Influence of complex parasitocide on the dynamics of helminth infestation of sheep

The purpose of the study was to evaluate the effect of complex therapeutic antiparasitic means of group application of AFG AA on the seasonal development of the main infestations in sheep of the Altai Mountains. Coprological studies have established that the infestation of sheep with helminths of the suborder Strongylata during the year amounted to 65.0–100.0%, moniezia – 55.0, pulmonary strongylates – 36.0, whipworms and dicrocelia – 35.0% each. The average annual intensity of invasion by gastrointestinal strongylates reached 77.4%, whipworms 26.2, protostrongylus 25.4, moniezia12.4, and dicrocelia 8.4%. Nematodes accounted for 84.2% of the helminth complex, trematodes – 8.8, cestodes – 7.0 %. Gastrointestinal strongylates were completely dominant (47.9%), whipworms (21.1%) and pulmonary strongylates (15.2%) were represented in significant numbers. It was found that antiparasitic grain-forage granules AFG AA are effective against all major groups of sheep helminths. In whip-worm infection and dicroceliosis, the efficiency was 100.0%, gastrointestinal strongylatosis – 98.3, pulmonary strongylatosis – 93.0, monieziasis – 91.0%. It was shown that in sheep farms in the region, under favorable epizootic conditions for main helminthiases, a scheme of double (spring and autumn) use of complex therapeutic agents with a wide parasitocidal spectrum of action can be implemented. The use of drugs made it possible to keep the number of parasites and the infection of animals by them at a relatively low level. Animals we kept during winter stall-feeding period with fairly low indicators of extensiveness (IE = 10,0–20,0%) and intensity (nidus index = 14.7–18.9 eggs/larvae per gram of feces) of infection.

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