Influence of individual paratype factors on the variability of the development of lambs in postnatal ontogenesis

Goal. To study the influence of number lambs in offspring and age mothers on absolute indicators variability their live weight growth intensity early postnatal ontogenesis. Methods. The research was carried out at birth after they reached 120 days using generally accepted methodological provisions methods biometrics statistics animal husbandry. Results. regularity determined by type established: with an increase individuals offspring, its decrease. Singles showed highest — 15.0%; twins, it decreased to 13.8%, triplets 11.9%. A sufficiently high probable factor mothers’ this trait born as singletons twins established. An raised a mother ewe from one three leads decrease 9–10%. Variability compared previous period are growing almost twice. At same time, pattern related remains similar age. Regardless mothers, general feature index average daily gain is significant advantage over singles. Conclusions. lambs, well likely influences parameters homogeneity population based young animals tends ewe. Indicators marked variability, although higher twins. More homogeneous according investigated characteristics can be obtained ewes whose has already been completed, that is, 4–6 years old animals.