adults, and not the immature forms.” Killing adults prevents passage of eggs back into the pasture and thus breaks the life cycle, so there won’t be as many immature fl ukes picked up by snails. “Basically the only way to
control deer fl ukes is to control deer, which is difficult or impossible. We are searching for new ways to control deer fl ukes. There are products available elsewhere in the world, but we may never have them here because most of them are carcinogens,” says Hawkins. At this point deer flukes are
not as widespread as cattle fl ukes. “We fi nd deer fl ukes along the Gulf Coast in certain parts of Texas and Louisiana. We also see them along the Great Lakes, such as Minnesota, Wisconsin, and a few in North Dakota,” he says. To know whether deer fl ukes are a problem in your
area, contact the state diagnostic lab and ask if they ever see deer fl ukes in necropsies, and where, advises Hawkins. “With de er populat ions
expanding, deer flukes are also expanding their areas. The same is happening with cattle liver fl ukes. We have ranchers contacting us who thought they never had fl ukes before but have them now,” says Hawkins. Timing of treatment for cattle
flukes is important. It will be different in different regions. “If people know they have fl ukes they should treat twice a year. Any time an animal dies on your place, get it necropsied or open it up yourself and check the liver. If there is severe damage, you can see it,” Hawkins says. For treating cattle fl ukes, you need to know the life cycle of fl ukes
in your area and how long it takes for immature stages to become adults. “Transmission season is when
it’s wet. Treat cattle 8 to 12 weeks after the height of transmission season. When conditions begin to dry, treat about 8 weeks later. Some areas have some transmission year- round, such as Florida or South Texas. Your strategy there would be to treat for fl ukes each time you deworm,” says Hawkins. “Pay special at tent ion to
replacement heifers and young bulls. If you are not sure about flukes on your place, at least 1 deworming per year [with a product that kills fl ukes] for the cow herd is a good idea, and probably 2 for the replacement heifers — just to make sure they are gaining and producing to their potential and to save on feed costs.”
Ranger Gate Co.
Yoakum, Texas 800-722-1299
www.rangergate.com sales@rangergate.com
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• 3,500 Lb. Axel Standard; also 5,200 Lb. Axle Option: Standard
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• New Tires & New Axles: Standard • 16-gauge Feed Box, Standard; also 14-gauge Feed Box Option
• 7 1/2’ Wide Sliding Top Doors for Easy, Trouble Free Loading
• 1/4” Heavy Poly ”Never Rust Out” Feed Trough: Other Options Available
• 1/4” Poly “Easy Open / Easy Clean-Out” Door: Standard
• Hog Guard Options Available April 2014 The Cattleman 77
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