This article describes the effect of pre- and probiotics on the digestibility of feed by newborn calves. The calves of the experimental groups had a high growth energy, which was reflected in the absolute growth rates and their development.

Complex research is carried out on the rational use of natural pastures with seasonal use in a specific area. The research was conducted in 2015-2017 on the lands of “Batyr” farm in Korday district of Zhambyl region. The pasture lands of the farm consists of 5 independent sites and are located in 3 geographical areas: foothill-steppe (950 hа), foothill-dry steppe (1370 hа) and foothill-semi-desert (1880 hа). The total area of distant pastures is 4.200 hectares. As a result of conducting of geobotanical researches, the farm territory of peasant farm "Batyr" in Korday district of Zhambyl region was divided into seasons (spring-summer-autumn) of their use, the yield of natural herbage and live weight gain of animals was determined. Results of accounting of productivity of natural herbages on zones, seasons of year are given in article and the gain of livemass of animals for the pasturable period is defined. When determining efficiency of sheep it is revealed that higher additional weight of a liveweight is received in experimental group of animal. The seasonal pasture on average in three years of researches at the end of the pasturable period provided an increase of a live weight of rams on 3.370 kg/head at ewes on 8.020 kg/head and lambs of birth year on 8.640 kg/head is more in comparison with control groups of animals. It should be noted that for the pasturable period the increase of alive mass of animals in experimental group in 2017 is higher than a research in comparison with previous years. In 2017 at a pasture of animals on seasonal sites it was applied intra seasonal pasture turnover at which unproductive driving of animals in search of a forage on the grazing square is practically reduced three times, besides degradation of the pasturable territory is completely excluded. It was found that the use of seasonal use of pastures provides more weight gain studied animals compared to animals that graze in one place with an unsystematic manner of grazing. The implementation of the results created the conditions for the restoration of degraded pastures with an increase in the growth and development of vegetation cover up to 15-18 % and an increase in livestock production through rational grazing up to 12 %.

In modern conditions, the problem of the incidence of cows with high productivity in the postpartum period is relevant. It is these animals that are more susceptible to various diseases, primarily due to violations of the technology of keeping and feeding, weak body resistance, heavy loads during fruiting and milk production. It is known that as a result of various metabolic disorders, calving of cows in farms proceeds with various deviations. The lack of calcium in the blood due to hormonal disorders leads to hypocalcemia and paresis after calving, which is often the cause of death of animals. Therefore, the improvement of prevention schemes and treatment of puerperal paresis in cows is very relevant. Purpose of the article – Improvement of preventive and therapeutic measures for postpartum paresis in cows on the basis of the Tassu farm in Akmola district. The work was carried out under production conditions on a livestock farm in the Akmola region, in the farm "Tassu" in the spring and summer. The object of the study were black-motley cows with a pregnancy period of 250-260 days. 22 animals were selected in the experimental group, 12 animals in the control group. The average weight of animals is 567 ± 34.5 kg, age 5-6 years. The cows of the experimental group received injections of the drug Karsulen, which included: 2 % Cardus marianus D3, 1 % Sulfur D6 and 1 % Arsenycum album D6. Karsulen was administered to cows intramuscularly or subcutaneously at the rate of 1 ml per 100 kg of animal weight, the dose volume should not be less than 5 ml per animal. In the postpartum period, in the complex therapy of postpartum paresis in cows, Karsulen is used intramuscularly or subcutaneously 1-2 times a day. The use of the drug Karsulen with the composition: 1 % Cardus marianus D3, 1 % Sulfur D6 and 1 % Arsenycum album D6 has a regulatory effect on protein, carbohydrate, fat metabolism, restores impaired function of the gastrointestinal tract, liver and kidneys.

The degree of dаmаge to deer by the lаrvаe of Oedemаgenа tаrаndi of the Hypodermаtidаe fаmily depends on the number of femаles of the subcutаneous gаdfly in the summer. For the development of meаsures to combаt deer gаdflies, vаrious methods hаve been tested over the yeаrs, аmong them methods of wаtering аnd externаl locаl аpplicаtion. For this purpose, mаny reseаrchers tested dipterex (80 %), crystаlline chlorophos (97 %) in the form of аn 8 % solution, tiguvon, ricifon, dioxаfos, sulfidophos-20 аnd ectopor (2 % cypermethrin) аnd other drugs. Vаrbeks 35 %, Bаytex-50, Fenthion-50, Nаtаsol аnd Etаcid, etc. were tested intrаmusculаrly in vаrious doses on deer. The purpose is to study the prevаlence аnd effectiveness of the treаtment of edemаgenosis in sikа deer in the Ussuriysk urbаn district. The reseаrch wаs cаrried out аt the deer fаrm "Borisovskаyа". For the experiment, three groups of deer were formed with 6 heаds eаch. In order to study the therаpeutic аnd prophylаctic efficаcy of the two groups of drugs Аversect-2 аnd Dectomаx, the аnimаls of the first experimentаl group were injected with the drug Аversect-2 subcutаneously аt the rаte of 1 ml per 50 kg of аnimаl weight, deer of the second experimentаl group were injected subcutаneously with Dectomаx аt а dose of 0.2 mg per 1 kg of mаss, which corresponds to 1 ml of solution per 50 kg of mаss. The prepаrаtions were аdministered immediаtely аfter the end of the summer of gаdflies (end of July-beginning of Аugust). The third group of deer did not receive drugs, аnd it remаined the control group. The incidence of sikа deer entomosis in the Ussuriysk urbаn district for three yeаrs wаs quite high аnd remаined аt the sаme level for аlmost the entire period (43.21-48.8), with а slight decreаse in 2021 to 37.4 %, which wаs most likely due to the climаtic conditions of this period. Of the two selected drugs with seemingly the sаme spectrum of аction, the best results were obtаined on the deer of the second experimentаl group, where the drug "Dektomаx" wаs used, while the EI wаs significаntly (two times) lower thаn in the first experimentаl group аnd аmounted to 16.7 % versus 33. 3 %, аnd АI - 0.03, аgаinst 0.83.

In this article, comprehensive studies have been conducted on the rational use of natural pastures, taking into account the seasons and typology, which allows increasing the grazing capacity of forage lands, as well as obtaining high-grade valuable and cheap livestock products. Rational maintenance of livestock on pastures not only reduces fuel costs by 6-7 times, equipment, labor and total feed costs by 2-3 times compared to the content of grazed animals, but also improves metabolic processes and reproductive functions of animals. This determines the great advantage of pasture feeding in the production of important livestock products. In the conditions of vertical zonality of the Zhambyl region, a significant reserve for increasing the production of mutton is their grazing on pasture with the use of pasture turnover; which allows the most efficient use of natural forage lands, increase the live weight and fatness of animals.