The prevalence of tapeworm infection of ducks raised in the rice field in Cang Long district of Tra Vinh province
The study was conducted to determine the prevalence of tapeworm infection of ducks raised in the rice field in An Truong and Tan An commune of Cang Long district in Tra Vinh province from 14 December 2020 to 21 May 2021. To have a scientific basis for recommending the prevention and treatment of tapeworm disease on ducks raised in the rice field as well as contributing to improve the productivity and raising ducks in this province, a total of 400 ducks was collected for necropsy. Overall, the prevalence of tapeworm infection of ducks raised in the rice field of this district was 70.0%. The ducks in two communes in this study were infected with this parasite by 68.5% in An Truong and 71.5% in Tan An. The infection rate of these parasite in ducks aged 2-4 months was lower than that in ducks aged over 4 months with 63.5% and 76.5%, respectively. The results were presented that there were 8 species of 4 genus of intestinal tapeworms including Dicranotaenia coronula (92.9%), Microsomacanthus compressa (63.6%), Microsomacanthus fausti (50.0%), Microsomacanthus paracompressa (49.3%), Diorchis formosensis (34.3%), Diorchis stefanskii (34.3%), Drepanidotaenia lanceolata (20.7%), and Diorchis ransonii (12.9%). The intensive infection of these species in ducks fluctuated in the range 4.121 to 4.688 parasites per duck. The rate of tapeworm grafting infection in ducks of 1-3 species, 4-6 species, and over 6 species were 13.6%, 29.3%, and 57.1%, respectively.
