Control of some internal parasites of chinchillas.

An unidentified coccidia was found in chinchillas. Treatment with sulfamethazine apparently eradicated the infection from several herds. Ostertagia females and 1 Trichostrongylus colubriformis male were also found in chinchillas, causing emaciation. A dose of thiabendazole of 100 mg./kg. of body weight was effective against the roundworms, but it was toxic. A dose of trichlorphon, 100 mg./kg. of body weight, was effective and safe. Hymenolepis infection caused emaciation and death. Treatment with doses of niclosamide, 200 mg./kg. of body weight, was successful in removing tapeworms, ending deaths, and improving the condition of the host. It did not eradicate the infection.