Biochemical indices and free aminoacids content in cows blood at feeding silage with different level of pure protein

V. V. Dubinskiy, M. Hoeltershinken, V. V. Vlizlo

The results of researches of biochemical indices and free aminoacids content in blood of German black-and-white breed cows at feeding different cereal herbs with different content of pure protein are presented in this article. It was established, that in the blood of cows fed silage with pure protein level - 48,2 % from raw protein, all investigated biochemical indices were within the frames of physiological fluctuations. In blood of cows fed silage with decreased level of pure protein (40,9 % from raw protein) the decrease of free non-substitution aminoacids (cysteine, arginine, glycine, alanine, tyrosine, methionine, valine, phenylalanine, leucine, isoleucine) crude calcium and selenium was observed in comparison with control. Other biochemical indices changed insufficiently (vitamins A and E, urea, non-organic phosphorus, copper, GGT, GlDG) and the tendency to their changes was established, the activity of AST and creatine kinase and concentration of crude bilirubin increased and the amount of cholesterol and zinc decreased

Download full text in PDF format