efficacy of albendazole and levamisole in sheep against thysanosoma actinioides and haemonchus contortus from the edwards plateau, texas.lambs naturally infected with thysanosoma actinioides and naturally and experimentally infected with haemonchus contortus were used in a controlled experiment to determine the anthelmintic activity of albendazole as compared with levamisole. the lambs were given 10,000 h contortus larvae 25 to 35 days before treatment, were slaughtered 7 to 9 days after treatment, and were housed on concrete from the time of treatment until slaughter. in lambs given doses of 7.5 mg or 3.8 mg of albendazole/kg or ...19807369618
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