Influence of new feeding technology of milk dromedary camels on their dairy productivityBaimukanov, A B; Semenov, V G; Alibayev, N N; Ermakhanov, M N; Abuov, G
doi: 10.1088/1755-1315/935/1/012020pmid: N/A
The research aims to determine the influence of the new technology of feeding dromedary female camels on their dairy productivity. Milk camels of the I control group were kept in conditions of pasture with supplementary feeding of 3 kg of wheat bran, milk camels of the II experimental group, in addition to the main diet - pasture forage, received additional feeding with 3 kg of concentrated feed, consisting (wt.%): a mixture of grain waste - 50, cotton husk - 10, wheat - 25 and barley - 15 with a total nutritional value of 1.0 feed units, 9.46 megajoule of metabolizable energy and 90.5 g of digestible protein. Studies have shown that the dairy productivity of experimental groups of milk female camels gradually increases from the beginning of the lactation period. For 12 months of the lactation period, the dairy productivity of dairy camels in the control group was 2995.3 liters, in the II experimental group - 3236.2 liters in the III experimental group - 3467.9 liters. The average fat content of camel milk from sucking dromedary female camels, depending on the level of feeding, averages 4.22-4.39%.
Effect of heating of frozen colostrum in two-resonator installationNovikova, G; Ershova, I; Prosviryakova, M; Mikhailova, O; Storchevoy, V; Larionov, G; Samarin, G; Kuleshova, L; Poruchikov, D; Andreev, L
doi: 10.1088/1755-1315/935/1/012026pmid: N/A
The study is aimed at the effect substantiation of voluminous heating of the cattle frozen colostrum in the two-resonator installation. The methodology is based on the theory of the electromagnetic field, the laws of thermodynamics and the results of physical modeling. The colostrum dielectric parameters were analyzed in the temperature range from -12 °C to +40 °C. The theoretical studies were carried out for changes finding out in the absorption coefficient of the electromagnetic field and the penetration depth of the electromagnetic waves 12.24 cm long during defrosting/heating of the cow colostrum with the fat content of 6.4%. It is found that the penetration depth of the electromagnetic field into the frozen raw material at negative temperatures range (0.2-1.0 cm) is less than that at the colostrum positive temperatures (1.0-2.17 cm). With such significant difference in the dielectric characteristics of the frozen and thawed colostrum and in their penetration depths of the ultra high frequency electromagnetic field, the rate of their heating is considerably different. The developed continuous-flow ultra high frequency electromagnetic generator contains two voluminous resonators. They provide the colostrum being in different physical states with different doses of the ultra high frequency electromagnetic field exposure.
The effect of an antioxidant on the hematological profile of birdsKuzmina, N N; Yu Petrov, O; Semenov, V G; Boronin, V V
doi: 10.1088/1755-1315/935/1/012015pmid: N/A
The research is devoted to the study of the influence of the modern antioxidant of the flavonoid group ‘Dihydroquercetin’ as part of the feed combination on the hematological profile and biochemical parameters of the blood of broiler chickens of the KOBB-500 cross. The content of hemoglobin and erythrocytes in the blood of broilers receiving dihydroquercetin increased, which indicates an increase in the intensity of redox processes in the body. The number of leukocytes in all groups was normal, but in the experimental groups their decrease was noted, which indicates the therapeutic and immunostimulating effect of the drug. Evaluation of protein metabolism by the content of total protein and the fraction of albumin in the blood serum showed its positive dynamics within the normal physiological values, which characterizes an increase in the intensity of assimilation processes in the bird’s body. The metabolism of carbohydrates was assessed by the content of glucose in it, and a decrease in its level indicates its increased consumption as an energy component for metabolic processes associated with intensive growth of chickens. An increase in the activity of alkaline phosphatase by 1.3-1.8 times is associated with the active growth of chickens.
Use of activated charcoal feed supplement in diets of pigsLavrentyev, A; Sherne, V; Semenov, V; Zhestyanova, L; Mikhaylova, L
doi: 10.1088/1755-1315/935/1/012013pmid: N/A
Pig farming is one of the most important and strategically valuable sub-branches of animal husbandry for ensuring food security of Russia and its regions as the special role of meat and meat products is determined with their significance as the main source of proteins of animal origin in human sensible nutrition. The novelty of the work is the use of an active coal feed additive as part of the diets of experimental piglets for growth and development and meat productivity during cultivation and fattening. Effective pig farming suggests use of high-quality feeds meeting requirements of presence of nutritional components and absence or minimum content of harmful and toxic substances. The conducted studies prove that the dose of activated charcoal feed supplement in the amount of 0.050 g/kg of live weight gives the highest results.
Development of the technology of production of cheese ‘Suluguni’ for farmsLarionov, G; Kayukovab, O; Semenov, V
doi: 10.1088/1755-1315/935/1/012047pmid: N/A
The aim of the research is the development of a technology for the production of ‘Suluguni’ cheese for farms from milk of cows. Investigations of the chemical composition and physicochemical properties of cows’ milk were carried out using by ultrasonic method. It was found that the mass fraction of protein in milk is 3.19±0.02%, fat is from 4.32±0.06% to 5.07±0.08%. For the production of cheese, milk was standardized. The protein content in normalized milk is 3.37±0.02%, fat - 2.84±0.03%. The ratio of the mass fraction of protein and fat in normalized milk was 1.00:1.19. It was found that the milk of cows meets the requirements for raw materials for the production of cheese. We have developed a technology for the production of brine cheese ‘Suluguni’, which consists of the following operations: receiving milk, preparing milk for making cheese, fermenting, curdling and processing the curd, setting grain, drying, cheddaring, melting, forming a cheese head, salting, storing, transportation and sale of products. Cheese meets the requirements for organoleptic, physicochemical and microbiological indicators. The research results make it possible to recommend to farms the technology for the production of ‘Suluguni’ cheese with cheddaring and thermomechanical processing of the cheese mass.
Silicon-based natural zeolites in feeding store pigsYu Lavrentev, A; Evdokimov, N V; Larionov, G A; Yu Nemtseva, E; Mikhaylova, L R; Zhestyanova, L V; Sherne, V S
doi: 10.1088/1755-1315/935/1/012019pmid: N/A
To realize the genetic potential of pig productivity and balance diets, it is perhaps to use various additives, including silicon-containing zeolite trepel. The novelty of the work - the use of zeolite in feeding as a preventive and therapeutic additive allows you to increase productivity and reduce the cost of feed and feed costs compared to similar additives. For the experiment, 4 recipes of mixed feeds were developed: one without the content of zeolite trepel and 3 with 3, 4, 5% of this additive. It is proved that the best dose of this drug is 3% of the mass of feed. It was found that the body weight gain in II group increased by 13.5%, in III group by 7.2%, and in IV group decreased by 4.41% compared to the control group. The addition of silicon-containing zeolite in the II and III experimental groups did not affect the consumption of mixed feed, and in the IV experimental group, a decrease in the consumption of mixed feed was observed. Feed consumption in the I, III and IV experimental groups decreased by 12.1%, 6.7% and 0.3%.
Mathematical model of colostrum defrosting in super-high-frequency generator equippedErshova, I; Prosviryakova, M; Mikhailova, O; Novikova, G; Samarin, G; Poruchikov, D; Storchevoy, V
doi: 10.1088/1755-1315/935/1/012027pmid: N/A
The paper is devoted to development and parameters studying of two-resonator super-high-frequency (SHF) generator based on continuous flow principle of action. It is equipped with two quasi-stationary toroidal resonators; so it allows to separate such processes of cattle colostral milk treatnent as defrosting and heating and thus to ensure both the electromagnetic safety and the high electric field strength. In order to improve efficiency of the cattle colostrum defrosting/heating performed by its exposure to the super-high frequency electromagnetic field, the methodology was developed for the SHF generator designing. It includes, firstly, development & studying of mathematical models based on due consideration of the phase transitions and, secondly, the structural designing of the SHF generator working chamber with examination of its effective operating modes. The mathematical model is proposed of the electromagnetic waves interaction with the raw material (colostral milk) being in different physical states. With aid of the electric field strength control (by the generators power changing) and the gap adjustment in the capacitor part of the resonators (by smooth movement of the common perforated base), it is possible to achieve the equipment capacity up to 170… 200 L/h. The energy expenses are 0.025 (kWh)/kg.
Determination of the effective operating hours of the intermittent lighting system for growing vegetablesKondrateva, N; Filatov, D; Bolshin, R; Krasnolutskaya, M; Shishov, A; Ovchukova, S; Mikheev, G
doi: 10.1088/1755-1315/935/1/012004pmid: N/A
Around the world, one of the key challenges is the provision of food for a growing urbanized population. A vertical farming system will help solve this problem. Vertical farming in a controlled environment provides 4-6 times higher yields per unit area, but requires more electricity. The most economical light sources are light-emitting diodes but it is important to determine the rational operating mode of the lighting system. The aim of the study was to determine the specific operating hours of the intermittent lighting system to reduce the cost of electricity consumption when growing vegetables in vertical farming in a controlled environment. Continuous and periodic modes of operation of the lighting system with a total operating time of 16 hours per day were considered. In Russia, there are six price categories for consumed electricity. Research has shown that price level II is economically viable. and a rational operating mode: 8 hours of light/4 hours of darkness, etc. Thus, the intervals of operation of the lighting system are 11.00-19.00 and 23.00-7.00. The study of this regime for microgreening of Mitsun head cabbage showed that the productivity of the plants was preserved, since the length of the leaves did not change.
Dairy productivity of Kazakh horse maresBaimukanov, D A; Semenov, V G; Aubakirov, Kh A; Zh Iskhan, K; Kargayeva, M T; Baimukanov, A D
doi: 10.1088/1755-1315/935/1/012018pmid: N/A
The work aimed to establish the influence of udder parameters of Kazakh mares on their formation of dairy productivity and the growth rate of foals during the milk period. The cup-shaped udder is characterized by a large base (the udder circumference at the base is 70.3 cm), the symmetrical arrangement of both udder lobes, with well-developed cylindrical nipples, the nipples are widely spaced between the two lobes. The round shaped udder is instead characterized by conical and short nipples and a smaller udder volume. For four months of lactation, 1051 liters of commercial milk were produced from mares with cup-shaped udder, while 823.6 liters- with round-shaped udder.The observation results showed that foals from mares with the cup-shaped and round - shapedudders on the first day of life were 39.8 and 39.6 kg of live weight, respectively, then after a month, it doubles, reaching 82.5 and 79.5 kg. The highest indicators of absolute gain - 42.7 kg, average daily gain - 1.42 kg, and relative gain -107.3% were observed in offspring with a cup-shaped udder. In foals delivered from mares with a round-shaped udder, the gain rates (39.9; 1.33 kg and 100.7%, respectively) were slightly lower.
Use of Holstein bulls in improvement of black pied cattleIgnatieva, N L; Voronova, I V; Yu Nemtseva, E; Toboev, G M
doi: 10.1088/1755-1315/935/1/012025pmid: N/A
Sires play an important role in improvement of productive qualities of bred livestock. Most researchers and breeders estimate their impact to be at least 90%. In order to evaluate the results of using different Holstein breeding bulls, we compared the productivity of their offspring with the average values for all bulls. The following methods of variation statistics were used: observation, data grouping, and correlation analysis. It was found that the best are the descendants of the bull Estuary 2186 of the Montwick Chieftain line. Besides, Liman 2186 bull’s daughters excelled in high milk fat content - 4.46%. Daughters of Punch 2748 bull of Pabst Governor line were the best in protein content of milk (3.27%). Daughters of Liman 2186 bull had the highest fat and protein yield during 305 days of lactation. It was established that the direction and value of correlation between the main features of milk yield of cows of different lineages have a rather high degree of variation. Presence of positive genetic correlation between milk yield and protein content in milk in some lines of animals enables breeding cows by two traits simultaneously (milk yield and protein content in milk).