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Show Dairyman Gives Data On Bang's Disease Control Lyman ti. Rich, extension dairyman dairy-man at Utah State Agricultural oilei,a asseits that Utahns have found in selling dairy stock that it is necessary to have cows and hei-i hei-i f ers free from tuberculosis and Bang's disease for replacements in dairy herds in other states of the West. "Outside markets can be of value only on the basis of a disease free herd, Mr. Rich reports. He also declared that experience in U.ah has shown that educational education-al work must go along with any program pro-gram cf the importance and magnitude mag-nitude cf disease-ccntrol measures. meas-ures. "While legislation is important im-portant and sometimes laws must oe enforced with respect to compelling com-pelling dairymen to comply with ocrtain regulations, a sound program pro-gram carries the full cooperation and leadership of the faim organizations organ-izations and the farmers themselves." them-selves." Mr. Rich cites a study made of herds in the Hyde Park district of Cache county by Dr. D. E. Madsen of the college veterinary science de; lartment in which he concludes that the great danger of introducing introduc-ing disease to clean herds lies in direct pasture contact (with Infection, Infec-tion, whether through pasturing with neighboring infected cattle or by purchasing infected cattle for herd additions. The safer procedure proce-dure would be to eliminate all diseased dis-eased cattle from the community. Special effort should be advanced in this direction. Danger of clean herds contacting contact-ing Bang's infection through irrigation irri-gation drainage from infected pastures pas-tures is rather remote under the condition existing in Hyde Park, Dr. Madsen concludes. Neither wos it shown that the practice of driving cows to and from pasture in a rather large group greatly increases in-creases frequency of the disease, since infection in nearly all newly infected herds was traceable either eith-er to purchase cf infected animals or to the practice of continuous contact by pasturing with a neighbor's neigh-bor's infected stock. This is particularly par-ticularly true with reference to dry cows or heifers. The study also shows that of cas reacting to the agglutination test. 50 per cent aborted, while 4.6 per cent of the non-reacting cows aborted during the same period. |