. Special report on diseases of cattle. Cattle. 520 DISEASES OF CATTLE. give the animals a foothold. A draining pen with floor sloping back toward the vat is generally provided. The dip should be used warm, 100° to ;)° F., and the cattle should be held in the vat for two minutes to insure thorough action of the dip. The head of each animal should be ducked at least once. Care should be taken that the vat contains a sufficient depth of fluid to swim the animals to be dipped. The dip- l^ing fluid may be heated from a steam boiler bj' pipes or hose, or water heated in large iron caul- dro
. Special report on diseases of cattle. Cattle. 520 DISEASES OF CATTLE. give the animals a foothold. A draining pen with floor sloping back toward the vat is generally provided. The dip should be used warm, 100° to ;)° F., and the cattle should be held in the vat for two minutes to insure thorough action of the dip. The head of each animal should be ducked at least once. Care should be taken that the vat contains a sufficient depth of fluid to swim the animals to be dipped. The dip- l^ing fluid may be heated from a steam boiler bj' pipes or hose, or water heated in large iron caul- drons or tanks may be used for charging the vat, and hot water with a proper quantity of dip added from time to time as the dipping fluid becomes cool. The vat for use in tick eradication (de- scribed in Bureau of Animal Indvistry Circular 207) if sup- plied with heating facilities may be used in treating cattle for mange, but should be of gTeat€r length if many cattle are to be treated. If Beaumont oil emulsion is used, ohe treatment will be sufficient and the dip may be used cold. Beaumont oil and similar ci'iule petroleums, however, are difficult to obtain and are rarely used. With other dips two treatments are required, the second treatment being given 10 days after the first. The second treatment is necessary to kill the few parasites which sometimes escape at the first treatment, either in the egg stage or as fecundated Fic 16.—Mite which causes psoroptjc scab of sheep— enlarged about 100 times. The mite of psoroptic cattle mange is almost identical in appearance. LIME-SULPHUR DIP. The lime-sulphur dip is made in the proportion of 1"2 pounds of unslaked lime (or 16 pounds o«f commercial hydrated lime—not air-. 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 United States. Bureau
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