KAZEMI-BONCHENARI, M; SALEM, A Z M; GHASEMI, E. Effect of urea supplementation in diet based on barley grain or corn silage on performance, digestion, rumen fermentation and microbial protein synthesis in Holstein bull calves. The Indian Journal of Animal Sciences, Delhi, India, v. 86, n. 3, p. 313–317, 2016. DOI: 10.56093/ijans.v86i3.56709. Disponível em: https://epubs.icar.org.in/index.php/IJAnS/article/view/56709. Acesso em: 20 oct. 2025.