| Abstract:In order to provide reasonable medication guidance for the extermination of parasites in goats, Shanbei white cashmere goats were selected for deworming test in digestive tract nematodes and the dynamic change of parasites after deworming. in this test, three common deworming drugs (Ivermectin injection, Fenbendazole powder, Ivermectin Fenbendazole premix) were used.Three methods of salt water flotation, insect egg counting and parasite autopsy were used to detect the infection status of digestive tract nematodes before and after deworming in Shanbei white cashmere goat, the purpose is to study the dynamic change of digestive tract nematodes in one and two months after deworming. The results showed that 6 species of nematodes were identified, including Hemonchus contortus , Oesophagostomum spp., Trichostrongylus sp., Bunostomum trigonocephalum , Chabertia sp., Nematodirus sp., in which the dominant species was Hemonchus contortus . After the deworming, the worm egg negative rate and egg reduction rate of the Ivermectin injection group were 6.25% and 65% , the egg negative rate and egg reduction rate of the Fenbendazole group were 31.25% and 84.21% , and Ivermectin and Fenbendazole premix group's worm egg negative rate and worm egg reduction rate were 50% and 77.27%, respectively. All infected digestive tract nematodes in cashmere goats had resistance to deworming agents. In one month after deworming, the infection rate and infection intensity of digestive tract nematodes in Shanbei white cashmere goat increased, but it did not reach the pre-deworming level. In two months after deworming, the infection rate and infection intensity of digestive tract nematodes reached the level before deworming. The results showed that ivermectin fenbendazole premix can be used as a common deworming drug for digestive tract nematodes in Shanbei white cashmere goat, and preventive deworming every two months is recommended to reduce the harm and economic losses. |
