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Risk factors for the presence of Fasciola hepatica antibodies in bulk-milk samples and their association with milk production decreases, in Cuban dairy cattle

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Abstract
Background: Worldwide, Fasciola hepatica infection causes high production losses in the livestock industry. Recently, studies have analyzed the association between measurements of F. hepatica infection intensity and herd management practices. The aim of the present study, the first of its kind in a subtropical region, was to evaluate associations between F. hepatica bulk-tank milk ELISA results with herd management factors and milk yield in dairy herds, in Camaguey, Cuba. The SVANOVIR (R) F. hepatica-AB ELISA was used to measure F. hepatica antibody levels in a random sample of 516 dairy herds during the period of May-July of 2014. Farm management practice data were collected using a questionnaire. Results: With 82% of the herds testing positive, the results indicate that F. hepatica is very widespread in this area. Reductions in milk production of 18 and 32% were observed in herds with Optical Density Ratios (ODR) of 0.3-0.6 and>0.6, respectively, when compared to herds with ODR<0.3. Overall, the longer the milking cows were put out to pasture, the higher the levels of anti-parasite antibodies. Co-grazing with sheep and goats also significantly increased the risk of high ODR. Conclusions: Our data show a widespread occurrence of the parasite as well as a major potential impact of the infection on the Cuban development goal of becoming self-sufficient in milk production. Our risk factor analysis suggests that the prevention of infection around water sources, and the separation of cattle from small ruminants could be useful control measures. This is the first epidemiological survey of F. hepatica abundance, and associated reductions in milk yield, in dairy herds in Cuba.
Keywords
Bulk-tank, Milk production, Risk factors, Liver fluke, Helminth, Ruminants, ELISA, HERDS, IMPACT, EPIDEMIOLOGY, INFECTIONS, PREVALENCE, EXPOSURE, FARMS, SHEEP

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MLA
Arenal, Amilcar et al. “Risk Factors for the Presence of Fasciola Hepatica Antibodies in Bulk-milk Samples and Their Association with Milk Production Decreases, in Cuban Dairy Cattle.” BMC VETERINARY RESEARCH 14 (2018): n. pag. Print.
APA
Arenal, A., García, Y., Quesada, L., Velázquez, D., Sánchez, D., Peña, M., Suárez, A., et al. (2018). Risk factors for the presence of Fasciola hepatica antibodies in bulk-milk samples and their association with milk production decreases, in Cuban dairy cattle. BMC VETERINARY RESEARCH, 14.
Chicago author-date
Arenal, Amilcar, Yipsi García, Lídice Quesada, Dayamis Velázquez, Diamela Sánchez, Mayelin Peña, Asnaldo Suárez, et al. 2018. “Risk Factors for the Presence of Fasciola Hepatica Antibodies in Bulk-milk Samples and Their Association with Milk Production Decreases, in Cuban Dairy Cattle.” Bmc Veterinary Research 14.
Chicago author-date (all authors)
Arenal, Amilcar, Yipsi García, Lídice Quesada, Dayamis Velázquez, Diamela Sánchez, Mayelin Peña, Asnaldo Suárez, Arnielis Díaz, Yuliet Sánchez, Stijn Casaert, Jan van Dijk, Jozef Vercruysse, and Johannes Charlier. 2018. “Risk Factors for the Presence of Fasciola Hepatica Antibodies in Bulk-milk Samples and Their Association with Milk Production Decreases, in Cuban Dairy Cattle.” Bmc Veterinary Research 14.
Vancouver
1.
Arenal A, García Y, Quesada L, Velázquez D, Sánchez D, Peña M, et al. Risk factors for the presence of Fasciola hepatica antibodies in bulk-milk samples and their association with milk production decreases, in Cuban dairy cattle. BMC VETERINARY RESEARCH. 2018;14.
IEEE
[1]
A. Arenal et al., “Risk factors for the presence of Fasciola hepatica antibodies in bulk-milk samples and their association with milk production decreases, in Cuban dairy cattle,” BMC VETERINARY RESEARCH, vol. 14, 2018.
@article{8605165,
  abstract     = {Background: Worldwide, Fasciola hepatica infection causes high production losses in the livestock industry. Recently, studies have analyzed the association between measurements of F. hepatica infection intensity and herd management practices. The aim of the present study, the first of its kind in a subtropical region, was to evaluate associations between F. hepatica bulk-tank milk ELISA results with herd management factors and milk yield in dairy herds, in Camaguey, Cuba. The SVANOVIR (R) F. hepatica-AB ELISA was used to measure F. hepatica antibody levels in a random sample of 516 dairy herds during the period of May-July of 2014. Farm management practice data were collected using a questionnaire.
Results: With 82% of the herds testing positive, the results indicate that F. hepatica is very widespread in this area. Reductions in milk production of 18 and 32% were observed in herds with Optical Density Ratios (ODR) of 0.3-0.6 and>0.6, respectively, when compared to herds with ODR<0.3. Overall, the longer the milking cows were put out to pasture, the higher the levels of anti-parasite antibodies. Co-grazing with sheep and goats also significantly increased the risk of high ODR.
Conclusions: Our data show a widespread occurrence of the parasite as well as a major potential impact of the infection on the Cuban development goal of becoming self-sufficient in milk production. Our risk factor analysis suggests that the prevention of infection around water sources, and the separation of cattle from small ruminants could be useful control measures. This is the first epidemiological survey of F. hepatica abundance, and associated reductions in milk yield, in dairy herds in Cuba.},
  articleno    = {336},
  author       = {Arenal, Amilcar and García, Yipsi and Quesada, Lídice and Velázquez, Dayamis and Sánchez, Diamela and Peña, Mayelin and Suárez, Asnaldo and Díaz, Arnielis and Sánchez, Yuliet and Casaert, Stijn and van Dijk, Jan and Vercruysse, Jozef and Charlier, Johannes},
  issn         = {1746-6148},
  journal      = {BMC VETERINARY RESEARCH},
  keywords     = {Bulk-tank,Milk production,Risk factors,Liver fluke,Helminth,Ruminants,ELISA,HERDS,IMPACT,EPIDEMIOLOGY,INFECTIONS,PREVALENCE,EXPOSURE,FARMS,SHEEP},
  language     = {eng},
  pages        = {8},
  title        = {Risk factors for the presence of Fasciola hepatica antibodies in bulk-milk samples and their association with milk production decreases, in Cuban dairy cattle},
  url          = {http://dx.doi.org/10.1186/s12917-018-1654-2},
  volume       = {14},
  year         = {2018},
}

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