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Serological investigation of Leptospira infection and its circulation in one intensive-type water buffalo farm in the Philippines

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Title: Serological investigation of Leptospira infection and its circulation in one intensive-type water buffalo farm in the Philippines
Authors: Villanueva, Marvin A. Browse this author
Mingala, Claro N. Browse this author
Gloriani, Nina G. Browse this author
Yanagihara, Yasutake Browse this author
Isoda, Norikazu Browse this author
Nakajima, Chie Browse this author →KAKEN DB
Suzuki, Yasuhiko Browse this author →KAKEN DB
Koizumi, Nobuo Browse this author →KAKEN DB
Keywords: intensive-type farming
the Philippines
water buffalo
Issue Date: Feb-2016
Publisher: Graduate School of Veterinary Medicine, Hokkaido University
Journal Title: Japanese Journal of Veterinary Research
Volume: 64
Issue: 1
Start Page: 15
End Page: 24
Abstract: Water buffalo is an indispensable livestock in the Philippines. Leptospirosis is a serious zoonosis that can be fatal to humans and cause reproductive problems in livestock. Leptospirosis has been reported in some countries where water buffaloes are commercially raised, highlighting the Leptospira prevalence in this farming system, but information on leptospirosis in water buffalo farms in the Philippines is limited. In this study, we collected blood samples from rats (n = 21), and water buffaloes (n = 170) from different groups and locations in one intensive-type buffalo farm in the Philippines. Serum was analyzed by microscopic agglutination test (MAT). Anti-Leptospira antibodies reacting with serogroups Canicola, Icterohaemorrhagiae and Pomona were found in sera of 30% tested rats, and 48% of water buffalo sera tested positive for at least one Leptospira strain, in which serogroups Mini, Hebdomadis, Tarassovi and Pyrogenes were predominantly agglutinated. The number of seropositive young water buffaloes (<1 year-old) was lower than that of older seropositive ones. Furthermore, sera from younger water buffaloes were reactive with single serotypes with low MAT titers, but older animals were reactive with multiple Leptospira strains with variable MAT titers. In addition, antibodies against serogroups Icterohaemorrhagiae and Pomona were detected in both animals. Finally, Leptospira infection was found associated with age and animal grouping, highlighting the impact of management in the persistence of leptospirosis at intensive-type buffalo farm settings in the Philippines. Further investigation and appropriate control strategies are required to prevent leptospirosis from causing risks to public health and economic losses to the water buffalo farming industry.
Type: bulletin (article)
Appears in Collections:Japanese Journal of Veterinary Research > Volume 64 Number 1

Submitter: 獣医学部図書室

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