scholarly journals Development of a device for cleansing cow udder teats and testing it under industrial conditions

2021 ◽  
Vol 1 (1 (109)) ◽  
pp. 43-53
Author(s):  
Andriy Paliy ◽  
Elchyn Aliiev ◽  
Anatoliy Paliy ◽  
Katerina Ishchenko ◽  
Oksana Shkromada ◽  
...  
Keyword(s):  
Milk Fat ◽  
Physical And Mechanical Properties ◽  
Control Group ◽  
Mechanical Device ◽  
Technological Parameters ◽  
Mechanical Removal ◽  
Number Of Microorganisms ◽  
Angular Velocities ◽  
Daily Milk Yield ◽  
Experimental Group

Preparing cows for milking is one of the most important operations. Not only the speed of milk production but also the quality of milk depends on the level of the work performed. One of the most effective ways to mechanize the preparation of cows for milking implies the development of a special mechanical brush that cleans and stimulates the teat skin. As a result, there is no need to use additional foam detergents and napkins to cleanse and disinfect teats. A device has been designed for cleansing teats with two rotating brushes. Theoretical studies of the interaction of cleansing elements of the device for mechanical removal of pollutants from the udder teats in the course of milking operation were carried out. Assuming constancy of the modulus of elasticity, shape and roughness of teats, linear and angular velocities of brushes, nap stiffness, and homogeneity of physical and mechanical properties of contaminants on the teat, dependence of force Fe of the mechanical device on length l of the cleansing element and its speed ω was established. Under the condition that force Fe of the mechanical device is smaller than force Fp which causes pain but greater than the force retaining pollutants (adhesion), values of the main design and technological parameters of the developed device were determined: l=8 mm, ω=106 rpm. As a result of production tests, it was found that when using the developed device, the daily milk yield of the experimental group of cows exceeded that of the control group by an average of 1.1 times which has made it possible to obtain a supplement of 132.5 kg of milk. Along with this, there was a 0.19 % increase in milk fat content in the experimental group compared to the control group. The number of microorganisms decreased 2.2 times and the number of contaminant particles decreased 4.6 times

ОБМЕН ВЕЩЕСТВ И ПРОДУКТИВНОСТЬ НОВОТЕЛЬНЫХ КОРОВ ПРИ ИСПОЛЬЗОВАНИИ ПОЛИОКТИЛИРОВАННОГО ПОЛИСИЛИКАТНОГО ГИДРОГЕЛЯ

2019 ◽  
pp. 20-25
Author(s):  
M.G. CHABAEV ◽  
E.Yu. TSIS ◽  
D.V. MALINOWSKI ◽  
R.V. NEKRASOV ◽  
V.V. OHANOV ◽  
...  
Keyword(s):  
Cost Reduction ◽  
Milk Fat ◽  
Crude Protein ◽  
Positive Influence ◽  
Metabolizable Energy ◽  
Cow Milk ◽  
Control Group ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk

Скармливание коровам в период раздоя синтетического полиоктилированного полисиликатного гидрогеля (ПОПСГ)  в количестве 100 г на 1 голову в сутки способствовало повышению среднесуточного удоя натуральной и базисной жирности молока на 7,74 и 16,0%, соответственно, и снижению затрат обменной энергии, сухого вещества, сырого протеина, концентратов на 1 кг молока базисной жирности на 13,0—13,6% по сравнению с аналогами из контрольной группы. Использование ПОПСГ способствовало снижению количества соматических клеток в молоке коров на 27,2% и повышению жира и белка на 0,28 и 0,07% по сравнению с контролем. Бактерицидная и лизоцимная активность крови новотельных коров  контрольной и опытной групп в конце опыта были практически на одном уровне и составили, соответственно, 68,59 и 67,03% и 0,31 и 0,30 мкг/мл. Показатель фагоцитарной активности крови у животных опытной группы равнялся 51,57%, что было выше контроля, соответственно, на 4,78%. Отмечено положительное влияние ПОПСГ на рубцовое пищеварение высокопродуктивных коров. Амилолитическая активность рубцовой микрофлоры в опытной группе животных была выше на 0,47 Е/мл. Общее количество бактерий и инфузорий в рубцовом содержимом подопытных коров находилось на одном уровне и составило в среднем 191,00—214,50 и 165,00—183,67 мг/100 мл рубцового содержимого, соответственно. Дополнительная прибыль от реализации молока коров опытной группы за период опыта равнялась 3258,72 руб. на 1 голову по отношению к контролю.Feeding cows in period of milking synthetic polyoxyling polysilicate hydrogel (SPPH) in the amount of 100 g per 1 head per day contributed to increasing the average daily milk yield natural and basis milk fat by 7.74 and 16.0%, respectively, and cost reduction of metabolizable energy, dry matter, crude protein, concentrates of 1 kg of milk basis of fat content is 13.0 to 13.6% in comparison with analogues from control group. The use of SPPH contributed to a decrease in the number of somatic cells in cow milk by 27.2% and an increase in fat and protein by 0.28 and 0.07% compared with the control. Bactericidal and lysozyme activity of blood of cows of the control and experimental groups at the end of the experiment were almost at the same level and amounted, respectively, 68.59 and 67.03% and 0.31 and 0.30 µg / ml. The indicator of blood phagocytic activity in animals of the experimental group was 51.57%, which was higher than the control, respectively, by 4.78%. The positive influence of SPPH on cicatricial digestion of highly productive cows. Amylolytic activity of the rumen microflora in the experimental group of animals was higher by 0.47 U/ml Total number of bacterias and protozoans in scar contents of the experimental cows was on the same level and amounted to an average of 191.00—214,50 and of 165.00—183,67 mg/100 ml scar content, respectively. Additional profit from the sale of milk of cows of the experimental group over the period of experiment was equal to 3258,72 RUB on the head relative to the control.

IMPACT OF NEW ACTIVATOR RUMINAL MICROFLORA ON DAIRY COWS EFFICIENCY

2020 ◽  
Author(s):  
Д.Ю. ГРИГОРЬЕВ ◽  
Д.А. ПИРОГОВ ◽  
Д.В. ФРИЗЕН
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Milk Yield ◽  
Milk Fat ◽  
Economic Effect ◽  
Control Group ◽  
Entire Group ◽  
Average Content ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk

Изучено влияние на продуктивность коров нового активатора рубцовой микрофлоры — «МегаБуст Румен» (МБР) на основе инактивированного ферментационного экстракта Trichoderma longibrachiantum и специализированного штамма дрожжей Saccharomyces cerevisiae в двух опытах. В первом эксперименте в опытной группе коровы в транзитный период получали по 100 г/день МБР за 7 дней до отела и с 1 по 150-й день лактации, в остальном содержание и кормление животных опытной (n=10) и контрольной (n=10) групп было идентичным. В среднем в сутки коровы в опытной группе давали молока 41,26±0,91 кг при среднем содержании молочного жира 3,8±0,33% и белка 3,34±0,06%, что на 6,81±0,62 кг молока больше (Р<0,05), чем в контрольной группе (34,82±0,78 кг при среднем содержании молочного жира 3,55±0,13 и белка 3,08±0,09%). Использование МБР в опытной группе способствовало существенному увеличению среднесуточного удоя (+1500 кг) в опытной группе по сравнению с контрольной на 1 голову, пересчитанного на содержание жира 3,5%, за первые 150 дней лактации. Экономический эффект применения МБР — это дополнительный чистый доход на 1 голову за период эксперимента — 40037 руб. Во втором опыте, который проводился на всей группе лактирующих коров, при скармливании на 1 голову в сутки 100 г МБР отмечали повышение добровольного потребления сухого вещества (+2 кг СВ), увеличение среднесуточного удоя (+4,4 кг) на 1 голову в день. Возврат инвестиций в активатор рубцовой микрофлоры на 1 руб. составил 12,7 руб. The effect of new rumen microflora activator — MegaBust Rumen (MBR) on the basis of inactivated fermentation extract Trichoderma longibrachiantum and a specialized strain of yeast Saccharomyces cerevisiae on the cows productivity was studied in two experiments.In the first experiment, in the experimental group, the cows received MBR in the dose 100 g/day in the transit period 7 days before calving and from the 1st to the 150th day of lactation, otherwise the keeping and feeding of the animals of the experimental and control groups were identical. In average, per day, cows in the experimental group gave milk 41.26±0.91 kg with an average content of milk fat of 3.8±0.33% and protein of 3.34±0.06%, which is 6.81±0,62 kg of milk is more (P<0.05) than in the control group (34.82±0.78 kg with an average content of milk fat of 3.55±0.13 and protein of 3.08±0.09%). The use of MBR in the experimental group contributed to a significant increase in the average daily milk yield (+1500 kg) in the experimental group compared to the control for 1 head, calculated on the fat content of 3.5% for the period of first 150 days of lactation. The economic effect of the use of MBR is an additional net income per head for the period of the experiment was — 40037 rubles. In the second experiment, which was conducted on the entire group of lactating cows, when feeding 100 g of MBR per head per day, an increase in voluntary consumption of dry matter (+2 kg DM), an increase in average daily milk yield (+4.4 kg) per 1 head per day were noted . Return on investment in the activator of ruminal microflora by 1 ruble amounted to 12.7 rubles.

PASSPRO SOY FEED PRODUCT IN THE DIETS OF NEWLY CALVED HIGHLY PRODUCTIVE COWS

2020 ◽  
pp. 263-267
Author(s):  
Е.G. Chuprina ◽  
◽  
D. А. Yurin ◽  
N.А. Yurina ◽  
◽  
...  
Keyword(s):  
Milk Yield ◽  
Soy Protein ◽  
Milk Fat ◽  
Live Weight ◽  
Control Group ◽  
Holstein Breed ◽  
The Past ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Daily Milk

Studies conducted in farm conditions, the company, OOO PZ «Nasha Rodina» in Sokolovsky village of Gulkevichsky district of Krasnodar region. The aim of the research was to study the use of the PassPro Soy feed product consisting of protected soy protein in the diets of new-bodied highly productive cows. 2 groups of cows of the red-mottled Holstein breed were formed, selected according to the principle of pairs-analogues: by age in calving, calving time, live weight, productivity for the past lactation, fat and protein content in milk. The ration of the first control group was the ration accepted on the farm for newbodied cows. The diet of the second experimental group was the same as in the first control group, only 1.5 kg of compound feed was replaced with 1.5 kg of PassPro Soy, which is a protected soy protein in the form of a 5 mm granule. During the milking period, the daily milk yield of cows in the control group was 30.80±1.07 kg. The daily milk yield of cows of the second group, where 1.5 kg of compound feed was replaced by 1.5 kg of PassPro Soy, significantly increased by 6.6 %. Due to the increase in the gross milk yield, there is a tendency to increase the amount of milk fat in the milk of cows of the second group by 6.9 %, as well as milk protein by 11.3 %. In the experimental group, when replacing 1.5 kg of feed taken on the farm with 1.5 kg of PassPro Soy, milk productivity increased by 2.03 kg. Additional profit from the sale of milk in the experimental group increased by 48.72 rubles. for 1 head per day. The economic efficiency in the second experimental group was 6.30 %.

The effectiveness of use RUSMA additive in the rations of lactating cows

2020 ◽  
pp. 28-37
Author(s):  
S. Sukhanova ◽  
N. Pozdnyakova ◽  
F. Yaroslavtsev
Keyword(s):  
Milk Fat ◽  
Raw Materials ◽  
Fat Content ◽  
Feed Additives ◽  
Control Group ◽  
New Mineral ◽  
Milk Productivity ◽  
Black And White ◽  
Lactating Cows ◽  
Experimental Group

The results of researches on the development of new mineral feed additives based on raw materials produced by Uralchem and the study of the eff ectiveness of their use in the rations of lactating cows have been presented in the article. The experiment has been carried out in the conditions of LLC “PF Barabinskoe” in the Dalmatovsky area in the Kurgan region where 3 groups of lactating cows of Black-and-White breed have been formed. Animals in the control group have been received the ration adopted in the farm, the 1st experimental group with the additive RusMA No. 1 at a dose of 150 g, the 2nd experimental group– with the additive RusMA No. 2 at the dose of 350 g. The use of experimental mineral additives in feeding lactating cows allowed us to increase their milk productivity and profi tability of production. At the same time, the best eff ectiveness was shown by the additive RusMA No. 2 at the dose of 350 g/head/day. The use of RusMA additives during the experiment period (105 days) allowed to increase the milk productivity of cows in the 1st experimental group by 6,03 % and in the 2nd experimental group by 8,24 %. Taking into account the fat content in milk, this diff erence was 6,31 and 8,53 %, respectively. The energy value of milk from cows of the experimental groups was higher compared to the control group by 2,45 and 1,76 %, respectively. According to the content of dry matter in milk, cows of the 2nd experimental group exceeded the control and 1st experimental group by 0,39 and 0,12 abs.%, respectively. The maximum milk fat content has been observed in the milk of cows of the 1st experimental group by 0,03 and 0,01 abs.% more than in the control and 2nd experimental groups, respectively. In terms of protein content, the cows of the 2nd experimental group signifi cantly exceeded the control group by 0,10 abs.% and the 1st experimental by 0,04 abs.%. The content of milk sugar in the 2nd experimental group was higher than in the control by 0,30 abs.% and compared to the 1st experimental by 0,11 %. Signifi cantly more calcium and phosphorus were contained in the milk of cows of the 2nd experimental group by 4,58 % (Р ≤ 0,001) and 2,86 % (Р ≤ 0,05), compared with the control group. The expenditures of feed in the EFU for the production of 1 kg of milk in animals of the 2nd experimental group was less by 5,13 % than in control cows and by 2,63 % compared to the 1st experimental group. The prime cost of 1 centner of milk was lower in the 2nd experimental group by 3,94 %, in the 1st experimental group by 2,65 % compared to the control group. The level of profi tability of milk production in the 2nd experimental group was higher by 9,0 and 1,0 abs.% in comparison with the control and 1st experimental groups, respectively.

scholarly journals Effect of Chlorella Vulgaris and Japonochytrium sp. Microalgae Supplementation on Composition and Fatty Acid Profile of Goat Milk

2017 ◽  
Vol 65 (5) ◽  
pp. 1585-1593
Author(s):  
Klára Novotná ◽  
Milena Fantová ◽  
Lenka Nohejlová ◽  
Markéta Borková ◽  
Luděk Stádník ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Fatty Acid Profile ◽  
Milk Yield ◽  
Chlorella Vulgaris ◽  
Milk Fat ◽  
Goat Milk ◽  
Control Group ◽  
Basic Composition ◽  
Experimental Group

The aim of this study was to investigate the effect of two species of the microalgae on the milk yield, the basic composition and the fatty acid profile of goat milk, with focus on n‑3 fatty acids. Forty‑five White short‑haired goats were randomly allocated to three groups; the control group (C) with no supplementation microalgae to the diet. The first experimental group (Ch) was supplemented with Chlorella vulgaris and second experimental group (J) has been supplemented with Japonochytrium sp. The Japonochytrium supplementation negatively affected milk yield, but the amount of milk fat (+0.1 %; +0.45 %) and solids‑not‑fat (+0.27 %; +0.86 %) were higher than in group C and Ch. The amount of polyunsaturated (5.527 % ± 0.378) and saturated (71.560 % ± 0.861) fatty acids was also highest in group J. An increase of C20:4, C20:5 was detected in J and Ch, and the concentration of C22:6 was highest in group J (+0.019 %; P < 0.001).

scholarly journals Бактеріальні показники продуктів забою курчат-бройлерів у разі збагачення раціону наномікроелементною кормовою добавкою «Мікростимулін» в аспекті ветеринарно-санітарної експертизи

2015 ◽  
pp. 93-99
Author(s):  
І. В. Яценко ◽  
В. М. Кириченко
Keyword(s):  
Broiler Chickens ◽  
Broiler Chicken ◽  
Bacterial Contamination ◽  
Feed Additive ◽  
Control Group ◽  
Pathogenic Microorganisms ◽  
Not Given ◽  
Number Of Microorganisms ◽  
Experimental Group

Проаналізовано бактеріальну контамінацію умовно-патогенними та патогенними мікроорганізмамипродуктів забою курчат-бройлерів (білі і червонім’язи, серце, печінка, м’язова частина шлунку) в разізбагачення раціону наномікроелементною кормовоюдобавкою (НМКД) «Мікростимулін» протягом чоти-рьох діб зберігання за температури 0–4 оС. Встанов-лено, що найменший рівень МАФАнМ, БГКП, бакте-рій роду Proteus реєструвався в 3-й дослідній групі,курчатам-бройлерам якої задавали з водою 20 см3/дм3НМКД «Мікростимулін» у всіх досліджуваних продук-тах забою. Найбільший рівень МАФАнМ, БГКП, бак-терій роду Proteus реєструвався в контрольній групі,курчатам-бройлерам якої не задавали НМКД «Мікро-стимулін» з водою. Доведено залежність між дозоюНМКД «Мікростимулін» і кількістю мікроорганізміву продуктах забою птиці. The bacterial contamination of broiler chicken slaughter products (white and red muscles, heart, liver, muscular stomach) by conditionally pathogenic and pathogenic microorganisms when the ration of the chickens was enriched by nanomicroelement feed additive (NMFA) «Microstimulin» for four days of storage at 0–4 ºC has been analyzed. It has been found out that the lowest level of MAFAnM, BGIR, bacteria Proteus in all slaughter products under investigation was registered in the 3rd experimental group the broiler chickens of which were given 20 cm³/dm³ NMFA «Microstimulin» with water. The highest level of MAFAnM, BGIR, bacteria Proteus was registered in the control group the broiler chickens which were not given NMFA «Microstimulin» with water. The dependence between the dose of NMFA «Microstimulin» and the number of microorganisms in the products of slaughtering has been proved.

scholarly journals Effect of Using Different Rations in Nutrition of High-Productive Cows on Milk Quantity and Quality

2015 ◽  
Vol 15 (2) ◽  
pp. 185
Author(s):  
Goce Cilev ◽  
Živko Gacovski ◽  
Biljana Petrovska ◽  
Jovan Stojković
Keyword(s):  
Chemical Composition ◽  
Milk Production ◽  
Milk Fat ◽  
Dry Matter ◽  
Control Group ◽  
Daily Production ◽  
Group I ◽  
Production Increase ◽  
High Level ◽  
Experimental Group

This paper shows the results of production and chemical compo­sition of cow’s milk on a farm MILKO-HF, Prilep, R. Macedonia with capacity of 100 cows of Holstein-Frisian breed divided into two groups (control and experimental). In control group I which was fed in a standard way of nutrition (ration used on the farm), average daily production of milk per cow ws 22.49 kg with the following chemical composition of milk: average daily content of milk fat is 3.75%, protein 3.57%, lactose 4.65%, nonfat dry matter 9.56% and total dry matter 13.31%. In experimental group II which were fed with the ration according to normatives, average daily production of milk per cow is 24.04 kg with the following chemical composition of milk: average daily content of milk fat is 3.99%, protein 3.57%, lactose 4.65%, non-fat dry matter 9.58% and total dry matter 13.57%. The obtained results show the increase in milk production for 1.55 kg-6.89% and better chemical composition of milk in the experimental group of cows. Thus, dry matter was increased from 13.31% to 13.57%-1.95%, milk fat content from 3.75% to 3.99%-6.4%, nonfat dry matter from 9.56% to 9.58%-0.21%, while the content of protein and lactose stayed on equal level. It was determined that the normed nutrition has influenced on production increase and better chemical composition of milk without unnecessary spent high level of nutrient i.e. nutrition of cows according to recommended normative.

scholarly journals Effects of Saccharomyces cerevisiae Addition in Dairy Cows Diets

2021 ◽  
Vol 78 (1) ◽  
pp. 18
Author(s):  
Marinela ENCULESCU
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Health Status ◽  
Dairy Cows ◽  
Milk Yield ◽  
Milk Fat ◽  
Control Group ◽  
Free Access ◽  
Alternative Source ◽  
Effective Measure ◽  
Experimental Group

The aim of this study was to evaluate the effects of fresh yeast (Saccharomyces cerevisiae) supplementation in the dairy cows’ diets on productive performances and health status. The study was carried out in the experimental farm of the Research and Development Institute for Bovine Balotești on 50 multiparous Romanian Black and Spotted dairy cows, randomly divided into two groups (N = 25 heads/group), according to age, milk yield, body weight and health status. The experimental group received 80 g Saccharomyces cerevisiae/head/day for one year. The groups were fed with the same diet and had free access to water and salt. Results were expressed as a mean (±Standard Deviation). The t-test was applied to obtain the significance of difference. Supplementation of the diet with Saccharomyces cerevisiae had a significant effect (P <0.001) on milk yield (20.71±1.65 l/head/day) for the experimental group comparing with the control group (18.22±1.81 l/head/day), and on milk protein and lactose (P <0.05). The addition of Saccharomyces cerevisiae in dairy cows’ diet did not improve the milk fat, hematological and biochemical/urine indicators in the experimental group (P >0.05). However, for alkaline phosphatase, differences at the end of the study have been observed (P <0.01). The beneficial effect of the yeast and yeast products in ruminants could be attributed to microbial activity by increasing the number of beneficial bacteria in the rumen of the animals. The use of Saccharomyces cerevisiae as an alternative source of economic protein, vitamins and minerals in dairy cows’ diet represents an effective measure to optimize animal productivity.

Comparative effectiveness of the use of wet flattened corn grain in the rations of lactating cows

2021 ◽  
pp. 25-32
Author(s):  
K. V. Kireeva ◽  
I. A. Pushkaryev ◽  
N. M. Kostomakhin ◽  
T. A. Litvintseva
Keyword(s):  
Milk Yield ◽  
Practical Interest ◽  
The Body ◽  
Control Group ◽  
Lactating Cows ◽  
Daily Milk Yield ◽  
Experimental Group ◽  
Corn Grain ◽  
Corn Grains ◽  
Daily Milk

In order to effectively provide the body of cows with energy during the increasing the milk yield without the risk of acidosis, progressive animal breeders of the Altai Territory include wet flattened corn grain in the composition of concentrated feed. The question of the expediency and economic effectiveness of using wet flattened corn grain for cows of various physiological groups – first-calf heifers and mature animals continues to be debatable. Therefore, a comparative assessment of two options for feeding wet flattened corn grain to cows under the conditions of the Altai Territory is considered promising in modern animal husbandry and is of great practical interest. The purpose of the work was to identify the optimal and economically feasible option for using wet flattened corn grain in the rations of lactating cows. When using wet flattened corn grains in an amount of 7,1 % of the nutritional value of the ration the first-calf heifers during the period of increasing the milk yield, productivity has increased by 20,9 %. The average daily milk yield was 17,3 kg, which significantly exceeded the indicator of the control group (P > 0,95). The inclusion of wet flattened corn grains in the ration of mature cows in the amount of 1 kg for 30–35 days before calving, then 4,5 kg from 15 to 75 days after calving allows us to get the average daily milk yield of 30 kg or 20,3 % higher than that of the control group of herdmates (P > 0,95). The effectiveness of the use of wet flattened corn grain had significant indicators: the total profit from the sale of dairy products of the first-calf heifers of the experimental group amounted to 16 251,3 rubles/head, and from the sale of milk of mature cows of the experimental group it was 30 346,43 rubles/head.

scholarly journals Forest resources of the Krasnoyarsk region in feeding cows

2019 ◽  
pp. 45-49 ◽  
Author(s):  
V. A. Tereshchenko ◽  
E. A. Ivanov ◽  
O. V. Ivanova ◽  
G. V. Permyakova ◽  
A. V. Semenovich
Keyword(s):  
Milk Fat ◽  
Positive Influence ◽  
Forest Resources ◽  
Cow Milk ◽  
Effective Dosage ◽  
Control Group ◽  
Optimal Dosage ◽  
Technological Properties ◽  
Milk Productivity ◽  
Experimental Group

An important factor in increasing the productivity of dairy cattle is to ensure the full value of diets by improving the quality of feeds and enriching its with a complex of additives from alternative sources, in particular from the richest forest resources. Scientific-economically experience by studying the effect of feeding coniferous flour on milk productivity and metabolic parameters of cows and determining its optimal dosage was carried out in the conditions of LLC Plemzavod Tayozhny Sukhobuzimsky district of the Krasnoyarsk territory. Three groups of milking cows (control and two experimental) of the Black-Motley breed of the second calving, 5 heads in each group were formed for the experiment on the principle of analogues. The duration of the experiment was 100 days. According to the scheme of studies, the control group received the main diet, the 1st experimental group in addition to the main diet received coniferous flour at a dosage of 50 g/head/day, the 2nd experimental group coniferous flour at a dosage of 100 g/head/day. Research and data processing were carried out according to generally accepted methods. As a result of researches positive influence of coniferous flour on milk productivity and technological properties of cow milk was established. The analysis of the obtained data allowed to determine the most effective dosage of coniferous flour for the diet of cows 50 g/head/day, which contributed to an increase in milk yield for 100 days of lactation by 15.6%, the milk fat amount by 29.8%, the milk protein amount by 17.1%, milk of basic fat content by 29.4%, improvement technological properties of milk.

Sign in / Sign up

Export Citation Format

Share Document