[Blood proteins of calves and their 1st-calver mothers during the early post-natal period].

The calves of the Red Spotted breed and their first-calver mothers were subject to the study of total proteinemia and of the changes in protein fractions before parturition and in a ten-day period of post-partal development. The relations between these parameters were also studied. Calves up to the 10th day of life show a rise in total proteinemia whereas cows show insignificant changes. The level of albumins in calves exhibits a slight fluctuation, whereas in mothers it increased before parturition, followed by a drop which lasted until the end of the test period. alpha-globulins show a decreasing tendency in calves from the fourth day of age and have higher values than in cows. beta-globulins in cow blood serum before parturition increase. The level of gamma-globulins in calves rises until the end of the first week of life. A linear correlation dependence was found between the values of beta-globulins in cows and calves in the first two post-partal days and between the value of beta-globulin level of mothers prior to parturition and of calves at birth. In gamma-globulins the correlation dependence is always significant, starting the first day after birth.