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  • Title: Prevention of lactic acidosis in cattle by lasalocid or monensin.
    Author: Nagaraja TG, Avery TB, Bartley EE, Galitzer SJ, Dayton AD.
    Journal: J Anim Sci; 1981 Jul; 53(1):206-16. PubMed ID: 7319937.
    Abstract:
    Intraruminal administration of lasalocid or monensin (1.3 mg/kg body weight) effectively prevented in glucose- or corn-induced lactic acidosis in cattle. Administering the antibiotics for 7 days before experimentally inducing acidosis with corn (27.5 g/kg body weight), effectively prevented acidosis, while 2 days' were sufficient to prevent glucose-induced acidosis (12.5 g/kg body weight). The different responses observed in the two trials probably stemmed from the difference in amounts of carbohydrate used to induce acidosis. Antibiotic-treated cattle had higher rumen pH values and lower L(+) and D(-) lactate concentrations that control cattle that received no antibiotics. Ruminal VFA in control cattle decreased, while total VFA and the molar proportion of propionate increased in antibiotic-treated cattle after grain engorgement. Control cattle exhibited classic signs of acidosis, such as lowered blood pH; increased blood lactate, particularly D(-) isomer; hemoconcentration, and depleted alkali reserve with a pronounced based deficit. Antibiotic-treated cattle exhibited no signs of systemic acidosis.
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