@inproceedings{inproceedings11a85a4a, title = {Quantity and quality of oocytes recovered by ovum pick up from heifers fed with urea are not affected by high levels of plasma urea nitrogen}, author = {Ferreira, F. A. and Gómez, R. G. and Carlino, D. and Watanabe, Yeda Fumie and Rodrigues, Paulo Henrique Mazza}, year = {2006}, booktitle = {International Ruminant Reproduction Symposium} }