scholarly journals The role of rhaponticum carthamoides in feeding of dairy cows

2019 ◽  
Vol 49 (5) ◽  
pp. 52-60
Author(s):  
V. A. Voloshin ◽  
D. A. Matolinets ◽  
N. A. Morozkov ◽  
G. P. Maysak
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Positive Impact ◽  
Sugar Content ◽  
The Body ◽  
Metabolic Energy ◽  
Control Group ◽  
Metabolic Processes ◽  
Rhaponticum Carthamoides ◽  
Experimental Group

The results of studies of the use of rhaponticum carthamoides for feeding dairy cows are presented. The experiment was carried out on Holstein cows of black-and-white breed in Perm Territory. Vitaminherbal fl our from green mass of rhaponticum carthamoides at a dose of 0.4 and 1.0 kg per head per day in the period of 10-16 days before calving and in the fi rst 30 days of lactation was introduced into the feeding rations of two experimental groups of cows. High sugar content in rhaponticum carthamoides (from 4.15 to 11.2% in dry matter and metabolic energy from 10.87 to 12.12 MJ/ kg) was noted. In the studied material from this plant, the content of the 20-hydroxyecdysone was 0.49% of active ingredients in the dry matter of the product at a rate of 0.25%. The introduction of rhaponticum carthamoides in the diet of feeding animals contributed to the increase in the intensity of metabolic processes in the body. A gradual increase in cholesterol levels in all experimental groups was noted. The most signifi cant growth was observed in cows of the second experimental group by 0.82 mmol / l or 29.50% (p <0.01). Compared with the fi rst experimental group, the increase was 0.13 mmol / l or 5.2%, and the control group – 0.36 mmol / l or 14.17%. Stimulation of metabolic processes in the body of cows of the experimental groups had a positive impact on reproduction, which was manifested in the reduction of the service period duration, compared with the control group.

scholarly journals The needs and characteristics of feeding dairy cows

2017 ◽  
Vol 19 (79) ◽  
Author(s):  
L. G. Levitskaya
Keyword(s):  
Dairy Cows ◽  
Milk Yield ◽  
Positive Impact ◽  
The Body ◽  
Control Group ◽  
Milk Productivity ◽  
Feed Management ◽  
Feed Costs ◽  
Intensive Course ◽  
Experimental Group

The influence of feed with different contents in them in certain ratios lekarstvennogo and insoluble protein on the body of dairy cows. In particular, digestion in the rumen, digestibility of nutrients of feed, milk productivity and milk quality. Identify the differences in some indicators of digestion in the rumen of cows, the digestion of protein (carrying experience) on the background of the use of the experimental feed. In this grain component was subjected to extrusion and introduced maize, the protein which vikoristannya. Because of this, reduced the solubility of protein from 38% to 29% that is 9%. As a result, extended the time of their digestion in the rumen. So scar microflora sufficiently transformed the ammonia available for absorption of microbial protein, which has a positive impact on the processes of digestion and assimilation of nutrients and contributed to improving milk productivity in cows. The structure of the diets of both groups was identical and included: roughage is 12.5% juicy – 75.0%, concentrated to 12.5%. One fodder unit in the control group had 90.2 g digestible protein in experimental 89.6 g Sharapodinov attitude in control and experimental diets is 0,98. The ratio of mineral substances: CA : P in the control and experience is 1.6 : 1, N : S respectively of 7.3 and 6.9. On a more intensive course of metabolic processes show physiological and biochemical parameters in animals of the experimental group. Namely: reducing the amount of ammonia and the increase in the number of bacteria in the rumen. The composition of basic ration (PR), which included feed management. All experimental animals during the preparatory period received the same diet. Research in accounting period II (experienced) group – experimental mixed fodder in which to reduce the solubility of the protein component of grain (oats, barley, wheat) extrudable and additionally introduced maize grain (15%), the control group received commercial feed. Found that feeding the experimental feed, improved nitrogen metabolism in the organism of cows, heifers, which ultimately increased milk yield by 4.4% (vs. 26.3 to 25.2 kg). The reduction in feed costs and increase milk yield in cows of the experimental group resulted in a reduction of cost of 1 quintal of milk 27.1 UAH. and improve profitability by 2.3% against the control.

scholarly journals The result of using a haylage made of sandpaper in the diets of dairy cows

2020 ◽  
Vol 201 (10) ◽  
pp. 57-63
Author(s):  
Nikolay Morozkov ◽  
Galina Maysak
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Sugar Content ◽  
Control Group ◽  
Class 1 ◽  
High Sugar Content ◽  
Feed Protein ◽  
Positive Effect ◽  
Experimental Group ◽  
Perm Region

Abstract. The purpose of the research was to study the effect of feeding by sainfoin haylage in the dry period (21 days before calving) and in the period of early lactation (50 days after calving) on the metabolic processes of dairy cows and the results of reproduction. The article gives the brief description of sainfoin (Onobrychis arenaria Kit.) as a valuable feed protein crop that can be successfully cultivated in Perm region conditions. High sugar content in sainfoin forage was noted 4.86 %, which is 1.6 times higher compared with standard class 1 for legume haylage first class. Methods. Experiments for use of sainfoin haylage in feeding highly productive cows were conducted in 2018. Cows of the experimental groups received a diet including sainfoin haylage. Cows in the control group received 5 kg of poaceous grass hay as a fodder. The first experimental group got 50 % of forage dry matter as sainfoin haylage. The second experimental group received 100 % of forage dry matter as sainfoin haylage. Results. Hay replacing by equal dry matter amount of sainfoin haylage provided positive effect on immuno-biochemical parameters of cows blood. The protein content increased in the blood plasma of cows during the time of the experiment: in the second experimental group by 4.3 g/l (5.47 %, p < 0.01) and reached 82.80 g/l, in the first experimental group by 1.72 % (p < 0.05), in the control – by 2.28 % (p < 0.05). Feeding sainfoin haylage to cows had a positive effect on their reproductive functions. The service period for cows of the second experimental group was shorter by 8.1 days (9.28 %, p < 0.01) compared with the first experimental group and by 21 days (24.05 %, p < 0.05) shorter than in the control group. The scientific originality of the work is that for the first time the biochemical composition of sainfoin was studied thoroughly in Perm region and the results of sainfoin haylage feeding to animals were presented.

scholarly journals Некоторые аспекты обмена веществ у телят 13-месячного возраста при скармливании вермикулита

2019 ◽  
pp. 33-37
Author(s):  
M.A. Verotchenko
Keyword(s):  
Dry Matter ◽  
The Body ◽  
Dairy Calves ◽  
Control Group ◽  
Standard Diet ◽  
Metabolic Processes ◽  
Biochemical Status ◽  
Group 3 ◽  
Positive Effect ◽  
Experimental Group

Цель исследования изучение биохимического статуса организма телят 1 3месячного возраста при применении вермикулита. Опыт на животных проводили в течение 60 дней. Для опыта были отобраны, по принципу аналогов, 3 группы телят молочного периода выращивания по 9 голов в каждой. Телята контрольной группы получали стандартный рацион, телятам 1й опытной группы к основному рациону добавляли 2 на голову в сутки вермикулита, 2й опытной группе 3 на голову в сутки. Использовали вермикулит (ГОСТ 1286567), выпускаемый ОАО Ковдорслюда . Для изучения состояния обменных процессов в организме подопытных животных отбирали кровь из яремной вены после утреннего кормления два раза: в начале опыта и через месяц после его окончания. Исследования показали, что использование вермикулита в кормлении молочных телят, благодаря многогранным буферным, ионообменным и сорбционным свойствам положительно сказалось на белковоминеральном обмене животных и интенсивности их роста. В опытных группах уровень общего белка вырос в 1,04 1,06 раза, достоверно повысился к концу исследований уровень альбуминов. Целесообразно для нормализации обменных процессов в организме молочных телят использовать добавку вермикулита в количестве 2 и 3 к сухому веществу рациона.The purpose of the research is to study the biochemical status of the organism of calves 13 months of age with the use of vermiculite. The animal experiment was carried out for 60 days. 3 groups of calves of the dairy period of growing of 9 animals in each were selected for the experiment according to the principle of analogues. The calves of the control group received a standard diet, 2 per head per day of vermiculite was added to the main diet of the calves of the 1st experimental group, and the 2nd experimental group 3 per head per day. We used vermiculite (GOST 1286567) manufactured by OAO Kovdorslyuda. To study the state of metabolic processes in the body of experimental animals blood was taken from the jugular vein after morning feeding two times: at the beginning of the experiment and one month after its completion. Researches have shown that the use of vermiculite in the feeding of dairy calves due to its multifaceted buffering, ionexchange and sorption properties has a positive effect on the proteinmineral metabolism of animals and their growth rate. In the experimental groups the level of total protein increased in 1.04 1.06 times and the level of albumen significantly increased by the end of the research. It is advisable to normalize the metabolic processes in the body of dairy calves to use the additive of vermiculite in an amount of 2 and 3 to the dry matter of the diet.

The use of acidifying agents Aquasafe and Veleguard when rearing of broiler chickens

2020 ◽  
pp. 16-27
Author(s):  
L. Gamko ◽  
T. Tarinskaya
Keyword(s):  
Drinking Water ◽  
Organic Acids ◽  
Broiler Chickens ◽  
Positive Impact ◽  
The Body ◽  
Metabolic Energy ◽  
Control Group ◽  
Meat Production ◽  
Feed Conversion ◽  
Broiler Meat

It is known that necessary to replace the components of organic acids, which are part of acidifiers when drinking water to poultry in order to prevent the adaptation of microbes in the gastrointestinal tract. In the poultry industry organic acids are widely used, which are used as acidifiers to preserve the properties of water consumed. The purpose of this work was to evaluate the efficiency of broiler meat production when using acidifying agents of drinking water Aquasafe and Veleguard. The experimental part of the work has been performed in JSC “Kurinoe Tsarstvo-Bryansk” broiler area “Roshcha” in the Pochepsky district. The object of research was the livestock of broiler chickens cross Cobb 500 at floor housing. The effect of water acidifiers on meat productivity has been studied. Groups of chickens have been formed on the principle of pairs-analogues. Broiler chickens of experimental groups have been separated from the main livestock by a grid in the corner of the room for 100 heads in each group. It has been found by a result of research to be optimal dose usage of acidifying agents water Aquasafe and Veleguard to drink to broiler chickens. The positive effect of these acidifiers on the digestion of crude protein, crude fat, crude fiber, contributing to the effective use of nitrogen, which led to an increase in the intensity of growth, young animals’ livability and improved feed conversion. Slaughter yield in the control group was 55,1 %, and in the experimental group 57,2 and 58,4 %, which was by 2,1 and 3,3 % higher with the same level of metabolic energy and nutrients. In chickens that consumed acidifi ers more intensively used nutrients feed for deposition in the body of the components of the carcass, which affected the production. A positive impact of acidifying agents Aquasafe and Veleguard on meat quality in broiler chickens has been found.

scholarly journals Biotechnological aspects of transformation of heavy metal salts and their detoxication in milk of milk cows

2021 ◽  
Vol 262 ◽  
pp. 02010
Author(s):  
Boris Dzagurov ◽  
Oleg Getokov ◽  
Vladimir Gukezhev ◽  
Taladin Kokov ◽  
Vitaly Vorokov
Keyword(s):  
Heavy Metals ◽  
Dairy Cows ◽  
Particle Diameter ◽  
Bentonite Clay ◽  
The Body ◽  
Control Group ◽  
Milk Cows ◽  
Heavy Metal Salts ◽  
Cadmium Lead ◽  
Experimental Group

Based on the results of previous studies on pigs and poultry, in which encouraging results of a significant decrease in the concentration of heavy metals in the body were obtained, respectively, in pork, poultry and eggs, the study provided for the use of the bentonite clay of the Zamankul deposit (RNO-Alania) as an enterosorbent in relation to heavy metals and detoxification of the organism of dairy cows. In order to study the feasibility of using bentonite as an enterosorbent, studies were performed on dairy cows of the Simmental breed in the Kaloyev farm located in st. Zmeyskaya, Kirovsky district of North Ossetia-Alania. To conduct research on the principle of analog pairs, two experimental groups of cows (control and experimental, five cows in each group) of the 3rd and 4th lactation were formed. The experiment lasted for 305 days of lactation from March 2018 to January 2019. Herewith, the control group of cows was fed with a basic diet balanced in all nutritional elements, the experimental livestock, together with the main diet, daily in the composition of the concentrates was injected with crushed bentonite with a particle diameter of 4-6 mm based on the dry matter of the feed (137 g/animal). The study of the concentration of heavy metals (cadmium, lead and zinc) in soil, feed, blood and milk was performed in two periods of lactation (on the 250th and 300th days of lactation). Herewith, an increased content of heavy metals in the soil was established, relative to the MPL: cadmium - 10.1; lead - 7.4; zinc - 9.7 times more, in drinking water: cadmium - 2.5 times; lead - 9.0 times and zinc - 9.7 times more, in feed: cadmium - from 1.7 to 5.3 times; lead - from 1.1 to 1.7; zinc - from 1.0 to 2.5 times the MPL. The inclusion of bentonite to the ration of the animals of the experimental group, in comparison with the control group, in both study periods (250 and 300 days of lactation) contributed to a significant decrease in the concentration of the studied heavy metals in the blood from 17 to 20%, in milk - from 16 to 18 %. The transformation ration values of heavy metals from feed into the body, respectively, into milk, were also lower in the animals of the experimental group, relative to the control.

The effectiveness of feeding complex mineral and vitamin feed additive «Nadezhda» to lactating cows

2021 ◽  
pp. 30-37
Author(s):  
A. R. Farkhutdinova ◽  
M. T. Sabitov ◽  
M. G. Malikova
Keyword(s):  
The Body ◽  
Metabolic Energy ◽  
Feed Consumption ◽  
Feed Additive ◽  
Control Group ◽  
Black And White ◽  
Lactating Cows ◽  
White Breed ◽  
Quality Of Milk ◽  
Experimental Group

The feasibility of using the complex mineral and vitamin feed additive “Nadezhda” in the rations of lactating first-calf heifers of Black-and-White breed has been examined in the article. It has been established that feed contain a low content of elements such as calcium, phosphorus, magnesium, sulfur, manganese, copper, zinc and cobalt. The ratio of nutrients and minerals, the degree of their availability for assimilation by the body does not provide their need. The use of the complex mineral and vitamin feed additive contributed to an increase in the milk productivity of first-calf heifers and the quality of milk, feed consumption per unit of production. All tested recipes of the complex mineral and vitamin feed additive, which have different versions of macro-, microelements and vitamins in their composition had a positive effect on the metabolic processes in the body of animals. For the production of 1 kg of milk in the experimental groups of cows less metabolic energy was spent by 5,09 (P < 0,05) and 8,06 % (P < 0,05), respectively, raw protein by 5,19 and 8,19 % (P < 0,05), digestible protein by 5,12 (P < 0,05) and 8,15 % (P < 0,05) compared with the animals of the control group. At the same time from the cows of the 1st experimental group have been received more milk by 151,6 kg in the amount of 2489 rubles, from the 2nd experimental group by 250,6 kg of milk in the amount of 4248,0 rubles. The prime cost of production of 1 kg of milk in cows of the 1st experimental group in comparison with the animals of the control group decreased by 0,72 rubles, and the 2nd experimental group by 1,21 rubles. The level of profitability of milk production in cows have been fed with additive recipe No. 1, in comparison with the animals of the control group increased by 3,71 abs.%, recipe No. 2 by 9,91 abs.%.

INCREASING THE EFFICIENCY OF USE OF FEED SUPPLEMENTS OF THE LOCAL ORIGIN IN THE DIETS OF DAIRY COWS IN YAKUTIA

2021 ◽  
pp. 46-48
Author(s):  
Н.А. НИКОЛАЕВА ◽  
П.П. БОРИСОВА ◽  
Н.М. АЛЕКСЕЕВА
Keyword(s):  
Sodium Chloride ◽  
Dairy Cows ◽  
Energy Use ◽  
Metabolic Energy ◽  
Control Group ◽  
Group I ◽  
Feed Supplements ◽  
Probiotic Preparation ◽  
High Level ◽  
Experimental Group

В условиях Якутии опытным путем доказано положительное влияние использования кормовых добавок из местных ресурсов в рационах дойных коров на переваримость питательных веществ, использование энергии и повышение молочной продуктивности. Рацион коров состоял из сена разнотравного (10,0 кг) , силоса овсяного (18,0 кг) и комбикорма (2 кг). Животные I опытной группы с хозяйственным рационом получали рецепт №1 из ячменя «Тамми» (27%), овса «Покровский» (35%), пивной дробины (32%), минерального премикса «Мегамикс» (1%), пробиотического препарата «Хонгуринобакт» (2%), поваренной соли (1%). Коровы II опытной группы получали рецепт №2 из ячменя «Тамми» (31%), овса «Покровский» (25%), пивной дробины (38%), минерального премикса «Мегамикс» (1%), пробиотического препарата «Хонгуринобакт» (2%), поваренной соли (1%). Высокий уровень переваримости питательных веществ у коров II опытной группы, по сравнению с животными контрольной и I опытной групп, установлен в отношении сухого вещества на 1,0 и 1,5%, органического вещества — на 2,8 и 2,0%, сырого протеина — на 3,3 и 2,0%, сырого жира — на 2,3 и 1,5%, сырой клетчатки — на 3,0 и 2,0% и БЭВ — на 0,5 и 1,3%. Выявлено, что при одинаковой переваримости коровы контрольной группы потребляли меньше валовой энергии на 4,8 и 3,5 МДж, хуже переваривали энергию на 2,0 и 1,5 МДж. При сравнительно одинаковых потерях энергии выход обменной энергии у коров I опытной группы был выше на 1,5 и 1,1 МДж, чем у сверстниц. За 238 дней лактации получено молока больше, чем от коров контрольной, на 238 кг, или на 10,5% (Р<0,01), и I опытной групп — на 95,2 кг, или на 4,0% (Р<0,05). In the conditions of Yakutia, the positive effect of the use of feed supplements from local resources in the diets of dairy cows on the nutrients digestibility, energy use and an increase in milk productivity has been experimentally proven. The cows' diet consisted of herb hay (10.0 kg), oat silage (18.0 kg), and compound feed (2 kg). The animals of the 1st experimental group with the bulk moulding compound diet received recipe No. 1 from Tammi barley (27%), Pokrovsky oats (35%), brewer's pellet (32%), Megamix mineral premix (1%), probiotic preparation Khongurinobact (2%), sodium chloride (1%). Cows of the II experimental group received recipe No. 2 from Tammi barley (31%), Pokrovsky oats (25%), brewer's pellet (38%), Megamix mineral premix (1%), probiotic preparation Khongurinobakt ( 2%), sodium chloride (1%). A high level of digestibility of nutrients in cows of the II experimental group, in comparison with animals of the control and I experimental groups, was established in relation to dry matter by 1.0 and 1.5%, organic matter by 2.8 and 2.0%, crude protein — by 3.3 and 2.0%, crude fat — by 2.3 and 1.5%, crude fiber — by 3.0 and 2.0% and nitrogen-free extractive substances — by 0.5 and 1.3%. It was found that with the same digestibility, the cows of the control group consumed less gross energy by 4.8 and 3.5 megajoule, and digested energy worse by 2.0 and 1.5 megajoule. With comparatively equal energy losses, the yield of metabolic energy in cows of the I experimental group was higher by 1.5 and 1.1 megajoule than in their herdmates. During 238 days of lactation, milk was obtained more than from the control cows by 238 kg, or 10.5% (R<0.01) and the experimental group I — by 95.2 kg, or 4.0% (R<0.05).

The effects of a synthetic analogue of the Bovine Appeasing Pheromone on milk yield and composition in Valdostana dairy cows during the move from winter housing to confined lowland pastures

2018 ◽  
Vol 85 (2) ◽  
pp. 174-177 ◽  
Author(s):  
Maria Cristina Osella ◽  
Alessandro Cozzi ◽  
Claudio Spegis ◽  
Germano Turille ◽  
Andrea Barmaz ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Control Group ◽  
Synthetic Analogue ◽  
Skin Area ◽  
Cow Performance ◽  
Daily Milk Production ◽  
And Control ◽  
Experimental Group ◽  
Daily Milk

This Research Communication describes the effects of a synthetic analogue of the Bovine Appeasing Pheromone (BAP) on milk parameters in Valdostana dairy cows during the first turning out from tie-stalls to confined lowland pastures around the farms. Thirty healthy lactating Valdostana cows were enroled in the study and randomly divided into 2 groups: experimental group (EG, n = 15) and control group (CG, n = 15). The two groups were separately housed in the same farm and managed outside in two different pens. Treatment (BAP and solution) and control (solution only) were poured on the nuchal skin area between the horns when the animals were inside the farm at the feeding rack every 7 d for 28 d (T0–T4). Milk samples were evaluated at the same time points (T0–T4). Daily milk production (kg/day) was higher in the EG than in the CG, particularly during the first day after the turning out to pasture (T1). Somatic Cell Count (103 cells/ml) was higher in the placebo group than in the EG, especially at T1. Proteins, fat, fat-free dry matter and casein (g/100 g) were not affected by the treatment. In T1 urea (mg/dl) content was higher in CG vs. EG, suggesting a more correct metabolic balance in the group treated with BAP. The use of BAP appears to modulate adaptation in ways that may improve dairy cow performance in the context of changes in management routines.

EXCHANGE OF CALCIUM AND PHOSPHORUS IN THE BODY OF LACTATING SIMMENTAL COWS WHEN FEEDING FEED ADDITIVES FROM LOCAL RESOURCES IN YAKUTIA

2020 ◽  
Vol 15 (5) ◽  
pp. 708-718
Author(s):  
P.P. Borisova ◽  
◽  
N.A. Nikolaeva ◽  
N.M. Alekseeva ◽  
◽  
...  
Keyword(s):  
Dry Matter ◽  
Feed Additives ◽  
The Body ◽  
Metabolic Energy ◽  
Mineral Supplements ◽  
Local Resources ◽  
Calcium And Phosphorus ◽  
High Level ◽  
Positive Effect ◽  
Experimental Group

The article presents the results of studies on the digestibility of nutrients and the metabolism of calcium and phosphorus in dairy cows. The balance of minerals in the body of cows when feeding feed additives from local resources indicates that the content of macro- and microelements in the diets of animals during the period of the experiments basically corresponded to the norms. The use of protein-vitamin-mineral supplements from local components (barley "Tammi", oats "Pokrovsky", dry brewer's grains, zeolite-hongurin, probiotic preparation "Khongurinobakt", as well as factory components: mineral premix "Megamix", synthetic amino acid – lysine and table salt) balanced the diet for missing nutrients and improved the palatability of the main feed. In the studied diets, 1 ECU had digestible protein – 107.1 g, 125 MJ of metabolic energy and 14.81 kg of dry matter. The ECE concentration in 1 kg of dry matter was 0.66. Feeding by cows of the 2nd experimental group of the recipe for feed additives No. 2 contributed to better digestibility and use of nutrients in the rations. The digestibility of nutrients of cows was higher in cows of the 2nd experimental group, while a high level of digestibility in comparison with the control and 1st experimental groups was established in relation to dry matter by 1.0 and 1.5%, organic matter by 2.8 and 2.0%, crude protein by 3.3 and 2.0%, crude fat by 2.3 and 1.5%, crude fiber by 3.0 and 2.0% and BEV by 0.5 and 1,3%. As a result of the study of the balance of minerals in the body of cows, the positive effect of using feed additives from local resources in the diets of cows has been proven. Consequently, the improvement in the metabolism of calcium and phosphorus in the diet is explained by the fact that protein-vitamin-mineral feed additives had a stimulating effect on the state of metabolic processes and the health of animals in general.

Influence of energy supply of diet of cows on dairy productivity and biochemical blood status

2021 ◽  
Vol 1 (3) ◽  
pp. 71-77
Author(s):  
A. V. Golovin ◽  
◽  
R. A. Rykov ◽  
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Dry Matter ◽  
Raw Materials ◽  
Fat Content ◽  
The Body ◽  
Metabolic Energy ◽  
Black And White ◽  
Feed Costs ◽  
Experimental Group

In a research and production experiment carried out in the milk farm of «Klenovo-Chegodaevo» (Moscow) on two groups of holsteinized black-and-white cows with a milk yield of 7000 kg of milk per lactation, 20 heads each, it was found that an increase in the concentration of metabolic energy (CME) in the dry matter of the cows ration from 10,7 to 11,0 MJ/kg in the period from 21 to 120 days of lactation, due to the inclusion of protected fat in the diet of cows in the experimental group, in the amount of 300 g/head/day, produced on the basis of vegetable raw materials, contributed to an increase in milk yield of 4% fat and milk fat yield by 9,5% (p<0,05) for 120 days of lactation, while reducing feed costs for its production, expressed in CME by 5,4%. More intensive milking of cows in the experimental group in the new calving period had a positive effect on the tendency to increase milk yield of standard (4%) fat content and the yield of milk fat in general for 305 days of lactation by 7,4% (p>0,05), compared with control. Calculations of economic efficiency have shown that the use of fractionated fat in the amount of 300 g in the ration of high-yielding cows during the milking period from 10,7 to 11,0 MJ/kg can reduce the cost of 1 quintal of milk of base fat content (3,4%) produced by cows from the experimental group for the first 120 days of lactation by 43,6 rubles. or by 1.9% while receiving additional profit from its sale in comparison with the control in the amount of 3502,5 rubles. for 1 head. Biochemical studies of the blood of cows in the experimental groups, carried out on the 120th day of lactation, revealed a tendency for a more intense course of protein and lipid metabolism in the body of cows was revealed, who received a diet with an increased to 11,0 MJ/kg level of CME in dry matter of the diet, due to the use of protected vegetable fat in an amount of 300 g.

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