. The pathology and differential diagnosis of infectious diseases of animals : prepared for students and practitioners of veterinary medicine . Veterinary medicine; Communicable diseases in animals. AVIAN TUBERCULOSIS 183 fowls are weak, dumpish and move about very little. The eyes are bright in most cases until the end is near. The appetite is good, and the fowls eat ravenously until a few days before death. The tempera- ture is in most cases within the normal limits, rarely it is subnormal. The blood is pale. The hemoglobin varies from thirty-five to seventy per cent, as tested with Gowers'
. The pathology and differential diagnosis of infectious diseases of animals : prepared for students and practitioners of veterinary medicine . Veterinary medicine; Communicable diseases in animals. AVIAN TUBERCULOSIS 183 fowls are weak, dumpish and move about very little. The eyes are bright in most cases until the end is near. The appetite is good, and the fowls eat ravenously until a few days before death. The tempera- ture is in most cases within the normal limits, rarely it is subnormal. The blood is pale. The hemoglobin varies from thirty-five to seventy per cent, as tested with Gowers' hemoglobinometer. The red blood corpuscles vary from 1,010,000 to 2,600,000 per cubic millimeter. There appears to be a slight increase in the number of white corpuscles especially of the eosinophiles. Tuberculous fowls are often lame. Pernot mentions this as one of the important symp- toms in the cases he observed. It is due to joint lesions in some cases. In others it ap- pears to be due to extensive lesions in the viscera. The avian variety of tubercle bacteria resembles quite closely those of the human and bovine varieties in size and general morphology as they are found in the tissues of the fowl. A measurement of over two hun- dred individual organisms in cover glass preparations made directly from organs of fowls gave the following: In the liver the length varied from to the spleen and in the skin they varied from 1 to 4ia in length. A general average gave a length of %.7l'-. They often appear in these preparations in dense masses. Chains made up of a number of short elements are rarely present. Granules are occasionally observed. In the preparations from the skin a considerable num- ber of them contain polar granules and not infrequently three such bodies were noticed in a single individual. Perhaps the most striking feature concerning these organisms in the tissues is their enormous numbers. Sibley has called attention to the similarity of avian tubercle ba
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectveterin, bookyear1916
