. Diseases of poultry; their etiology, diagnosis, treatment, and prevention. Poultry. 214 Diseases of Poultry under the skin, causing deep-seated skin diseases like scaly leg; still others find their way into the internal regions of the body, living either on mucous membrances like the air-sac mite (p. 180) or upon the connective tissue like the connec- tive tissue mite. The most common and most injurious mite parasitic on fowls is the common fowl mite or red mite, Dermanyssus gallinae. These mites are present in almost every poultry house that is not kept very clean. When they are present. Fi
. Diseases of poultry; their etiology, diagnosis, treatment, and prevention. Poultry. 214 Diseases of Poultry under the skin, causing deep-seated skin diseases like scaly leg; still others find their way into the internal regions of the body, living either on mucous membrances like the air-sac mite (p. 180) or upon the connective tissue like the connec- tive tissue mite. The most common and most injurious mite parasitic on fowls is the common fowl mite or red mite, Dermanyssus gallinae. These mites are present in almost every poultry house that is not kept very clean. When they are present. Fig. 40. — The common "red mite" of poultry, Dermanyssus gallince. a, adult, d and e, young. (After Osborn.) in large numbers they are a serious pest. This mite is a little more than ^ millimeter long. The female is a little larger than the male. When empty they are gray with dark spots, but usually they appear some shade from yellow to dark red according to the amount of fowl's blood they contain. They visit the fowls only to feed and spend the rest of the time on the under sides of the roosts, in cracks and crevices, under collections of droppings or other filth and in the nesting material, especially if such material is dirty straw. The mites breed in these places. They repro- i. 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 Pearl, Raymond, 1879-1940; Surface, Frank M. (Frank Macy), 1882- joint author; Curtis, Maynie R. (Maynie Rose), b. 1880, joint author. New York, The Macmillan Company
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectpoultry, bookyear1915
