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  • Title: Negative interactions between Ostertagia ostertagi and Cooperia oncophora in calves.
    Author: Kloosterman A, Albers GA, van den Brink R.
    Journal: Vet Parasitol; 1984 Aug; 15(2):135-50. PubMed ID: 6541831.
    Abstract:
    The interactions between Ostertagia ostertagi and Cooperia oncophora were studied in calves by concurrent and sequential infections. A reciprocal negative interaction between the 2 species was found in sequential, but not in concurrent infections. This result was supported by the finding of serological cross-reactions. It is suggested that the negative interaction is immunologically mediated. The depression of weight gain found after infection was similar for O. ostertagi- and C. oncophora-infected calves.
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