Age-related changes in productive qualities and elemental status оf Orenburg breed goats

Introduction. Increasing the productivity of animals and the realization of their genetic potential largely depends on a full-fledged balanced feeding, which can be ensured only when using various balancing additives, in particular premixes, as part of diets. At the same time, it is worth noting that the greatest effect from the use of premixes is observed when developing their formulations taking into account specific feeding and maintenance conditions. In this regard, it is relevant to study the effectiveness of the use of the targeted premix PremiumPremix KMC in feeding lactating cows.

Object of study. The object of the study was lactating cows of the Holstein breed.

Materials and methods. Scientific and economic experience in studying the effectiveness of the use of target premix in the diets of dairy cows was organized in the conditions of one of the enterprises of EkoNivaAgro LLC in the Voronezh region. For this purpose, 20 cows were selected according to the principle of analogues, randomly divided into 2 groups (control and experimental). The cows of the control group received a premix prepared according to the Gost recipe, the experimental group received a premix PremiumPremix KMK, 150 g per day per head. During the experiment, indicators of milk productivity, digestibility and nutrient utilization, as well as hematological and biochemical parameters of blood were studied.

Results and conclusions. For a more complete realization of the genetic potential, increasing productive indicators, it is necessary to take into account the peculiarities of feeding and keeping animals when developing premixes. The use of PremiumPremix KMK in cow diets allowed to increase the average daily milk yield by 5.61%, the percentage of fat in milk by 0.05%, protein in milk by 0.15%, while there was an increase in the level of digestibility of dry matter by 1.25%, crude protein by 1.56%, crude fat by 1.63%, crude fiber – by 1.08%. The analysis of hematological and biochemical parameters showed that cows consuming the studied premix had a more intensive metabolism, which had a positive effect on milk productivity.

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