3/18/2024 0 Comments Longhorned tick identificationTreat all animals in a herd for ticks at the same time.Increased fly burdens at several days after a heavy rain may indicate the need to retreat the animal. Be aware that heavy rain may wash pesticides off the animal. Apply along the topline of the animal in a narrow strip. Use ivermectin at the rate of 1 ml per 22 pounds of body weight. Pour-ons: Use pour-ons for heavy or extreme tick numbers.ALT management may require recharging devices every 2-3 weeks. Recharge devices regularly following the pesticide label.Rubs hung in front of mineral feeders are helpful, but cattle do not visit these feeders every day. Pinch points: Place backrubbers, bullets, and similar devices in a pinch point (e.g., gateways, between posts, entry to creep feeders, etc.) where cattle are forced to walk under or past on a daily basis, such as to visit a water source.Bullets also distribute pesticide along the head and flanks. Vertical strips hung from a backrubber help apply material to the head and flanks as the cattle move past. Hang rubs in such a way that cattle must contact the rub as they move past, spreading the pesticide along the top of their bodies. Use backrubbers and siderubbers (“bullets”) or similar devices charged with phosmet or permethrin.Keep records of when tags were placed so you know when to replace them. Replace ear tags following the label recommendations. Check labels for any limitations for beef or dairy cattle. Tag both adults and calves if label allows. Use the number of ear tags per animal specified on the label for tick control. Follow all label instructions for pesticide- impregnated ear tags.Rotate pesticide classes of ear tags to slow the development of resistance. Dependency on permethrin ear tags may accelerate pesticide resistance in ALT. Ear tags: Use abamectin or beta-cyfluthrin ear tags for low numbers of ticks.Consider using pesticide-impregnated ear-tags along with backrubbers and other devices. A single pesticide application method may not be fully effective against ALT.Consider chemical control for ALT from March into November. Tick control is highly recommended during these time periods, but ALTs are active during much of the year. There appears to be a high risk of cattle disease transmission by ALT in February-March and August-September.Once ALT is confirmed on your animals, you should assume it is established in the area and that management for this tick will be an on-going process from now on.Submit tick samples to your local extension agent for species confirmation. Animals may have large numbers of ALT, but only a few ALTs may be sufficient to transmit cattle disease.Cattle with low weight gain, are lethargic or anemic, have patchy hair or generally look unthrifty should always be inspected for ticks.Tick larvae, nymphs, and adults may all be found at the same time on a single animal. Focus on the head and the neck, but also check the flanks and back, the armpits and groin, and under the tail. ![]() The ALT is small and may go unnoticed with only a quick look. Managing the Asian Longhorned Tick: Checklist for Best Management Practices for Cattle Producers
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