The objective of this study was to estimate genetic parameters for milk protein fraction contents, milk protein composition, and milk coagulation properties (MCP). Contents of α(S1)-, α(S2)-, β-, γ-, and κ-casein (CN), β-lactoglobulin (β-LG), and α-lactalbumin (α-LA) were measured by reversed-phase HPLC in individual milk samples of 2,167 Simmental cows. Milk protein composition was measured as...

The objective of this study was to determine the effect of supplemental lysine (Lys), methionine (Met) or both amino acids added in the form of rumen-protected (RP) tablets with copolymer coating to a diet of dairy cows on yield and composition of milk and concentration of plasma amino acids (AA). The experiment was carried out on four high-yielding lactating Holstein cows with average milk pro...

Concentrated milk systems can be unstable during heat treatment. In this work, we studied the structural changes in proteins skim (9, 17 and 25% solids) as a result of pH adjustment to 7.5 heating at 75, 85, 95 100, 110 121 °C by Fourier transform infrared spectroscopy (FTIR) SDS-PAGE. The resulted some dissociation caseins serum, predominately 9% total solids samples. Furthermore, an increase ...