RIZAL, S.; UTAMA, S.; UTOMO, B.; SUSILOWATI, S.; MULYATI, S.; ISMUDIONO, I.; SOEHARSONO, S. Interkorelasi antara persentase konsentrat, kadar urea nitrogen susu dan beberapa variabel sapi perah Friesian Holstein. Ovozoa: Journal of Animal Reproduction, [S. l.], v. 9, n. 2, p. 53–59, 2020. DOI: 10.20473/ovz.v9i2.2020.53-59. Disponível em: https://e-journal.unair.ac.id/OVZ/article/view/21633. Acesso em: 18 apr. 2025.