Diagnosis and Molecular Characterization of Mycobacterium avium subsp. paratuberculosis from Dairy Cows in Colombia

Table 1

Information on herd management of five dairy herds examined for Map in Colombia.

Herd^a	District	Number of cattle purchased in the last two years		Raising of own replacement heifers	Proportion of ELISA-A positive results 2007^b, d
		2007^b	2009
1	Monterredondo	0	0	Yes	15% (3/20)
2	El Yuyal	10	5	Yes	20% (4/20)
3	El Yuyal	0	0	Yes	27.2% (6/22)
4	Santo Domingo	0	0	Yes	21.7% (5/23)
5	Santa Bárbara	N.A.^c	4	Yes	NA

^a Herd 2 and herd 4 belong to the same farmer and cattle exchange between both herds occurs frequently.
^bAccording to Fernández-Silva et al. 2011 [10].
^c NA: not applicable. This herd was not sampled in 2007.
^d Refers to the proportion of positive animals by ELISA-A to the number of animals sampled in the herd.