efficacy of a pour-on formulation of eprinomectin (mk-397) against nematode parasites of cattle, with emphasis on inhibited early fourth-stage larvae of ostertagia evaluate efficacy of topically applied eprinomectin against inhibited early fourth-stage larvae (il4) of ostertagia spp in calves.19979099383
the presence of benzimidazole resistance mutations in haemonchus placei from us cattle.haemonchus populations were collected from cattle from mid-western and eastern southern us (four and six populations, respectively) to determine the relative prevalence of haemonchus contortus and haemonchus placei and the frequency of the three isotype-1 β-tubulin polymorphisms associated with benzimidazole resistance. a minimum of 32 individual adult worms were genotyped at position 24 of the rdna its-2 for each population to determine species identity (296 worms in total). one population from ...201424916341
occurrence of gastrointestinal parasites in georgia cattle.a survey of gastrointestinal nematodes in georgia cattle was conducted from 1968 through 1973 from actual worm counts from viscera of 145 slaughtered beef cattle or from egg counts made from fecal samples from 3,273 beef and 100 dairy cattle. beef cattle were grouped as calves, yearlings, and cows. dairy cattle were grouped as calves, replacement heifers, and cows. results of fecal examinations positive; 99.5, 99.3, 99.6, and 41.2% of the calves, yearlings, drylot calves, and cows, respectively, ...1975123711
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