. Poultry diseases and their treatment. Poultry. DISEASES OF THE DIGESTIVE TRACT 97 submucous layers are invaded by the germ (protozoon). In Fig. 35 the section B has been magnified 900 times. As explained under the cut, all stages of the coccidium tenellum are observed in a mass of dying and disintegrating cells—the remains of the diseased mucous lining of the bowel. Repeated examinations have been made of healthy chicks killed for the purpose,' and chicks dying from other causes, and thus far no case has shown these conditions. Treatment.—The most of our experimental work with various remedi
. Poultry diseases and their treatment. Poultry. DISEASES OF THE DIGESTIVE TRACT 97 submucous layers are invaded by the germ (protozoon). In Fig. 35 the section B has been magnified 900 times. As explained under the cut, all stages of the coccidium tenellum are observed in a mass of dying and disintegrating cells—the remains of the diseased mucous lining of the bowel. Repeated examinations have been made of healthy chicks killed for the purpose,' and chicks dying from other causes, and thus far no case has shown these conditions. Treatment.—The most of our experimental work with various remedies has been with the coccidian. Fig. 34 Fig- 35 Fig. 34- Section Through Cecum (Magnified loo times) From a chick that had died of coccidian white diarrhea. A, Muscular layer. B, remnant of gland. C, degenerated disintegrating mass. There is complete destruction of the mucous membrane. Fig, 35. Section "B" in Fig. 34 (magnified 900 times) Shows various stages of the coccidium tenellum. A, Oocyst. B, Sporo- blast, first stage. C, sporozoit, first stage. D, schizont, merozoites within, surrounded by a disintegrating cell mass. E, polymorphonu- clear leukocyte. form. In one outbreak, referred to above, 80 per cent of the first hatch of 2,000 chicks had died. "We began trying to improve sanitary conditions, and administered various"dilutions of permangan- ate of potash, copperas and carbolic acid. The loss was unaffected. By this time the writer had examined many dozen birds in his laboratory, and in about fifty per cent of the cases, the Bacterium. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Kaupp, Benjamin Franklyn, 1874-; Campbell, Delwin Morton, 1880- ed. Chicago, American Journal of Veterinary Medicine
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