. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. 24 ClRCtTLAR 338, V. S. DEPT. OF AGRICULTURE magnesia as a purgative for puppies and young dogs; this may be given immediately following carbon tetrachloride or tetrachlorethylene but an amount sufl&cient to produce an adequate bowel movement should be administered. Fats, oils, and cream should be excluded from the diet for several days prior to the administration of either carbon tetrachloride or tetrachlorethylene. This applies also in the case of cats. Tetrachlorethylene is the drug of choice for the re


. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. 24 ClRCtTLAR 338, V. S. DEPT. OF AGRICULTURE magnesia as a purgative for puppies and young dogs; this may be given immediately following carbon tetrachloride or tetrachlorethylene but an amount sufl&cient to produce an adequate bowel movement should be administered. Fats, oils, and cream should be excluded from the diet for several days prior to the administration of either carbon tetrachloride or tetrachlorethylene. This applies also in the case of cats. Tetrachlorethylene is the drug of choice for the removal of hook- worms from cats, being much safer for use in cats than is carbon tetrachloride. The dose rate and the manner of administration are the same as for dogs. In cases of concomitant ascarid infestations in cats, a purgative should be given as outlined above. Ordinarily treatments for worms should not be given to pups until they are weaned, but usually pups 2 weeks old or older may be given tetrachlorethylene with safety. Animals with severe inflammation of the digestive tract appear to be bad risks for this treatment as for most anthelmintic treatments. In connection with the treatment, the same preventive measures given for ascarids should be employed. WHIPWORM INFESTATION OavM.—The whipworm, Trichuris vulpis (synonym, T. depress- iuscula), is so named because of its resemblance to a tiny whip (fig. 21), the short, thick posterior portion of the body forming the handle and the slender, anterior portion, which is about three times as long, form- ing the lash. It is from to 3 inches ( to centimeters) long. The eggs (fig. 22) produced by the female worms are lemon- shaped, with a knob at each pole. These worms are very common in dogs in the United States but are not known to occur in cats. The worm eggs pass in the feces and an embryo develops in each egg. As a rule this development is slow, usually requiring several. FiGUKE 21.—The dog whipworm, Trichuri


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