An assessment of the growth processes of calves of Holstein black-and-white breed in the milk period of postnatal ontogenesis and the nature of the relationship of its indicators with blood protein parameters is given. The work is done on the basis of SPK Koelginskoe them. I. N. Sundeeva (Chelyabinsk region) in 2019–2020. To run on the principle of close analogues formed: an experimental group (n = 10), calves in which 1, 3 and 6 months blood was taken for investigations and were determined monthly live weight. It was found that the live weight of heifers from 1 to 6 months of age increases from 41,50±0,35 to 143,40±0,75 kg (Cv = 1,65–2,60 %). The level of average daily gains in body weight in the period of 1–3 months is 611,67±9,95 g, and from 3–6 months – 724,44±8,89 g (Cv = 3,88–5,15 %). Live weight (LM) is statistically signifi cantly related in a pair of features “LM – albumins” (r = 0,70–0,87) and “LM – urea” (r =– 0,79–0,93). Stable correlations were found in the pair “LM – somatotropin” (r = 0,60–0,72) and “LM – IGF-1” (r = 0,55–0,79).

The main task of modern animal husbandry is the preservation of young cattle. Animal husbandry is one of the most important branches of agriculture in the Russian Federation. In order to get a healthy livestock and increase productivity, it is necessary to monitor the completeness of its feeding from the birth of the calf. Studies of Russian and foreign scientists show that the inclusion of probiotics in animal feeding reduces feed expenditures, reduces the duration of rearing, increases the livability of animals, and also contributes to the formation and normalization of the gastrointestinal microflora, while remaining safe for people. The use of enzymatic probiotics in feeding from the first days of life contributes to the formation of normal microflora and the formation of intestinal biocenosis, which in turn leads to the preservation of young animals and minimizing the incidence of livestock diseases. The use of the enzyme probiotic Vitacell has a positive effect on the growth of calves, contributes to the early formation of rumen microflora and reduces the risk of dysbacteriosis and diarrhea. The use of Vitacell improves the clinical and biochemical parameters of blood. For example, the amount of hemoglobin in the experimental group increased in 12 times, red blood cells in 2 times, the color index decreased in 0,3 times, the amount of total protein in the blood serum decreased in 7 times. In the control group the amount of hemoglobin increased in 8 times, red blood cells in 1,5 times, the color index was higher by 11 %, lymphocytes by 34 % more than the average norm, a decrease in segmentonuclear neutrophils by 18,2 %. Scientific and economic experiment has been carried out under the environments of LLC “Priamurye” in the Tambov district in the Amur region on calves of Black-and-White breed. We have studied the growth rates of calves in the pre-weaning period and established the hematological status at the beginning and end of the experiment. The purpose of our research was to study the influence of the enzymatic probiotic Vitacell on the growth and hematological status of calves under the environments of LLC “Priamurye”.

The results of complex treatment of calves with bronchopneumonia have been presented in the article. It has been shown that the combined use of means from plant raw materials with the antibacterial drug Pulsooxit 20 % helps to alleviate the symptoms of the disease and earlier recovery of calves. As calves recover, hematological indicators are restored to the level of clinically healthy animals. The results have been obtained indicate the effectiveness of the combined use of an antibacterial drug of the tetracycline series and means from vegetable raw materials for bronchopneumonia of calves, which will be able to be recommended for practitioners in this pathology.

The effectiveness of treatment of the consequences of cow thelaziosis disease by retrobulbar novocaine blocking is 100 % with a single manipulation, even in severe cases of the disease, in the case of the disease with corneal ulceration two-fold repetitions are required. In this case, the blocking is performed in the field with limited use of additional medications and water, as well as without an assistant.

The purpose of the research was to study the effectiveness of the drug Iversan in intestinal nematodes, infestations of sheep and pigs. The experiments have been performed in two departments of the breeding farm LLC “Avangard” in the Ryazan region. Iversan has been used in the first experimental group orally individually once, when mixing the required amount of the drug with water at a dose of 1 ml per 200 kg of animal weight. In the second, twice at intervals of 12 days, in order to influence the imago of blood-sucking flies that emerged from the pupae and preserved their viability after initial treatment. Sheep of the control group Iversan has been not appointed. Piglets have been applied in a group way twice with an interval of 12 days, while mixed with one third of the daily norm of water at the rate of 1 ml per 100 kg of animal body weight and given from 7 to 9 hours – 50 % and from 16 to 18 hours – the remaining 50 %. To control group animals were given water without adding the drug. The results of experimental studies have shown that Iversan has a pronounced effect against intestinal and tissue nematodes, is effective in enterocolitis, bronchopneumonia ascariasis, strongyloidosis, strongylatous etiology of sheep and pigs, as well as against the imago of blood-sucking flies M. ovinus and all stages of development of sarcoptoid mites S. S. var. suis. The duration of the period of clinical recovery of sheep and piglets, yelts of experimental groups was significantly less than that of control animals.

The purpose of our work was to study the treatment and rehabilitation after injuries of the horses limbs. The research has been conducted under the conditions of the International Equestrian Sports Complex “Kazan” in 2019–2020. In the experiments horses of different breeds such as Frisian, Arab purebred, Russian heavy-duty breeds, and others have been used. The diagnosis of limb injuries has been carried out on the basis of anamnesis, clinical signs, ultrasound and X-ray studies. During the complex therapy the course of the process has been monitored and the formation of an “arc” on the limb, thickening and consistency, soreness, the presence of edema, and an increase in local temperature have been taken into account. Free walking, walking, and in general reducing the training load as rehabilitation measures, have been prescribed.

The proposed device in the form of a utility model is aimed at decontamination, disposal of sludge, including urban fecal and other effluents with a reliable safe device based on pyrolysis using combustible gas. The device provides thermal disinfection of non-combustible unknown components of foreign harmful and dangerous substances of sludge of various origins during the technological process.

The purpose of our research was to study the effectiveness of the organization of differentiated feeding of cows in the dairy complex. The research has been carried out in the conditions of LLC “Krasnoe Sormovo” in the Krasnoarmeysky district in the Chuvash Republic. In order to conduct the experiments the experimental and control groups of cows have been formed with 150 heads in each according to generally accepted zootechnical methods. The animals of the control group have been fed with the rations adopted in the farm for dairy cows, which differ in the summer and winter periods. The first experimental group included cows with the daily milk yield of more than 25 kg, as well as new-calved cows in the first 50 days, regardless of productivity. The second group consisted of medium-productive cows the average daily milk yield of which was at the level of 18–24,9 kg, the third group low-productive cows with the milk yield below 18 kg of milk per day. There were also 2 groups of experimental cows of the dry period: first group dry period which consisted of cows 8–3 weeks before calving and dry period – 3 weeks before calving. In each experimental group the cows have been fed rations that differed in the content of metabolic energy, crude protein, crude fiber, etc. The results have been obtained allow us to conclude that the organization of differentiated feeding of cows in the dairy complex, which includes a number of measures, starting from the creation of feeding conditions, ending with its monitoring and control, contributes to an increase in milk productivity and therefore we recommend using this strategy in the feeding of dairy cows.

Researches have been carried out to study the possibility of using bentonite for feeding dairy cows in addition to the main feeding ration taking into account the mineral composition and physic and chemical properties of bentonite of the Zamankul deposit that are useful for digestive metabolism (sorption and ion exchange abilities, catalytic and surface activity, etc.). The reconnaissance experiment, lasting 6 months (from April to October 2018), has been carried out in the farm of the village of Zmeyskaya in the Kirovsky district in the Rebublic Nrthern Ossetia-Alania. For researches, in order to determine the optimal dose of bentonite feed 40 cows of Simmental breed of the third and fourth lactations have been selected, which were divided according to the principle of pairs of analogues into 4 groups of ten heads in each. Monthly control milk yields of cows, laboratory analyses, calculations of coefficients of biological value of milk and biological efficiency of cows, feed consumption per kilogram of milk established the optimal dose of top dressing with bentonite-1,0 % bentonite based on the dry matter of the feeding ration. The coefficient of biological value of the milk has provided by cows 1st experimental group was more than control group by 4,6 % (Р < 0,1), the 2nd experimental group was significantly higher than control by 7,9 % (Р < 0,01), 3rd experimental by 6,6 % (Р < 0,1). The coefficients of biological efficiency of cows, respectively, and economic, were also slightly higher in the animals of the experimental groups in relation to the control group, but the difference between the control and the 2nd experimental group was significant (7,3 % at Р < 0,01). Feed consumption per 1 kilogram of milk in the 1st experimental group was less by 0,15 kg EFU, in the 2nd experimental group by 0,2 EFU and in the 3rd experimental group by 0,17 EFU when compared with the control.

The purpose of our research was to study the influence of input of balanced carbohydrate feed complex Felucene into the ration of Kazakh White-headed steers on the level of their live weight. Four 6-month-old groups of 15 heads in each have formed to carry out the study after bulls weaning. The steers have been housing in a lightweight premise in separate sections on deep permanent bedding. Feeding has been carried out in the barn and feed yard. Steers of the control group have been fed a basic ration consisting of feed produced on the farm. Steers II (experimental) group the ration included 100 g of balanced carbohydrate complex Felucene per animal per day, III (experimental) – 125 g and IV (experimental) group – 150 g per animal per day. Mixed with concentrates complex has been given to young animals. The input of the balanced carbohydrate complex Felucene in the ration of Kazakh White-headed steers when rearing for beef had a positive influence on the weight growth of the young animals. The biggest effect has been observed when using an approved drug at the dose of 125 g/head.