Forecast of milk productivity of cattle according to activity of blood enzymes (review)

The correlations between activity of blood serum enzymes and determinants of cattle productivity were considered. It was shown, that positive correlations between activity of blood serum enzymes and milk productivity permit to rise the effectiveness of animals selection during the resultant action of biological catalyzer particularly. The possibility of use of indices of enzymes activity at the early stages of ontogenesis as marker determinant for the animals breeding and forecast of milk productivity was discussed.