Surveillance of diarrhea‐causing pathogens in dairy and beef cows in Yamagata Prefecture, Japan from 2002 to 2011

Mawatari, Takahiro; Hirano, Kazumi; Ikeda, Hidetoshi; Tsunemitsu, Hiroshi; Suzuki, Tohru

doi:10.1111/1348-0421.12174

Cited by 22 publications

(19 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…As previously suggested, BCoV outbreaks may occur in calves from beef and dairy herds 28,37 . However, in a previous study conducted in Argentina, BCoV infection was mostly associated with diarrhea in dairy husbandry systems 6 .…”

Section: Introductionmentioning

confidence: 60%

Passive immunity to control Bovine coronavirus diarrhea in a dairy herd in Argentina

Bok¹,

Alassia²,

Frank³

et al. 2018

Revista Argentina de Microbiología

View full text Add to dashboard Cite

Bovine coronavirus (BCoV) is a viral enteric pathogen associated with calf diarrhea worldwide being, in Argentina, mostly detected in dairy husbandry systems. The aim of the present work was to study if maternal IgG1 antibodies (Abs) to BCoV acquired by colostrum intake modulate the development of BCoV infection in calves reared in a dairy farm in Argentina. Thirty Holstein calves were monitored during their first 60 days of age. Animals were classified into two groups depending on their initial BCoV IgG1 Ab titers. The "failure of passive transfer" (FPT) group had significantly lower IgG1 Abs to BCoV than the "acceptable passive transfer" (APT) group of calves (log10 1.98 vs. 3.38 respectively) (p<0.0001). These differences were also observed when the total protein levels in both groups were compared (p=0.0081). Moreover, 71% (5/7) of calves from the FPT group showed IgG1 seroconversion to BCoV compared to 29.4% (5/17) of animals from the APT group. Regarding viral circulation, BCoV was detected in 10% (3/30) of all calves and BCoV IgG1 Ab seroconversion was detected in 42% of the total animals showing that almost half of the calves were infected with BCoV. In conclusion, calves with high titers of specific BCoV IgG1 (≥1024) were mostly protected against viral infection, while animals with low titers of IgG1 (<1024) were mostly infected with BCoV. IgG1 Abs from colostrum origin are critical for prevention of BCoV infection.

show abstract

Section: Introductionmentioning

confidence: 60%

Passive immunity to control Bovine coronavirus diarrhea in a dairy herd in Argentina

Bok¹,

Alassia²,

Frank³

et al. 2018

Revista Argentina de Microbiología

View full text Add to dashboard Cite

show abstract

“…Notably, BCoV was detected mainly in the coldest months. Since BCoV is more stable at lower temperatures and lower levels of ultraviolet light [37], this might be a reason why BCoV is most frequently detected in winter [38,39]. In Uruguay, according to the Uruguayan Institute of Meteorology (INUMET), in June, July and August (in addition to the temperature), the time of direct insolation, the vapor pressure, and the cumulative rainfall are also lower than in the other months, and the average relative humidity and the atmospheric pressure are higher than in the remainder of the months.…”

Section: Discussionmentioning

confidence: 99%

Bovine coronavirus in Uruguay: genetic diversity, risk factors and transboundary introductions from neighboring countries

et al. 2019

View full text Add to dashboard Cite

Bovine coronavirus (BCoV) is a recognized cause of severe neonatal calf diarrhea, with a negative impact on animal welfare, leading to economic losses to the livestock industry. Cattle production is one of the most important economic sectors in Uruguay. The aim of this study was to determine the frequency of BCoV infections and their genetic diversity in Uruguayan calves and to describe the evolutionary history of the virus in South America. The overall detection rate of BCoV in Uruguay was 7.8% (64/824): 7.7% (60/782) in dairy cattle and 9.5% (4/42) in beef cattle. The detection rate of BCoV in samples from deceased and live calves was 10.0% (6/60) and 7.6% (58/763), respectively. Interestingly, there was a lower frequency of BCoV detection in calves born to vaccinated dams (3.3%, 8/240) than in calves born to unvaccinated dams (12.2%, 32/263) (OR: 4.02, 95%CI: 1.81-8.90; p = 0.00026). The frequency of BCoV detection was higher in colder months (11.8%, 44/373) than in warmer months (1.5%, 3/206) (OR: 9.05, 95%CI: 2.77-29.53, p = 0.000013). Uruguayan strains grouped together in two different lineages: one with Argentinean strains and the other with Brazilian strains. Both BCoV lineages were estimated to have entered Uruguay in 2013: one of them from Brazil (95%HPD interval: 2011 and the other from Argentina (95%HPD interval: 2010-2014). The lineages differed by four amino acid changes, and both were divergent from the Mebus reference strain. Surveillance should be maintained to detect possible emerging strains that can clearly diverge at the antigenic level from vaccine strains.

show abstract

“…La mayor parte de las PGI en el bovino es ocasionada por protozoarios y helmintos. Dentro de los protozoarios, Eimeria sp es un enterococcidio del phylum Apicomplexa que ocasiona la coccidiosis bovina, infección que se caracteriza clínicamente por diarrea, deshidratación y muerte en animales menores de un año ( Los nematodos y cestodos ocasionan problemas de gastroenteritis verminosa caracterizadas clínicamente por diarrea, debilidad, hemorragias y deshidratación (Mawatari et al, 2014). Los nematodos tienen ciclo de vida directo, con una fase en el animal y una externa en los pastos, donde ocurre el desarrollo de huevos hasta el tercer estado larval infectante (Cordero del Campillo et al, 1999 El Departamento del Cesar, Colombia, es una región agropecuaria y pesquera, siendo el sector ganadero uno de los más importantes en la economía regional, con una participación del 6% del inventario vacuno a nivel nacional.…”

Section: Introductionunclassified

Prevalencia del parasitismo gastrointestinal en bovinos del departamento Cesar, Colombia

Pinilla

Flórez

Sierra

et al. 2018

Rev. investig. vet. Perú

View full text Add to dashboard Cite

RESUMENEl objetivo del estudio fue determinar la prevalencia de parásitos gastrointestinales en bovinos del departamento del Cesar, Colombia. Se colectaron 862 muestras fecales en 27 fincas de doble propósito de dos municipios. Los animales fueron estratificados en tres grupos etarios: 0-12, 12-24 y >24 meses. Las muestras se procesaron mediante las técnicas coprológicas de McMaster, Dennis y Baermann. Se identificaron los géneros de los parásitos según morfología de sus huevos o larvas infectivas. La prevalencia global de parásitos gastrointestinales fue de 83.2%, siendo los valores más altos para Eimeria sp (77.9%), Strongyloides sp (10.8%) y Haemonchus sp (8.5%). No se encontró asociación estadística por efecto de los municipios, pero se observó por efecto del grupo etario en la prevalencia de Eimeria sp, Strongyloides, Haemonchus y Trichostrongylus (p<0.05).Palabras clave: gastrointestinal; helmintos; parásitos; vacunos ABSTRACTThe objective of the study was to determine the prevalence of gastrointestinal parasites in bovines from the department of Cesar, Colombia. Faecal samples were collected (n=862) from 27 dual-purpose cattle farms in two municipalities. The animals were stratified into three age groups: 0-12, 12-24 and >24 months. The samples were processed using the coprological techniques of McMaster, Dennis and Baermann. The genera of the parasites were identified according to the morphology of their eggs or

show abstract

Surveillance of diarrhea‐causing pathogens in dairy and beef cows in Yamagata Prefecture, Japan from 2002 to 2011

Cited by 22 publications

References 25 publications

Passive immunity to control Bovine coronavirus diarrhea in a dairy herd in Argentina

Passive immunity to control Bovine coronavirus diarrhea in a dairy herd in Argentina

Bovine coronavirus in Uruguay: genetic diversity, risk factors and transboundary introductions from neighboring countries

Prevalencia del parasitismo gastrointestinal en bovinos del departamento Cesar, Colombia

Contact Info

Product

Resources

About