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PubMed1976

Uredofos: anthelmintic activity against nematodes and cestodes in dogs with naturally occurring infections.

A new broad-spectrum anthelmintic, uredofos, was tested in 146 dogs by single and multiple oral dosing. Single doses of 100 and 50 (but not 25) mg/kg were totally effective in removing Dipylidium caninum and Taenia spp from 46 dogs with infections of tapeworms. Among groups of 15 to 20 dogs, the average percentage efficacies against Toxocara canis for single soese of 100, 50, and 25 mg/kg were 98, 96, and 81%, respectively. The average percentage of efficacies against hookworm (Ancylostoma caninum) were greater than 96% in dogs treated with single doses of 100, 50, or 25 mg/kg and were 100% in the 35 dogs given 2 or 3 treatments (24-hour intervals) at dose levels of either 25 or 50 mg/kg. The whipworm, Trichuris vulpis, was not efficaciously eliminated by single doses of 25, 50, and 100 mg/kg (av percentage of efficacies of 30, 35, and 71%, respectively). Efficacy against T vulpis markedly improved when 2 doses were given at a 24-hour interval (av percentage of efficacies were 89% at dose level of 25 mg/kg and 99% at dose level of 50 mg/kg). At either dose (25 or 50 mg/kg), 3 daily treatments were no more efficacious against whipworms than were 2 doses. There was no evidence of drug toxicosis in any dogs tested. It was concluded that uredofos is highly effective against canine tapeworms, ascarids, and hookworms when given as a single dose of 50 mg/kg and against whipworm when given at dose level of 50 mg/kg/day for 2 days.

Ancylostomiasis↗
PubMed1975

Developmental physiology of cestodes. XIV. Roughage and carbohydrate content of host diet for optimal growth and development of Hymenolepis diminuta.

Diets of rats infected with Hymenolepis diminuta (CESTODA: Cyclophyllidea) were altered with respect to carbohydrate content and to roughage, and the effects on worm growth and development were studied. Compared to worms from rats fed a 56% glucose diet, those on a 56% starch diet were heavier at 10 and 15 days and had more immature proglottids at 5 days, mature prglottids at 10 days, and mature and gravid proglottids at 15 days postinfection. In addition, worms from rats fed the starch diet contained a higher carbohydrate concentration and a lower lipid concentration from those fed the glucose diet. Worms from rats fed diets with combinations of carbohydrates such as 51% starch-5% sucrose and 51% starch-5% lactose were not different from those fed the 56% starch diet. If rats were fed a pellet diet (Purina Laboratory Chow), the worms grew substantially larger than those from rats fed the 56% starch or combination diets. The differences could be overcome if a 6% roughage component were included in the 56% starch diet. Therefore, the starch-roughage diet here presented is recommended as the optimal defined diet for studies of the development of H. diminuta in the definitive host.

Animals↗