An experiment is described in which two sheep were artificially infested with 0. circumcincta and a third kept as an uninfested control. Plastic abomasal fistulae were inserted in these sheep and their erythrocytes were labelled with ⁵¹Cr. Radioactivity counts on blood and abomasal contents were done at regular intervals as well as other reactions being noted.
The main findings were:-
(i) No abnormal decrement in blood counts or increase in abomasal counts.
(ii) An increase in abomasal pH and decrease in pepsin concentration.
(iii) Anorexia and weight loss.
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