Fluctuation of internal parasite infections in industrialized piggeries in Korea.
1989
Kang Y.B. | Wee S.H. | Kim S.H. | Jang H. | Choi S.H.
A survey on the prevalence of internal parasitism in Korea was carried out for a total of 1,041 pigs using the fecal examination during the period of February to November 1987. The overall infection rate of the internal parasites was as high as 67 % and seven species of parasites were identified. Among the species identified, the most commomly encountered parasite was Balantidium coli (57.7 %). Kangwon (85.3 %) and Chungchong (82.2 %) areas appeared with relatively higher infection rates than any other areas. It was revealed that the infection rates in sows were higher than in growers, slaughter pigs and young piglets. In comparison to the past, the infection rates being decreased were Metastrongylus apri, Oesophagostomum dentatum, and Strongyloides ransomi and no significant variances between present and past were Coccidia and T. suis.
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