Variability of resistance of calves to acquisition of infection by Nematodirus Helvetianus.

Abstract

Parikov, V. A.<lb>(1965). (Treatment of<lb>bovine mastitis<lb>with ultrasound). Veteri-<lb>nariya, Moscow 42, No. 6 pp. 77-81<lb>(R.)<lb>(Sel'skokhoz. Institut,<lb>Voronezh, USSR). Acute<lb>catarrhal mastitis was induced in 30 cows<lb>by intramammary injection of<lb>Staphylococcus aureus. Twenty were<lb>treated with ultrasound: after the udder<lb>had been… (More)

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