubject Category: Organism Groups
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    , cattle breedscattle breedsSubject Category: Organism Groups
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    , comparisonscomparisonsSubject Category: Miscellaneous
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    , cowscowsSubject Category: Organism Groups
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    , cytoskeletoncytoskeletonSubject Category: Anatomical and Morphological Structures
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    , effectseffectsSubject Category: Properties
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    , elasticityelasticitySubject Category: Properties
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    , evaluationevaluationSubject Category: Techniques, Methodologies and Equipment
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    , hardnesshardnessSubject Category: Properties
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    , hornshornsSubject Category: Anatomical and Morphological Structures
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    , hydrogenhydrogenSubject Category: Chemicals and Chemical Groups
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    , hydrogen sulfidehydrogen sulfideSubject Category: Chemicals and Chemical Groups
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    , permeabilitypermeabilitySubject Category: Properties
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    , propertiespropertiesSubject Category: Properties
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    , proteinsproteinsSubject Category: Chemicals and Chemical Groups
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    , slurriesslurriesSubject Category: Commodities and Products
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    , solutionssolutionsSubject Category: Miscellaneous
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    Identifier(s) : animal breed, animal breeds, claw, Holstein, hydrogen sulphide

    Broader term(s) : BosbosSubject Category: Organism Names
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    , BovidaebovidaeSubject Category: Organism Names
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    , ruminantsruminantsSubject Category: Organism Names
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    , ArtiodactylaartiodactylaSubject Category: Organism Names
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    , mammalsmammalsSubject Category: Organism Names
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    , vertebratesvertebratesSubject Category: Organism Names
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    , ChordatachordataSubject Category: Organism Names
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    , animalsanimalsSubject Category: Organism Names
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    , eukaryoteseukaryotesSubject Category: Organism Names
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    , cattlecattleSubject Category: Organism Names
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