Fouz, R.; Gandoy, F.; Sanjuán, M. L.; Yus, E.; Diéguez, F. J. Factors Associated With 56‑day Non‑return Rate in Dairy Cattle. PAB 2011, 46 (6), 648-654. https://doi.org/10.1590/S1678-3921.pab2011.v46.9423.