Evaluation of the efficacy of two postweaning colibacillosis vaccines in a field herd with PRRS circulation during postweaning stage

1. López-Lorenzo, G.
2. Prieto, A.
3. Díaz-Cao, J.M.
4. López-Novo, C.
5. García-Dios, D.
6. López, C.
7. Panadero, R.
8. Iglesias, A.
9. Díez-Baños, P.
10. Fernández, G.