Experimental epidemiological study on the use of phenothiazine in the profilaxis of chicken ascariasis

Abstract

In the experimental epidemiological study on the use of phenothiazine in the profilaxis of chicken ascariasis the author was able to conclude that:
1 — The number of worms found in the intestines of susceptiblc chicken that lived on soil previously inhabited by fowls infected with A. galli and treated continuosly with phenothiazine by oral route, is significantly lower than that observed in the intestines of susceptible chicken that lived on soil previously inhabited by fowls infected and not treated.
2 — The number of worms found in the intestines of susceptible chicken that lived on soil previously treated with phenothiazine and inhabited by birds infected with A . galli, is significantly lower than that observed in the intestines of susceptible chicken that stood on soil not treated with the drug and inhabited by infected animals.
3 — The number of worms found in the intestines of chicken that stood on soil inhabited by birds infected with A. galli and treated continuously with phenothiazine, by oral route, is significantly lower than that observed in the intestines of susceptible chicken that stood on soil treated with the drug and inhabited by infected animals.
4 — The number of worms found in the intestines of susceptible chicken that stood on soil that had been inhabited by birds infected by A. galli and treated continuously with phenothiazine, by oral route administered with stomach tube, does not differ significantly from that observed in susceptible chicken that lived on soil previously inhabited by infected animals that received continuously the same drug in their rations.
5 — The mortality observed in susceptible chicken that stood on soil previously inhabited by chicken infected with A. galli and treated continuously with phenothiazine, by oral route, is significantly lower than the mortality observed in susceptible chicken that lived on soil that had been inhabited by infected birds that did not received phenothiazine by oral route; the manner by which phenothiazine was administered, either by tube or mixed in the ration, does not determine a significant difference in the mortality; when the drug is not given orally, the spreading or not of it on soil does not cause a significant difference in mortality as well.
6 — The foregoing outcomes provide a set of information to recommend continuous administration of phenothiazine mixed in ration, to infected chicken with A. galli, as a profilaxis measure.