Mohammadzadeh M, Kazemi-Bonchenari M, HosseinYazdi M, Mirzaei M. Forage source (alfalfa hay vs wheat straw) and rumen undegradable to degradable protein ratio: Effects on growth performance, microbial protein yield, digestibility, blood metabolites, and behavior of Holstein dairy calves. Span. j. agric. res. [Internet]. 2021Aug.12 [cited 2026Aug.1];19(3):e0610. Available from: https://sjar.revistas.csic.es/index.php/sjar/article/view/16733