Hostname: page-component-586b7cd67f-dsjbd Total loading time: 0 Render date: 2024-11-30T23:17:45.270Z Has data issue: false hasContentIssue false
  • English
  • Français

Experimental Eimeria mitis infections in chickens

Published online by Cambridge University Press:  06 April 2009

L. P. Joyner
L. P. Joyner
Affiliation:
Ministry of Agriculture, Fisheries and Food, Veterinary Laboratory, Weybridge
Get access Rights & Permissions [Opens in a new window]

Extract

1. Methods are described for the isolation and maintenance of a pure strain of Eimeria mitis.

2. The prepatent period of the infection in chicks was 101 hr. The mean dimensions of the oocysts were 15·38 × 13·83μ, and sporulation occurred after 48 hr. at 60° F. (15·5° C.). The production of oocysts following infection with known numbers of oocysts is recorded.

3. When 500,000 or more oocysts of E. mitis were given to chicks aged 6, 17 or 26 days the growth rate of the birds was markedly reduced. Young chicks were most susceptible and a few deaths occurred when 6-day-old chicks received 2·5 million oocysts. E. mitis is unlikely to be of pathological importance under normal conditions of good husbandry practice.

4. Pathological lesions due to this species of Eimeria were not found in sections of intestinal tissues.

5. Developmental stages of this parasite were found throughout the whole of the small intestine.

6. The growth-retarding effects and oocyst production by E. mitis were controlled when 0·2% sodium sulphadimidine was given in the drinking water.

Type
Research Article
Information
Parasitology , Volume 48 , Issue 1-2 , May 1958 , pp. 101 - 112
Copyright
Copyright © Cambridge University Press 1958

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Allen, E. A. Quoted by Becker, E. R. (1934). Coccidia and Coccidiosis of Domesticated Game and Laboratory Animals and of Man. Monograph No. 2, Division of Industrial Science, Iowa State College.Google Scholar
Becker, E. R. (1956). Apropos oocyst measurements. J. Parasit. 42, (4), Suppl. 24.Google Scholar
Brackett, S. & Bliznick, A. (1950). The Occurrence and Economic Importance of Coccidiosis in Chickens. American Cyanamid Company, New York.Google Scholar
Brackett, S. & Bliznick, A. (1952). The reproductive potential of five species of coccidia of the chicken as demonstrated by oocyst production. J. Parasit. 38, 133–9.Google Scholar
Davies, S. F. M. (1956). Intestinal coccidiosis in chickens caused by Eimeria necatrix. Vet. Rec. 68, 853–6.Google Scholar
Edgar, S. A. (1955). Sporulation of oocysts at specific temperatures and notes on the prepatent period of several species of avian coccidia. J. Parasit. 41, 214–16.Google Scholar
Levine, P. P. (1943). The selective action of sulfaguanidine on avian coccidia. J. Parasit. 29, 362–3.Google Scholar
Patillo, W. H. & Becker, E. R. (1955). Cytochemistry of Eimeria brunetti and E. acervulina of the chicken. J. Morph. 96, 61–96.Google Scholar
Shortt, H. E. & Cooper, W. (1948). Staining of microscopical sections containing protozoal parasites by modification of McNamara's method. Trans. R. Soc. Trop. Med. Hyg. 41, 427.Google Scholar
Tyzzer, E. E. (1929). Coccidiosis in gallinaceous birds. Amer. J. Hyg. 10, 269–382.Google Scholar