[The biological value of the proteins of dairy products with varying contents of lactose].

In experiments on growing Wistar male rats biological value of proteins was estimated in 5 milk products containing proteins: "Detolact", "Humana O", "Novolact MM", lactalbumin and "Dialact" containing from 17 to 58% of lactose. The final level of lactose in the ration (7% of protein by mass) varied from 4.4 to 30.6%. The parameters of protein biological value in the tested products did not significantly differ from those of the control protein (casein) that has proved the validity of using rats for investigation of biological value of proteins in the rations containing up to 30% of lactose.