Acute urea toxicity in sheep.

Twenty-seven sheep were assigned to three groups in order to study acute urea toxicity. Groups I, II and III were dosed with 0.5, 0.

A new antiviral agent (P2) in the purpose of treatment of bovine leukemia.

Thirty five cows and heifers, all positive reactors on ID test and all showing persistent lymphocytosis (15 with markedly enlarged lymphatic glands) were divided in 4 experimental groups and treated with P-2, a new antiviral agent, previously shown to be effective for several RNA type viruses. In table are indicated groups, range of dosages of P-2, and variability in WBC and lymphocyte. White blood cells found to be at the lowest level (P less than 0.

Prevention of thiopental and thiopental/halothane cardiac sensitization to epinephrine in the sheep.

The effects of epinephrine (5 microgram/kg of body weight) on ten unanesthetized sheep were experimentally tested: all sheep displayed serious arrhythmias. Sheep anesthetized with thiopental and thiopental/halothane combination displayed cardiac arrhythmias of the order of 10% and 20% respectively. Challenge injections of epinephrine (5 microgram/kg of body weight) to ten sheep anesthetized with thiopental, and to the same number of animals after 45 minutes of anesthesia with thiopental/halothane, produced serious arrhythmias.

The electrocardiogram, vectorcardiogram and spatiocardiogram in the rabbit.

Standard, augmented limb leads and three orthogonal leads (I, aVF and V(10)) taken simultaneously were recorded from 25 rabbits. Records were analyzed for rate, rhythm, interval duration and component amplitudes. The wave forms of QRS complexes were analyzed in all leads.