Diseases of cattle, sheep, goats and swine (1920) (20940377466)

Title: Diseases of cattle, sheep, goats and swine
Identifier: diseasesofcattle00mous (find matches)
Year: 1920 (1920s)
Authors: Moussu, Gustave, 1864-; Dollar, Jno. A. W. (John A. W. )
Subjects: Veterinary medicine
Publisher: Chicago : American Veterinary Pub. Co.
Contributing Library: NCSU Libraries
Digitizing Sponsor: NCSU Libraries



Text Appearing Before Image:
Fig. 119.—Ventral and apex views of the head of the fringed tapeworm (Thijsanosoma actinioides). X 17. (After Stiles, 1893.) as at times it forms a veritable scourge to the sheep industry of North America and South America. Disease. The disease in sheep caused by the fringed tapeworm has l)een studied in detail by Curtice, who considers that next to scab it is the most important sheep disease of the western plains of North America. The financial loss it causes is extensive, and results from the failure of the lambs to fatten, the small crop of wool, and the weakening of the animals, so that they cannot withstand cold winter weather. The para- sites develop slowly, and are present in considerable numbers before their
Text Appearing After Image:
Fig. 120.—Segments of the fringed tapeworm (Thysanosoma actinioides), showing canals and nerves, and (/) frmged border, (t) testicles, and (ut) uterus. Enlarged. (After Stiles, 1893.) presence is suspected. Toward September the lambs fail to grow as they should ; in November the symptoms are marked. First, the w^orms pro- duce local irritation of the intestine, which finally develops into a chronic catarrhal inflammation ; their presence in the gall-ducts produces similar results, and obstructs the flow of bile ; infected lambs are large-headed, under-sized, and hide-bound ; their gait is rheumatic, and they appear more erratic than the other sheep, standing oftener to stamp at the sheep-dogs or herds, and lagging behind the flock when driven ; the