Seroprevalence of Neospora caninum infection in dairy cows in Northern provinces, Thailand

Abstract

Neospora caninum, an obligate intracellular protozoan parasite, is the causative agent of neosporosis, recognized as a major cause of bovine abortion around the world. Thailand is a developing agricultural country located in Southeast Asia. Livestock developments particularly in dairy cows of this country have been hampered by low productivity including milk and slow growth rate due to the impact of many pathogens including N. caninum. Currently, there is no effective method for control of neosporosis since there is less information regarding current status of infections. The objective of this study was to investigate the seroprevalence of neosporosis in dairy cows of the northern part of Thailand. During 2006-2007, the sera of 642 cows from 42 small farm holders with the top three highest consensus of dairy farms in the northern provinces, such as Chiang Rai, Chiang Mai and Lumpang were collected and performed tests. Antibodies to N. caninum were assayed by enzyme-linked immunosorbent assay (ELISA) with recombinant N. caninum surface antigen 1 (NcSAG1) and indirect fluorescent antibody test (IFAT). The overall prevalence of N. caninum infection in this study was 46.9% (301/642) by ELISA and 34.3% (220/642) by IFAT.

Serological detection and epidemiology of Neospora caninum and Cryptosporidium parvum antibodies in cattle in southern Egypt

“…Using the same technique as our study (NcSAG1t-based ELISA), seroprevalence rates of 33.5% in Brazil (Chahan et al, 2003) and 46.9% in Thailand (Inpankaew et al, 2014) have been reported in cattle. The markedly higher prevalence in these studies compared with the present study could be because of the difference in location and environmental patterns, time period and number of collected samples.…”

Seroprevalence of Neospora caninum infections in cattle in Kirkuk province

“…The seroprevalence of 28.6% is the highest compared to international studies which reported the seroprevalences of N. caninum in cattle between 2.8-50% (11)(12)(13)(14)(15)(16)(17). However, found the lowest level in cattle between 32-44.4% (10,18), while in another study, the overall prevalence of N. caninum infection was 46.9% (19). Perhaps the difference is due to the geographical area or the surrounding environment and topographical reasons that affect the development and survival of oocysts (20).…”

Prevalence of Neospora caninum using Milk and Serum ELISA and its Hematological Effect in Dairy Buffaloes

“…Recent literature reveals growing exposure of buffalo to N. caninum infection with age (Moore et al, 2014). In Thailand, N. caninum was determined as one of the important pathogens causing low milk productivity and slow growth rate of livestock animals (Inpankaew et al, 2014). Globally, the estimated median losses due to N. caninum induced abortions were in excess of US $1,298.3 million (Reichel, 2013).…”