Animal 2019 Jul 12;13(7):1403-1411. Epub 2018 Nov 12.
1Faculdade de Zootecnia e Engenharia de Alimentos,Universidade de São Paulo,13635900, Pirassununga, São Paulo,Brazil.
The protein nutrition of dairy cows is of great importance because of its direct influence on milk production, reproductive efficiency, and feeding cost. Eight first-lactation Holstein cows were randomly assigned to two contemporary 4 × 4 Latin squares in a 2 × 2 factorial design to evaluate the effects of replacing soybean meal with yeast-derived microbial protein (YMP) as a protein source (0% or 1.5% of dry matter (DM)) and its combination with slow-release urea (SRU; 0% or 0. Read More