| the polymorphic relationship of cooperia oncophora (railliet, 1898) ransom, 1907, to cooperia surnabada antipin, 1931 (nematoda: trichostrongylidae). | | 1971 | 4928654 |
| prevalence, geographic distribution, and hosts of cooperia surnabada antipin, 1931, and c. oncophora (railliet, 1898) ransom, 1907, in the united states. | | 1971 | 5102701 |
| activity of doramectin against nematode endoparasites of cattle. | a series of 28 controlled anthelmintic studies, involving 634 cattle, was conducted throughout north america and europe to evaluate the efficacy of doramectin against a broad range of gastrointestinal parasitic nematode species and lungworms in naturally and experimentally infected animals. within each study, one or two groups were treated with doramectin at 200 micrograms kg-1 and another group received no drug treatment. worm burdens were estimated by standardised techniques, and efficacy asse ... | 1993 | 8236735 |
| efficacy of doramectin against field nematode infections of cattle in latin america. | two studies were conducted, one in argentina and one in brazil, to evaluate the therapeutic efficacy of doramectin administered subcutaneously at a dose rate of 200 micrograms kg-1 (1 ml per 50 kg) to cattle harboring mixed field infections of gastrointestinal nematodes. in each trial, 20 heifers were randomly allocated to a control or treated group of ten animals each, on the basis of fecal egg counts. animals in the treated and control groups received an injection of doramectin or saline in th ... | 1993 | 8236736 |
| genetic evidence indicating that cooperia surnabada and cooperia oncophora are one species. | sequences of the second internal transcribed spacer (its-2) of ribosomal dna were determined for the trichostrongylid nematodes cooperia surnabada and cooperia oncophora, to test the hypothesis that they represent one species. also included for comparison were other morphologically distinct species within the genus, namely cooperia punctata and cooperia curticei. there were no differences in the consensus its-2 sequences between c. oncophora and c. surnabada, whereas each taxon differed from c. ... | 1998 | 9512997 |
| a multiplex pcr assay for differentiating economically important gastrointestinal nematodes of cattle. | a multiplex polymerase chain reaction (pcr) test was developed for identifying gastrointestinal (gi) nematodes that commonly infect cattle. this assay was developed using adult-derived genomic dna and shown capable of discriminating parasite eggs from the feces of experimentally-infected animals at both the species and genus levels. sequence data from internal (its) and external (ets) transcribed spacers of the ribosomal dna (rdna) repeats as well as the 3'-end of the small subunit rdna and 5'-e ... | 2001 | 11390072 |
| cooperia mcmasteri and cooperia surnabada in the united states. | | 1958 | 13576268 |
| efficacy of a topical formulation of eprinomectin against endoparasites of cattle in new zealand. | two controlled studies involving 24 cattle were conducted in new zealand to determine the efficacy of a topical, non-flammable formulation of eprinomectin against induced and naturally acquired nematode infections. in trial 1, nematode infections were induced on day -5 with third-stage larvae of cooperia spp., haemonchus contortus, ostertagia ostertagi and trichostrongvlus colubriformis so that the nematodes would be at the fourth larval stage when the cattle were treated. in trial 2, cattle had ... | 1997 | 16031938 |
| [forming of gastro-intestinal nematodes fauna of free ranging european bison in bialowieza primeval forest during last 17 years (1984-2001)]. | 28 european bison of both sexes and in different age shot in białowieza primeval forest in january 1984, (10 animals), january 1992 (10 animals) and in january and the beginning of february 2001 (8 animals) have been necropsied. the examined animals in mentioned years were of similar age. there were examined abomasa and duodena of shot animals. all necropsied bison were infected with gastro-intestinal nematodes. the highest intensity of infection with nematodes of abomasum was found in 1992 year ... | 2002 | 16894720 |
| nematode burdens of pastured cattle treated once at turnout with eprinomectin extended-release injection. | the efficacy of eprinomectin in an extended-release injection (eri) formulation was evaluated against infections with third-stage larvae or eggs of gastrointestinal and pulmonary nematodes in cattle under 120-day natural challenge conditions in a series of five studies conducted in the usa (three studies) and in europe (two studies). for each study, 30 nematode-free (four studies) or 30 cattle harboring naturally acquired nematode infections (one study) were included. the cattle were of various ... | 2012 | 23273928 |
| the efficacy of eprinomectin extended-release injection against naturally acquired nematode parasites of cattle, with special regard to inhibited fourth-stage ostertagia larvae. | the efficacy of eprinomectin in an extended-release injection (eri) formulation in the treatment of cattle harboring naturally acquired nematode populations (including inhibited nematodes) was evaluated. five studies were conducted under a similar protocol in the usa, the uk, and in germany. all study animals were infected by grazing naturally contaminated pastures. the adequacy of pasture infectivity was confirmed by examining tracer calves prior to allocation and treatment of the study animals ... | 2012 | 23273781 |
| an eprinomectin extended-release injection formulation providing nematode control in cattle for up to 150 days. | a series of 10 dose confirmation studies was conducted to evaluate the persistent activity of an extended-release injectable (eri) formulation of eprinomectin against single point challenge infections of gastrointestinal and pulmonary nematodes of cattle. the formulation, selected based on the optimal combination of high nematode efficacy, appropriate plasma profile, and satisfactory tissue residue levels, includes 5% poly(d,l-lactide-co-glycolic)acid (plga) and is designed to deliver eprinomect ... | 2012 | 23273777 |
| reevaluation of efficacy against nematode parasites and pharmacokinetics of topical eprinomectin in cattle. | a study was conducted to confirm the efficacy of topical eprinomectin against nematodes and to evaluate the pharmacokinetics in cattle prevented from having physical contact with other cattle and from self-grooming. sixteen male brown swiss calves were infected with larvae of recently isolated nematode parasites. inoculation was scheduled so that the nematodes were expected to be adults at the time of treatment. animals were blocked based on pretreatment body weight and randomly allocated to the ... | 2012 | 22638921 |