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V. is not _100% effective; regardless of the biologic used, an occasional loss from anthrax in a vaccinated herd may occur. However, this does not justify a hasty revaccination of the herd. The following immunizing agents are available for the vaccination of animals against anthrax: ( l) ANTIANTHRAX SERUM, (2) ANTHRAX BACTERIN, and (3) ANTHRAX-SPORE VACCINE. The first two of these are sterile anthrax products, and the third is a living-spore anthrax product. ) ANTIACID= Antacid. ANTIANTHRAX SERUM, as soon as it is absorbed, produces increased resist· ance to ANTHRAX in direct proportion to the quantity of serum that is given.

One of the various theories to explain the mechanism by which antibiotics produce a more rapid growth assumes that they alter the flora in the digestive tract of the animals, thus eliminating either the micro-organisms which compete for the consumed food or those 30 which secrete toxins, thus slowing down animal growth. Antibiotics increase the rate of growth of swine and poultry, increase feed efficiency, decrease their VITAMIN B 1 ~ requirements, exert a "protein sparing" effect, and increase liveability.

Sick animals may show an inclination tc fight. Dribbling urination is common in A. Sick cattle are usually constipated, and ABORTION often occurs in advanced pregnancy. Death may follow within 1 or several days after the clinical symptoms of the disease appear. Recovery is usually slow. There is a wide range in the death rate of affected herds; the average usually varies from 25 to 60% of the infected animals. , Anaplasma marginale parasites visible as dots near the margins of the blood cells), it is probable that the animal will die; if the number of infected red cells is only 10 to 20% , the animal is more likely to recover.