Pregnancy success of lactating Holstein cows after a single administration of a sustained-release formulation of recombinant bovine somatotropin

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A Bell, OA Rodríguez, LA de Castro e Paula, MB Padua, J Hernández-Cerón, CG Gutiérrez, A De Vries and PJ Hansen^*

BMC Veterinary Research 2008, 4:22 doi:10.1186/1746-6148-4-22