The responses of different strains of Eimeria acervulina and Eimeria tenella to medication.

  title={The responses of different strains of Eimeria acervulina and Eimeria tenella to medication.},
  author={Stanley J. Ball},
  journal={Research in veterinary science},
  volume={7 3},
  • S. J. Ball
  • Published 1 July 1966
  • Biology, Medicine
  • Research in veterinary science
SUMMARY The responses of 3 strains of Eimeria acervulina and 4 strains of Eimeria tenella to a number of compounds were examined and showed that different strains of the same species vary in their drug susceptibility. The drug-antagonist relationship between sulphaquinoxaline and p-amino-benzoic acid in infections with a sulphonamide-resistant strain of E. acervulina appeared to be different from that of 2 sensitive strains. The results of tests in which strains of the same species were… 
Coccidiosis: problems arising from the development of anticoccidial drug resistance.
Strains of species of Eimeria vary in their response to coccidiostatic drugs, may be due partly to inherent heterogeneity, independent of chemotherapeutic experience, and failure of prophylaxis may occur in the presence of resistant strains.
Plasmodium gallinaceum and subsequent Eimeria acervulina infections in chickens are not synergistic.
An experiment on Plasmodium gallinaceum and Eimeria acervulina revealed no interaction of any kind between these species and a re-examination of the raw data shows that no evidence of synergism between malarial and coccidial infections in chickens has so far been produced.
Effects of different infection rates on the oocyst production of Eimeria acervulina or Eimeria tenella in the chicken.
It is suggested that standard curves for normal infection rate — reproductive potential relationships under strictly specified conditions may be of value in choosing appropriate infection rates for critical experimental work to assess the effects of anticoccidial compounds on oocyst production.
Coccidiosis: experimental analysis of drug resistance.
Abstract Serial propagation of avian coccidia in birds fed mash containing coccidiostats results in the acquisition of a resistance for the specific coccidiostat. This is stable and persists
Relative virulences of a drug-resistant and a drug-sensitive strain of Eimeria acervulina, a coccidium of chickens.
  • R. Williams
  • Medicine, Biology
    Veterinary parasitology
  • 2006
There was no difference between the virulences of the two strains of E. acervulina that could be attributed to the drug-resistance of one of them, and the FCR of infected chicks was usually poorer than that of uninfected chicks.
Anticoccidial drugs: screening methods.
Abstract A review of thirteen primary screens for anticoccidial activity utilizing Eimeria tenella as the screening organism in chicks reveals differences among the following: breeds of birds used,
Evaluation of the protective efficacy of the anticoccidial vaccine Coccivac-B in broilers, when challenged with Egyptian field isolates of E. tenella
It is concluded that Coccivac B® produced variable degrees of protection in the birds infected with the five different strains of E. tenella.
Coccidiosis: evaluation of techniques for battery testing of field-collected Eimeria oocysts.
Measurements of comparative performance of anticoccidials were less variable and more sensitive to differences when expressed as relative performance compared with normal uninoculated birds, than when expressed by comparison of depression in performance from normal birds with that shown by inoculated unmedicated birds.
The mode of action of anticoccidial quinolones (6-decyloxy-4-hydroxyquinoline-3-carboxylates) in chickens.
  • R. Williams
  • Biology, Medicine
    International journal for parasitology
  • 1997
An updated account of the anticoccidial mode of action of quinolones in the chicken shows that they may nevertheless be expected to exert a therapeutic effect against drug-sensitive coccidia in interrupted regimes that allow the later cidal effect to come into play.
The Incidence of Drug-Resistant Strains of Eimeria Species in Chickens in Great Britain, 1964/65
There was a tendency for more strains of the coccidia to be resistant to coccidiostats with which they had had recent contact, and Coccidiostat ‘P’ gave the best overall control, although other drugs had their spectra of activity.