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Johne's Disease
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<blockquote data-quote="Roadapple" data-source="post: 774150" data-attributes="member: 2919"><p>Kim Cook,an Agriculturel Reseach Service microbiologist at the agency's Animal Waste Management Research Unit in Bowling Green, Ky.,thought that may be unknown sources of contamination on farms. She thought that water troughs would provide a perfect home for bacteria, so she counted the Mycobacteria in the slimey layers in water on the sides of the most commonly used troughs: concrete, plastic, stainless steel, galvanized steel. She wanted to see if there were differences in the ability of the bacteria to adhere to and survive on the surfaces of the different materials.She found high concentrations of the bacteria on all the troughs within 3 days of inoculating the water with the bacteria, and they survived for more than 149 days.But the bacteria was lowest on the stainless steel. When she added 3 tablespoons of chlorine bleach per 100 gals. of trough water weekly, she found that by the end of the third week, less than 1% of the bacteria remained on the stainless and galvanized steel troughs. On the other hand, 20% remained on the plastic, and 34% remained on the concrete troughs. She said based on these results, using stainless steel water troughs with chlorinated water should be one of the recommended practices included in any Johnes control plan.</p></blockquote><p></p>
[QUOTE="Roadapple, post: 774150, member: 2919"] Kim Cook,an Agriculturel Reseach Service microbiologist at the agency's Animal Waste Management Research Unit in Bowling Green, Ky.,thought that may be unknown sources of contamination on farms. She thought that water troughs would provide a perfect home for bacteria, so she counted the Mycobacteria in the slimey layers in water on the sides of the most commonly used troughs: concrete, plastic, stainless steel, galvanized steel. She wanted to see if there were differences in the ability of the bacteria to adhere to and survive on the surfaces of the different materials.She found high concentrations of the bacteria on all the troughs within 3 days of inoculating the water with the bacteria, and they survived for more than 149 days.But the bacteria was lowest on the stainless steel. When she added 3 tablespoons of chlorine bleach per 100 gals. of trough water weekly, she found that by the end of the third week, less than 1% of the bacteria remained on the stainless and galvanized steel troughs. On the other hand, 20% remained on the plastic, and 34% remained on the concrete troughs. She said based on these results, using stainless steel water troughs with chlorinated water should be one of the recommended practices included in any Johnes control plan. [/QUOTE]
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