Factors associated with Mycobacterium avium subsp. paratuberculosis in dairy cows from Northern Antioquia, Colombia

Background: Johne´s disease (JD) is a severe enteritis that affects ruminants and has been diagnosed in cattle and sheep in Colombia. However, epidemiological information on the disease in this country is scarce. Objective: to identify factors associated with the JD serum enzyme-linked immunosorbent...

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Autores principales:	Jorge A. Fernández Silva, Nicolás F. Ramírez Vásquez, Nathalia M. Correa Valencia
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2017
Materias:	cattle epidemiology paratuberculosis serology Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/50fec688d33b41b4a2199dab3f2dda5e
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spelling	oai:doaj.org-article:50fec688d33b41b4a2199dab3f2dda5e2021-11-26T19:13:36ZFactors associated with Mycobacterium avium subsp. paratuberculosis in dairy cows from Northern Antioquia, Colombia2256-295810.17533/udea.rccp.v30n1a06https://doaj.org/article/50fec688d33b41b4a2199dab3f2dda5e2017-01-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/325782https://doaj.org/toc/2256-2958Background: Johne´s disease (JD) is a severe enteritis that affects ruminants and has been diagnosed in cattle and sheep in Colombia. However, epidemiological information on the disease in this country is scarce. Objective: to identify factors associated with the JD serum enzyme-linked immunosorbent assay (ELISA) status of dairy cows. Methods: a cross-sectional study was carried out in 307 asymptomatic adult Holstein dairy cows from 14 herds in nine districts of Belmira and San Pedro de los Milagros municipalities during November, 2007. Nineteen to 29 cows, ≥ 2 years of age were randomly selected and blood sampled from every herd. A commercial ELISA kit was used to analyze sera. Information regarding cow related factors (age, farm-born, parity, and daily milk yield) and herd management practices (i.e. herd size, herd average milk production, current presence of symptomatic animals, cattle purchase, own animals grazing in foreign pastures, feeding of calves before weaning, manure spread on pastures, and sighting of birds in feed storing areas) was collected using questionnaires. Descriptive statistics were computed for all variables and a multivariable logistic regression model was constructed (p<0.05). Results: ten percent (31/307; 95% CI: 7-14%) of the animals were positive by ELISA. In 70% (10/14) of the herds, ELISA detected at least one positive animal. Cow and herd factors such as “parity” and “feeding of calves before weaning” showed weak and strong associations with ELISA positive results, respectively. The odds ratio (OR) for JD seropositivity increased 20% (OR = 1.20; 95% CI: 0.98-1.47; p = 0.067) in cows with > 1 parity. The OR was 0.74 times lower (OR = 0.26; 95% CI: 0.096-0.70; p<0.01) in herds feeding calves with pooled colostrum from several cows, compared to herds feeding calves with colostrum from their own dams. Conclusion: JD seroprevalence was 10 and 70% at animal and herd-level, respectively. Cow and herd factors “parity” and “feeding of calves before weaning” showed weak and strong association with positive results, respectively.Jorge A. Fernández SilvaNicolás F. Ramírez VásquezNathalia M. Correa ValenciaUniversidad de AntioquiaarticlecattleepidemiologyparatuberculosisserologyAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 30, Iss 1, Pp 48-59 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	cattle epidemiology paratuberculosis serology Animal culture SF1-1100
spellingShingle	cattle epidemiology paratuberculosis serology Animal culture SF1-1100 Jorge A. Fernández Silva Nicolás F. Ramírez Vásquez Nathalia M. Correa Valencia Factors associated with Mycobacterium avium subsp. paratuberculosis in dairy cows from Northern Antioquia, Colombia
description	Background: Johne´s disease (JD) is a severe enteritis that affects ruminants and has been diagnosed in cattle and sheep in Colombia. However, epidemiological information on the disease in this country is scarce. Objective: to identify factors associated with the JD serum enzyme-linked immunosorbent assay (ELISA) status of dairy cows. Methods: a cross-sectional study was carried out in 307 asymptomatic adult Holstein dairy cows from 14 herds in nine districts of Belmira and San Pedro de los Milagros municipalities during November, 2007. Nineteen to 29 cows, ≥ 2 years of age were randomly selected and blood sampled from every herd. A commercial ELISA kit was used to analyze sera. Information regarding cow related factors (age, farm-born, parity, and daily milk yield) and herd management practices (i.e. herd size, herd average milk production, current presence of symptomatic animals, cattle purchase, own animals grazing in foreign pastures, feeding of calves before weaning, manure spread on pastures, and sighting of birds in feed storing areas) was collected using questionnaires. Descriptive statistics were computed for all variables and a multivariable logistic regression model was constructed (p<0.05). Results: ten percent (31/307; 95% CI: 7-14%) of the animals were positive by ELISA. In 70% (10/14) of the herds, ELISA detected at least one positive animal. Cow and herd factors such as “parity” and “feeding of calves before weaning” showed weak and strong associations with ELISA positive results, respectively. The odds ratio (OR) for JD seropositivity increased 20% (OR = 1.20; 95% CI: 0.98-1.47; p = 0.067) in cows with > 1 parity. The OR was 0.74 times lower (OR = 0.26; 95% CI: 0.096-0.70; p<0.01) in herds feeding calves with pooled colostrum from several cows, compared to herds feeding calves with colostrum from their own dams. Conclusion: JD seroprevalence was 10 and 70% at animal and herd-level, respectively. Cow and herd factors “parity” and “feeding of calves before weaning” showed weak and strong association with positive results, respectively.
format	article
author	Jorge A. Fernández Silva Nicolás F. Ramírez Vásquez Nathalia M. Correa Valencia
author_facet	Jorge A. Fernández Silva Nicolás F. Ramírez Vásquez Nathalia M. Correa Valencia
author_sort	Jorge A. Fernández Silva
title	Factors associated with Mycobacterium avium subsp. paratuberculosis in dairy cows from Northern Antioquia, Colombia
title_short	Factors associated with Mycobacterium avium subsp. paratuberculosis in dairy cows from Northern Antioquia, Colombia
title_full	Factors associated with Mycobacterium avium subsp. paratuberculosis in dairy cows from Northern Antioquia, Colombia
title_fullStr	Factors associated with Mycobacterium avium subsp. paratuberculosis in dairy cows from Northern Antioquia, Colombia
title_full_unstemmed	Factors associated with Mycobacterium avium subsp. paratuberculosis in dairy cows from Northern Antioquia, Colombia
title_sort	factors associated with mycobacterium avium subsp. paratuberculosis in dairy cows from northern antioquia, colombia
publisher	Universidad de Antioquia
publishDate	2017
url	https://doaj.org/article/50fec688d33b41b4a2199dab3f2dda5e
work_keys_str_mv	AT jorgeafernandezsilva factorsassociatedwithmycobacteriumaviumsubspparatuberculosisindairycowsfromnorthernantioquiacolombia AT nicolasframirezvasquez factorsassociatedwithmycobacteriumaviumsubspparatuberculosisindairycowsfromnorthernantioquiacolombia AT nathaliamcorreavalencia factorsassociatedwithmycobacteriumaviumsubspparatuberculosisindairycowsfromnorthernantioquiacolombia
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Factors associated with Mycobacterium avium subsp. paratuberculosis in dairy cows from Northern Antioquia, Colombia

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