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<blockquote data-quote="Lucky_P" data-source="post: 1536878" data-attributes="member: 12607"><p>I, too, have concerns about whether or not adequate levels and consistent consumption of a tub product (I didn't know there were any) will adequately prevent additional clinical cases - if there are other animals in the herd in the incubation phase of the disease. </p><p>Blood testing(cELISA serology) will identify infected animals, but will not differentiate between animals that are in the incubation phase... soon to become clinically ill ... and those that are persistently infected, with low-level parasitemia(these animals will not become clinically ill, but may serve as a continued source of Anaplasma organisms to infect the next generation(s) of ticks, which then amplify and transmit to naive cattle. </p><p></p><p>I'm retired and have not been in active veterinary practice for some time... not sure the new VFD regs, which took effect in Jan 2017 even allow 'top-dressing' of feed with Aureomycin anymore... I was under the impression - though possibly mistakenly - that the CTC had to be mixed into a prepared feed or mineral supplement at allowed concentrations in order to meet the letter of the laws.</p></blockquote><p></p>
[QUOTE="Lucky_P, post: 1536878, member: 12607"] I, too, have concerns about whether or not adequate levels and consistent consumption of a tub product (I didn't know there were any) will adequately prevent additional clinical cases - if there are other animals in the herd in the incubation phase of the disease. Blood testing(cELISA serology) will identify infected animals, but will not differentiate between animals that are in the incubation phase... soon to become clinically ill ... and those that are persistently infected, with low-level parasitemia(these animals will not become clinically ill, but may serve as a continued source of Anaplasma organisms to infect the next generation(s) of ticks, which then amplify and transmit to naive cattle. I'm retired and have not been in active veterinary practice for some time... not sure the new VFD regs, which took effect in Jan 2017 even allow 'top-dressing' of feed with Aureomycin anymore... I was under the impression - though possibly mistakenly - that the CTC had to be mixed into a prepared feed or mineral supplement at allowed concentrations in order to meet the letter of the laws. [/QUOTE]
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