EPIDEMIOLOGY OF BLACKHEAD IN TURKEYS UNDER APPROXIMATELY NATURAL CONDITIONS
نویسندگان
چکیده
منابع مشابه
Epidemiology of Blackhead in Turkeys under Approximately Natural Conditions
The foregoing experiments in outdoor, unprotected enclosures demonstrates the difficulties surrounding the rearing of turkeys. These are discussed from another view-point and to avoid repetition only a few outlying facts should be considered here. The occasional presence of coccidia, the presence of Heterakis papillosa in the ceca, the occurrence of cases of aspergillosis and of chicken-pox in ...
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The natural form of blackhead, although very fatal to young turkeys, is favorably influenced by treatment with certain of the newer arsenical compounds. Neoarsphenamine injected intravenously in toxic doses has a somewhat favorable effect on the course of the spontaneous disease and evidently lowers the mortality. Its instability, its pronounced toxicity for young turkeys, as well as the diffic...
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Of 54 sparrows examined in or near Princeton, coccidia were found in 43, or 80 per cent. Most of the negative cases were encountered in November and December. In the summer and fall practically all were infected. These figures agree closely with Hadley's, who found 79 per cent infected from May to December. Cultures of feces on agar showed that, at least in this locality, the infecting species ...
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In a flock of artificially reared turkeys originally consisting of 85 birds and reduced during the summer and fall by deaths and withdrawals for experimental purposes to 42 birds, five cases of blackhead occurred. These appeared during the months of July, September, and October. In four, Heterakis was searched for and found. In 38 birds from this flock killed for food during November and Decemb...
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ژورنال
عنوان ژورنال: Journal of Experimental Medicine
سال: 1920
ISSN: 1540-9538,0022-1007
DOI: 10.1084/jem.31.5.633