[Effect of feed proteins on serum proteins in poultry infected with S. gallinarum pullorum]. / Vliianie na beltuchinite v khranata vurkhu serumnite proteini u ptitsi, infektirani sus S. gallinarum pullorum.

The effect was studied of the protein component of feed on the serum-protein profile in a Salmonella gallinarum pullorum infection on a model of birds of the Leghorn and Cornish breeds, participating in three age groups. In terms of feeding the birds were divided into two groups: I - controls, fed standard mixtures, and II - test birds, fed mixtures of low protein amounts. The birds were bled at definite intervals following their inoculations. The total proteins of the blood serum were determined, and the dynamics of the protein fractions of the serum was followed up through microelectrophoresis. Dispersion and statistical analysis was employed in data-processing. It was found that with the lowered amount of proteins in the ration of birds infected with Salmonella gallinarum pullorum there appeared changes in the protein spectrum - lower total protein, and a rise of the alfa - globulin fraction along with the depression and delayed synthesis of the beta- and gamma-globulin fractions of the blood serum. Greater were the changes in the serum-protein spectrum of birds at the age of 45 days, however, no breed differences were observed.