Efficacy of Locally Available Anthelmintics against Helminths of Dairy Cows in Gazipur, Bangladesh
Efficacy of Locally Available Anthelmintics against Helminths of Dairy Cows in Gazipur, Bangladesh
Md. Aminul Islam1*, SM Mostafizur Rahaman Sumon1, ANM Aminoor Rahman2, Fahima Khatun3
ABSTRACT
Parasitic diseases are crucial factors in reducing dairy production. To find out the efficacy of locally available anthelmintics against helminths, anthelmintic treatments were given to dairy cows in five different farms of Gazipur, Bangladesh and the helminth parasitic loads of dairy cows were determined before and after treatment by Modified Stoll’s Dilution Technique using a McMaster counting chamber. A total of 85 faecal samples from five different dairy farms were examined. The overall infection rate of helminths in dairy cows is 37.65%. A total of five different types of nematodes were observed in all the investigated dairy farms. The highest infection rate (11.76%) and the lowest infection rate (4.71%) was found for Neoascaris spp. (Toxocara spp.) and Fasciola spp., respectively. Hemonchus spp. were fully (100%) susceptible to Ivermectin, Fenbendazole, and Levamisole. Neoascaris spp. were shown 33.33% and 16.67% resistant against Ivermectin and Fenbendazole, respectively. The Fasciola spp. was 66.67% resistant against Triclabendazole and the Trichuris spp. was the highest resistant against Ivermectin injection (100%) in all the investigated dairy farms. These findings are crucial for the selection of anthelmintics for the treatment of various types of nematodes in dairy cows and might be crucial in preventing anthelmintic resistance in dairy cows.
Keywords | Anthelmintic resistance, Dairy cows, Effectiveness, Helminth infections, Local anthelmintics
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