The effect of sublethal doses NaNO3 given in concentrates or by capsules on blood and vitamin A status of young red and white female cattle.

Abstract

Administration of 0, 75, 150, 225 or 300 mg/kg body wt daily of NO3 as aqueous soln of NaNO3, mixed with the concentrate ration, to young heifers for a period of four months did not produce any serious toxic symptoms. In animals given 225 or 300 mg/kg there was, however, a slight reduction in feed consumption, along with increases in water intake, PCV values and conversion of Hb (up to 7%) into methaemoglobin. Respiration rate, body weight and vitamin A content of the liver were not affected. The toxicity of NaNO3 is discussed in relation to NO3 poisoning of cattle in the field. (Abstract retrieved from CAB Abstracts by CABI’s permission)