On the basis of the "Komarova" farm (Magadan, Magadan region), the effect of introducing a new non-traditional component feed additive of plant origin into the diets of young cattle was studied. The research was carried out during the stall period. For the experiment there were taken four groups of animals (14-16 months of age) divided at random in accordance with the genotype into control and experimental groups of ten animals each. The first two groups (control, experiment) included purebred Holstein bulls, the other two – hybrids of the 1st generation (1/2 Holstein × 1/2 Herefords). For the experimental groups, the main diet was supplemented with a component feed additive consisting of cedar elfin (Mountain pine) flour and lichens (alpine cladonia (Cladonia alpestris), Icelandic cetraria (Cetraria islandica)). The results of the experiment has shown that the feed additive, consisting of 120 g of cedar elfin needle flour and 50 g of lichen flour (80% of Cladonia alpestris and 20% of Cetraria islandica), has a positive effect on the intensification of metabolic processes in the animals. The digestibility of crude protein increased by 1.29-4,19 g (1.7-5.6 %); that of the organic matter – by 6.65-8.90 g (11.0-14.3 %); NFE (nitrogen-free extracts) – by 7.80-9.18 g (14.14-15.70 %). An increase in the digestibility of feed nutrients had a positive effect on an increase in live weight gain by 0.60-3.0 g (1.35-5.93 %). An increase in feed conversion was 0.24-6.8 MJ (0.20-6.74 %); feed protein – by 0.02-0.09 g (1.22-6.17 %). Crossbred bulls turned out to be more responsive to changes in the ration of feeding and showed better results in all studied parameters. The effectiveness of using the additive is due to the fact that the raw material for the production is obtained from wild plants growing in nature in sufficiently large volumes. They do not require significant costs for harvesting and preparation for feeding.

The paper presents the results of research on the introduction of phytogenic feed additives from local plant resources in the diets of egg-laying hens of different genotypes. The degree of assimilation (digestibility, use) of the feed nutrients and the conversion of the consumed feed (feed costs per 10 eggs and per 1 kg of egg weight) were determined. The costs of metabolizable energy and protein of feed per unit of production were analyzed. The composition of phytogenic feed additives under study: 1.5% (of the basic diet) flour of brown seaweeds (kelp) and 1.5% - flour of local wild herbs. It was found that their use in the diets of laying hens helps to intensify metabolic processes occurring in the body of all genotypes of poultry. The digestibility of the consumed forage hygroscopic moisture during the periods analyzed increased by 2.9-3.6%, protein digestibility by 2.9-4.3%, fat digestibility by 3.1-4.0%, nitrogen-free extractive substances by 3.9-4.6%, nitrogen use by 4.9-5.9% to the control indices of each genotype. Intensification of metabolic processes contributed to an increase in the payment for feed by products. Reduction of feed expenses for production of 10 eggs amounted to 5,5-7,3%, for 1 kg of egg weight - 8,4-13,9% to the control. The cost of metabolizable energy and protein of feed to produce a unit of product decreased. The analysis of the data revealed that laying hens of all genotypes responded positively to the inclusion of biologically active feed additive in their basic diet. The most "responsive" genotype (cross) to the intake of nutrients included in the phytogenic feed additive with the diet is the cross "Dekalb White". The birds of this cross showed higher results of intensity of metabolic processes of the body and payment for feed by products.

It was undertook a number of studies on the effects of introducing new non-conventional vegetable supplementary feeds in the diets of dairy cows and industrial laying hens. Plants are not cultivated for their production, but they refer to wild crops growing in the natural habitat in sufficient quantities. The purpose of the research was to determine the effect of introducing non-conventional vegetable supplementary feeds on the productive qualities of cows and laying hens; quality of products (milk, eggs); nutrient digestibility (use) of laying hens and reproductive functions of cows; and to identify the economic efficiency of using these supplementary feeds by changing feed conversion ratio. The composition of supplementary feeds for cows included sea furbelow, creeping pine needles, lichens. Supplementary feeds consisting of sea furbelow flour and wild crops were introduced into the diet of laying hens: fireweed or rosebay willowherb, stinging nettle, and creeping pine needles. The studies were conducted at the agricultural enterprises. The experiments were performed on Ayrshire and Holstein cows of different lactation periods and the Hisex White laying hens of various age and productive periods. Randomized regimens were used, including 2-5 levels of feeding. The groups of cows were formed by the analog to pair matching method; laying hens were formed by the analog to group matching method and were kept in equal zoohygienic conditions. During group formation, no significant differences in body weight and productivity between the formed groups were revealed (P> 0.05), which indicates the correct selection of groups for the research. As a result, cows improved reproductive functions, increased milk yield, milk fat content and feed conversion; hens showed the intensification of metabolic processes, contributing to an increase in productivity, feed conversion and egg quality (P 0.05), which indicates the effectiveness of using new supplementary feeds.

The aim of this work is to study correlations of the frequencies of SSR markers (Inter Simple Sequence Repeat) and live weight of domestic reindeer. A spectrum of 4 amplicons with a fragment size of 240– 330 bp, 350–430 bp, 440–520 bp and 520–570 bp can be considered specific for the Chukchi breed, since deer of all populations is most common. The variability of SSR markers in populations indicates the similarity between them in most allelic frequencies. This confirms the common origin, economic and breeding use of deer of the Chukchi breed. Loci No. 1, 3, 4, 5, 6 are positively associated with each other, while with other loci they have the opposite correlation direction of communication. For all sex and age groups of deer, loci no. 3 (240– 330 bp), no. 4 (330–350) and no. 5 (350–430) are characterized by a moderately crowded inverse relationship with an indicator of live weight. The average value of the correlation coefficient for these loci was equal to: -0.603; -0.648 and -0.646, respectively. By loci No. 6 (440–520 bp), No. 7 (520–570) and No. 8 (650–690), on the contrary, a direct in action and medium in magnitude connection was noted, the correlation coefficient for these loci an average of 0.266; 0.597 and 0.559, respectively. The data obtained allow us to identify trends in the correlation conjugacy of ISSR markers and live weight, and to reduce the search space for genes whose polymorphism is associated with live weight variability in Chukchi populations. Using the analysis of variance, a reliable influence of the «farm» factor (ecology + farm conditions) on the frequency of occurrence of a DNA fragment with an average value of the influence force ηx² = 65,9% was established. The correlation ratio ηx = 0.811 confirms the presence of a close relationship between the attributes.