Dichlorophen compounds were examined for anthelmintic efficacy on
Raillietina cesticillus and effect on egg production of hens.
(1) A preparation containing 300mg/kg of dichlorophen and 300mg/kg of phenothiazine was given to 5 Lockhorn cockerels experimentnally infected with
R. cesticillus without previous starvation (Table. 1). No tapeworms were found in their small intestines, except some ascarids which were found at postmortem examination made 4 days after the medication (Table 3).
(2) A preparation containing 120-150mg/kg dichlorophen and 120-150mg/kg phenothiazine was given to 8 White Leghorn and New Hampshire (laying hens) naturally infected with
R. cesticillus and
R. echinobothrida (Table 4). As a result, it did not have 100per cent anthelmintic effect on tapeworms.
This preparation was given to 10 birds 7 days after the first medication (Table 4), but it did not exercised 100per cent anthelmintic effect on tapeworms.
(3) A preparation containing 120-150mg/kg of dichlorophen, 100-130mg/kg of phenothiazine, and 50-80mg/kg of piperazine sulfate was administered to 6 birds in which the first and the second medication had failed to remove tapeworms. As a result, no segments were found in the droppings of all the birds, except one, for 26 days after the medication.
(4) Administation of this preparation did not interfere with the egg production of laying hens.
(5) It is obvious that the preparations containing dichlorophen, phenothiazine, and piperazine were effective in removing
R. cesticillus and
R. echinobothrida.
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