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KMID : 1023520090320040369
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Korean Journal of Veterinary Service
2009 Volume.32 No. 4 p.369 ~ p.375
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Prevalence of heartworm infection among dogs on breeding farms in southern Gyeongnam area
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Kim Toh-Kyung
Jo Myeong-Hui
Park Mi-Nam
Jo Eun-Jeong
Nam Taek-Su
Son Seong-Ki
Heo Jeong-Ho
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Abstract
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This study was attempted to survey the prevalence of heartworm infection among 253 dogs (male 167, female 86) on the 16 breeding farms in southern Gyeongnam area in May to December 2007. The results obtained from this experiment were summarized as follows; Fifty seven (22.5%) of the 253 examined dogs were heartworms-antigen positive, while twenty five dogs were Microfilaria positive by the modified Knott’s method. The regional infection rates were of 25% in Tongyeong and 21% in Goseong, and on the breeding environment aspects, infection rates were lower in rural area than urban area farms. The infection rates were higher in female (26/86, 30.2%) than male dog (31/167, 18.6%). The infection rates by breeding size of farms were 31% (11/35) at ?20 head, 26%(35/135) at 20~50 head and 13% (11/82) at ¤50 head. The infection rates of heartworm in examined dogs at the age of ?2, 2~4 and ¤5 were 10.7% (8/75), 26% (40/154) and 37.5% (9/24), respectively. In the microfillaria-infected 25 dogs, identified Dirofilaria immitis of 21 (84%) using PCR. The dogs infected with heartworm showed the increased number of eosinophil.
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KEYWORD
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Heartworms, Dogs, Infection rate, Dirofilaria immiti
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