@article{article97b5d075, title = {Energy requirements of Holstein, Gyr, and Holstein × Gyr crossbred heifers using the respirometry technique}, author = {Silvestre, Tainá and Ferreira, Alexandre Lima and Machado, Fernanda Samarini and Campos, Mariana Magalhães and Tomich, Thierry Ribeiro and Pereira, Luiz Gustavo Ribeiro and Rodrigues, Paulo Henrique Mazza and Marcondes, Marcos Inácio}, year = {2022}, doi = {10.3389/fanim.2022.919515}, journal = {Frontiers in Animal Science} }