Epidemiological Studies on Intestinal Protozoa in Pigs in Saitama, Japan

• YUI Takeshi

  Department of Pathological Appraisal, Chuo Livestock Hygiene Service Center, Saitama Prefecture Department of Veterinary Pathology, School of Veterinary Medicine, Rakuno Gakuen University

• SHIBAHARA Tomoyuki

  Department of Pathology and Pathophysiology Research Division, National Institute of Animal Health

• KON Marina

  Department of Clinical Microbiology, Saitama Prefectural Institute of Public Health

• YAMAMOTO Norishige

  Department of Clinical Microbiology, Saitama Prefectural Institute of Public Health

• KAMEDA Mitsuzumi

  Department of Saitama Prefectural Agriculture Management Junior College

• TANIYAMA Hiroyuki

  Department of Veterinary Pathology, School of Veterinary Medicine, Rakuno Gakuen University

抄録

We surveyed the rates of internal infection of swine with gastrointestinal tract protozoa by checking the stools of 334 pigs (suckling pigs, growing pigs aged 1 to 6 months and sows or sow candidates) on 8 hog farms in Saitama, Japan from September to November 2009. Oocysts and cysts per gram of stools in all pigs were calculated. Parasite detection rates were statistically analyzed for each of the farms, age groups, and stool condition scores, and the relationship between parasitic infection and diarrhea was investigated. Cryptosporidium was detected in 79 pigs (23.7%) of all pigs checked, Giardia was found in 53 (15.9%), Balantidium in 155 (46.4%), and coccidium in 20 (6.0%). The rate of Cryptosporidium infection was higher in the 2- and 3-month-old groups (55.6 to 60.0%) than in the others (2.5 to 27.6%) (P < 0.05): oocysts per gram of stools of 10⁴ to 10⁵ were detected in a total of 33 suckling pigs and 2- and 3-month-old pigs, including 10 of an outdoor farm. There was a correlation between the infection rate and diarrhea in five piglets aged 1 month or younger. In addition, the number of 6-month-old pigs infected with Giardia was 40.0%, as opposed to just 5.1% (P < 0.05) of suckling pigs. Detection rates differed among farms. The Balantidium infection rate was high in pigs older than 4 months (45.0 to 78.9%), as opposed to 15.4 to 17.2% (P < 0.05) in pigs younger than 1 month.

収録刊行物

• Japan Agricultural Research Quarterly: JARQ

  Japan Agricultural Research Quarterly: JARQ 48 (1), 87-93, 2014

  国立研究開発法人　国際農林水産業研究センター

キーワード

• <I>Balantidium</I>
• coccidium
• <I>Cryptosporidium</I>
• <I>Giardia</I>
• pig

詳細情報

• CRID: 1390001204702469248
• NII論文ID: 130003396729
• DOI: 10.6090/jarq.48.87
• ISSN: 21858896
• ISSN: 00213551
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可