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  • Title: Analysis of the strongylid nematodes (Nematoda: Strongylidae) community after deworming of brood horses in Ukraine.
    Author: Kuzmina TA, Kharchenko VA, Starovir AI, Dvojnos GM.
    Journal: Vet Parasitol; 2005 Aug 10; 131(3-4):283-90. PubMed ID: 15979240.
    Abstract:
    Communities of intestinal helminths in horses are commonly studied post mortem. The study objectives were here to examine the species composition of the strongylid community in brood horses in Ukraine after deworming with an aversectin drug Univerm. The site distribution of the strongylid species was analysed according to dynamics of their expulsion in faeces. Forty-four horses of different ages from Poltavska oblast (22 horses), Kyivska oblast (17 horses) and Sumska oblast (5 horses) of Ukraine were included in the study. Horses were treated with Univerm anthelmintic (0.2% aversectin) at a dose rate of 0.5mg aversectin preparation per kg body weight. Faecal sampling (200 g each) was performed at 24, 36, 48 and 60 h post treatment, and all nematodes expelled were collected and identified. The largest numbers of strongylids were expelled at 24--36 h after treatment. Twenty-five nematode species from the subfamilies Strongylinae and Cyathostominae were identified. The number of strongylid species found per horse ranged from 7 to 20, on an average 11+/-3.6 (S.D.). The number of cyathostomin species found per horse ranged from 7 to 16, on an average 10+/-2.3 (S.D.). Cylicocyclus nassatus and Cyathostomum catinatum were the most dominant species were found in 100% of horses, amounting to 36.3% and 17.6% of the total number of strongylids collected, respectively. C. longibursatus, C. ashworthi, Cylicostephanus calicatus, C. leptostomus and C. minutus were identified in more than 80% horses and represented 39.9% of the total number of strongylids collected. The dynamics of the different strongylid species expelled was irregular. Correlation between the time of cyathostomin species expulsion in faeces and their predicted localisation inside the horse intestine was found. Species mainly localised in the caecum were found in faeces later than those species localised in the dorsal and ventral colons. Larvae and adult Parascaris equorum, Oxyuris equi and botfly larvae from the genus Gasterophilus were also found in horse faeces. This investigation shows that is possible to study the horse strongylid community after deworming with aid of an aversectin drug. The results obtained here correspond to those recorded in previous autopsy surveys in other countries.
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