Table 5.
Group # calf ID # | Breed1 | Sex | calf E/A/F2 | Age (months) at testing3 | Dam E/A/F | Pregnant/fresh clinical stage of dam4 | |
Pre-calving | maximum | ||||||
4-1* | J | F | 4.0/+/22 | 31 | 1.7/−/0 | 2.2/−/0 | II |
4-2* | X | F | 2.7/−/8 | 36 | 1.8/−/2 | 3.7/+/30 | II* |
4-3* | H | F | 4.9/+/>300 | 23 | 2.2/−/0 | 3.8/+/>225 | II* |
4-4 | A | M | 4.0/−/39 | 22.5 | 3.3/−/>300 | 3.6/+/>300 | III* |
4-5 | H | M | 3.8/+/44 | 22.5 | 3.4/−/16 | 4.3/−/16 | II* |
4-6 | X | M | 1.5/−/0 | 23 | 3.7/+/220 | 4.6/+/>300 | II* |
4-7 | H | F | 1.0/−/0 | 58.5 | 4.3/−/>300 | 4.3/−/>300 | II |
4-8 | X | M | 0.69/−/0 | 21 | 4.4/+/>300 | 4.4/+/>300 | II* |
Note: Bold indicates calves with paratuberculosis-positive test parameters.
indicates animal died with clinical Johne's disease.
J, Jersey; H, Holstein; X, Cross; A, Ayrshire.
Result for each calf at first positive or last negative E, ELISA OD405 nm (≤1.4 considered negative); A, AGID (positive/negative); F, Fecal culture (cfu/2 g).
Age at which calf first tested positive for either E, A, F or if E, A, F were negative, age at final test.
Clinical Stage (Whitlock and Buergelt, 1996).