Influence of genotype of lam on the consumption and use of nutrients in the diets

Relevance . The results of a study of the consumption and use of dietary nutrients by purebred and crossbred rams are presented. Methodology . To conduct the study, experimental groups of rams were formed from newborn young animals: I— Romanovskaya breed, II— 1/2Romanovskaya × 1/2edilbai, III— × 1/4Romanovskaya × 3/4edilbai. To study the consumption and use of nutrients in the diet, a balance experiment was carried out using the VIZh method (A.I. Ovsyannikov, 1976). Results . It has been established that crossbred young animals consume and use the nutrients of the diet most intensively. It is enough to note that the coefficient of digestibility of nutrients by young animals of the experimental group III was higher than by young animals of groups I and II, on average by 0.3–1.75. The results obtained indicate that crossbred young animals of groups II and III made better use of dietary nutrients than purebred peers. At the same time, crossbred young animals of group III were characterized by a better ability to digest nutrients in diets.