Average Daily Increase Research Articles

Decreases in daily ambulation forecast post-surgical re-admission

BackgroundSurgical readmissions are clinically and financially problematic. Our purpose is to determine if a decrease in postoperative ambulation (steps/day) is associated with hospital readmission. MethodsIn this prospective cohort study, patients undergoing elective operations wore an accelerometer activity tracker to measure steps/day for 28 consecutive postoperative days. The primary outcome was hospital readmission. The change in steps/day over two consecutive days prior to the day of the readmission were examined. Predetermined thresholds for decreases of consecutive daily ambulation levels were used to calculate sensitivity and specificity for the outcome of hospital readmission. Results215 patients (aged 63 ± 12 years) were included. Readmission occurred in 10% (n = 21). For each of the first 28-postoperative days, the entire cohort had an average daily step increase of 136 ± 146 steps/day (Spearman correlation rho = 0.990; p < 0.001). A decrease in steps for two consecutive days of >50% from the prior day had a 79% sensitivity and 90% specificity for hospital readmission. ConclusionsA decrease of >50% daily ambulation (steps/day) over two consecutive post-discharge days accurately forecasts hospital readmission. The implications of these findings are that monitoring daily ambulation could serve as a form of outpatient telemetry aiding to forecast post-surgical readmissions.

Short-Term Bone Healing Response to Mechanical Stimulation-A Case Series Conducted on Sheep.

It is well known that mechanical stimulation promotes indirect fracture healing by triggering callus formation. We investigated the short-term response of healing tissue to mechanical stimulation to compare the changes in tissue stiffness during stimulation and resting phases in a preclinical case-series. Four sheep underwent a tibial osteotomy and were instrumented with a custom-made active fixator which applied a mechanical stimulation protocol of 1000 cycles/day, equally distributed over 12 h, followed by 12 h of rest. During each cycle, a surrogate metric for tissue stiffness was measured, enabling a continuous real-time monitoring of the healing progression. A daily stiffness increase during stimulation and an increase during resting were evaluated for each animal. One animal had to be excluded from the evaluation due to technical reasons. For all included animals, the stiffness began to increase within the second week post-op. A characteristic pattern was observed during daily measurements: the stiffness dropped considerably within the first stimulation cycles followed by a steady rise throughout the rest of the stimulation phase. However, for all included animals, the average daily stiffness increase within the first three weeks post operation was larger during resting than during stimulation (Sheep I: 16.9% vs. −5.7%; Sheep II: 14.7% vs. −1.8%; Sheep III: 8.9% vs. 1.6%). A continuous measurement of tissue stiffness together with a controlled fracture stimulation enabled the investigation of the short-term effects of specific stimulatory parameters, such as resting periods. Resting was identified as a potentially determining factor for bone healing progression. Optimizing the ratio between stimulation and resting may contribute to more robust fracture healing in the future.

Evaluation Yorkshire and Landrace breeds of pigs according to &lt;i&gt;PRKAG3&lt;/i&gt;, &lt;i&gt;MC4R&lt;/i&gt; and &lt;i&gt;MYOD1&lt;/i&gt; marker genes

Purpose: evaluation of pigs Yorkshire rocks and Landraz onPRKAG3, MC4RandMyOD1markers.Materials and methods. The paper presents the analysis of the results of genetic testing, and determines the frequency of alleles and genotypes of Yorkshire and Landrace breeds at the State Enterprise ZhodinoAgroPlemElita" of the Minsk region of the Republic of Belarus by the genes-markers of productive traits:PRKAG3, MC4RandMYOD1. Zootechnical and molecular genetic methods were used in the research (PCR/PDRF). Snapshot analysis was developed for the genotyping of pigs to detect polymorphic markers of meat-feeding productivity of pigs on the GenasPRKAG3, MyOD1, MC4R. At the first stage, there was an assessment of tribal young (173 heads) on its own productivity in terms of indicators: the age of achieving the living mass of 100 kg, the average daily increase (d) from birth to the live weight of 100 kg, the length of the body (cm), the lifetime meat quality of the thickness of the scrape (mm), height of the longest back muscles (mm), the content of meat in the body (%). At the second stage of the research, the controlling fastenings of 200 goals of pigs and evaluation of feedst and meat qualities in the following indicators were carried out: the age of achieving a living mass of 100 kg (days), the average daily increase (d), feed consumption per 1 kg of growth (to. Units). Also determined: the length of the carcass (cm), the slaughter output (%), the thickness of the spick over 6-7 breast vertebrae (mm), the area of "muscular eye" (cm2), the mass of the rear third of the half carcass (kg), the flow of meat in the carcus (%). Then, genetic studies were compared with productivity indicators.Results. As a result of the research, it was found that in the tested animals, the frequency of the preferred allele I-PRKAG3made 0.171-0.288, A-MC4R– 0.243-0.315, and C-MYOD1– 0.064-0.477, respectively. The developed comprehensive system for assessing the breeding value of Yorkshire and Landrace pigs based on the marker genesPRKAG3, MC4R, andMYOD1allowed us to identify the preferred alleles and determine correlation with productivity traits that provided increase in the average population values: for self-productivity - by 2-4%, for fattening traits - by 2.7-12.5%, for meat traits - by 2.8-34.4 %.Conclusion. The use of integrated system in pig breeding will speed up the selection work to increase the indicators of fattening and meat productivity of the created breeding herds of Yorkshire and Landrace pigs.

Повышение эффективности выращивания телят в послемолочный период

Aim. To establish the effect of raising young cattle on whole milk, a substitute for whole and skimmed milk powder on its productivity and physiological state in the post-dairy period. Materials and Methods. The studies were conducted on three groups of young cattle of the first phase of cultivation, 10 heads each, at the age of 115 days with an initial live weight of 125.3-127.5 kg. Animals of all groups were given the same diet. During the dairy period, the calves of the control group received milk, a second and third substitute for whole milk and a substitute for skimmed milk powder. Classical and modern zootechnical, biochemical and mathematical methods of analysis were used in research. The digital material obtained in the course of the research was processed by the method of variation statistics, taking into account the Student's criterion of reliability and using the Microsoft Excel software package. Results. Taking into account the feed consumption in the scientific and economic experience showed that the consumption of silage-haylage mixture increased by 0.5-0.6 kg in the animals of the experimental groups. 1 kg of dry matter contained 10.47-10.56 MJ of exchange energy and 0.90-0.91 feed units, 13.4% of crude protein and 22.4-23.2% of fiber. Per 1 feed unit, 95.7-96.4 g of digestible protein was accounted for. As a result of the research, it was found that the majority of the blood parameters studied by us, reflecting the general physiological state of the body, in the compared groups were within the physiological norm. In the blood of animals of the II and III experimental groups, compared with control animals, there was an increase in the number of red blood cells by 10.0 and 9.8%, hemoglobin – by 5.8 and 3.9%, glucose – by 11.0 and 9.5%. The study of the growth dynamics of experimental animals during the experimental period of scientific and economic experience showed that the increase in the live weight of young animals of the experimental group was more intense than the control ones. At the same time, the average daily increase in live weight of control calves was 796.7 g, experimental calves-870.0 and 881.7 g, or increased by 9.2 and 10.7%. The increase in the growth energy of the bulls of the experimental group allowed to obtain an additional 4.4 and 5.1 kg of live weight per head during the experiment period. Based on the conducted studies, it was found that the cost of feed per kg of growth in the II and III experimental groups was lower than the control variant by 5.8 and 7.6%, and therefore the cost of growth in the experimental groups decreased by 6.1 and 7.7% compared to the control analogues, this allowed us to get additional profit per 1 head in the experimental groups in the amount of 8.35 and 10.58 rubles for the research period. Conclusion. The use of ZTSM and ZSOM in feeding young cattle at the age of 10-115 days provided an increase in the average daily increase in the post – dairy period by 9.2 and 10.7%, while reducing the cost of feed for obtaining an increase by 5.8 and 7.6%, the cost of growth-by 6.1 and 7.7 percent.

EFFECT OF CHLORELLA MICROHYDROGEN SUSPENSION ON PRODUCTIVITY AND GROWTH INTENSITY OF LAMBS

The work was performed in Rozdilnyanske LLC of Rozdilnyansky district of Odessa region. For research, 5 groups of suckling ewes of the Gypsy breed were formed with 10 heads each, one of the groups was a control. Groups were formed by the method of analogue groups taking into account the breed, age in lambs, live weight, which was 50 kg. Chlorella microalgae suspension was fed to ewes in the first 20 days of lactation, in the amount of 3; 5; 7; 9 ml per 1 kg of live weight. Growth intensity, external parameters, and hematological and biochemical composition of blood were determined in newborn lambs at the age of 20 days according to generally accepted methods. It was found that feeding a suspension of chlorella microalgae to lactating ewes at the rate of 3, 5, 7, 9 ml per 1 kg of live weight increases milk productivity by 2.6-4.4 times and live weight of the offspring by 58.8-96.9%, compared to ewes that did not use chlorella microalgae suspension. With an increase in the amount of chlorella microalgae suspension in the diet of lactating ewes, the absolute increase in live weight of their offspring increases by 2.4-4.5 times. The average daily increase in live weight of lambs ranged from 199 g to 339.5 g

АКТИВИЗАЦИЯ АДАПТОГЕНЕЗА И СТИМУЛЯЦИЯ РОСТА ПОРОСЯТ-ОТЪЕМЫШЕЙ ИММУНОПРОФИЛАКТИКОЙ ТРАНСПОРТНОГО СТРЕССА

The purpose of this work is to realize the adaptive and productive potential of pigs with immunoprophylaxis of transport stress. Analysis of the morbidity and preservation of young pigs for the periods of growth and fattening found that immunotropic preparations PigStim-C and PigStim-M reduce morbidity, reduce recovery time and increase the effectiveness of therapeutic measures. Against the background of immunoprophylaxis, the incidence of pigs during the growth and fattening periods decreased by 4-5 %, the recovery time was reduced by 0.9-1.7 days, and the safety of pigs increased to 99 %, at 97 % in the control group. A more pronounced positive effect of the application of PigStim-C to diseases characterized by respiratory damage was revealed, and PigStim-M – the gastrointestinal tract. Prevention of transport stress by immunotropic preparations PigStim-C and PigStim-M contributed to an increase in live weight of pigs at the end of the growth period by 1.61 and 1.23 kg, respectively, more than control values, and by the end of the fattening period by 2.55 and 3.17 kg. A similar pattern was revealed in the dynamics of average daily increases in live mass. The average daily increases in the live weight of piglets against the background of the use of preparations of the PigStim series during the growth period were higher by 24.6-32.3 g, during the fattening period by 9.4-19.4 g, and on average for the growth and fattening periods by 17.0-21.2 g.

Оценка качества мясного птицеводческого сырья при использовании минерального адаптогена

Abstract. The article presents the results of a comprehensive study on the effect of feed mineral additives on meat products in poultry farming. The purpose of the work is to analyze the effects of mineral adaptogen on the quality of meat and poultry products. Research methods. Research and production experience was carried out using generally accepted zootechnical, pathomorphological, histological, veterinary-sanitary and statistical research methods. Results of the study. The causes of bird death and pathological changes in organs and tissues during autopsy in the experimental and control groups are described. Describes the results of studies of veterinary-sanitary expertise of meat quality when conducting organoleptic evaluation of carcasses and offal, this sub-microscopic features of striated skeletal and cardiac muscle, studied the microstructure of cartilage in the femoral head and the microarchitecture of the liver as the main organ of metabolism and by-product. During histological studies, the structure of cells and tissues, when using mineral adaptogen, was more morphologically mature and was in a functionally active state, and in the control group, dystrophic and necrotic processes and areas with immature muscle fibers were observed. When comparing the lifetime indicators for increasing the live weight of broilers when feeding mineral adaptogen, the average daily weight gain increases, which is associated with a decrease in the toxic load and due to the receipt of micro- and macronutrients necessary for the growth and development of poultry. The safety of broiler livestock and the slaughter yield of meat increases. Minerals contribute to the proper development of the musculoskeletal system and the formation of cartilage tissue, which affects the quality of fattening, the bird can move and consume food. during the veterinary and sanitary assessment of meat quality, the results confirming the high quality of meat products were also obtained. Scientific novelty. For the first time, the paper shows not only the effect on the clinical state of poultry during the fattening of Arbor Acres broilers, the safety of livestock, but also on the microstructure and maturity of meat and offal during the slaughter period.

Study of fine tapping potential of poor reservoirs in late stage of high water cut

At present, the oilfield development has entered the late stage of high water cut, and the exploitation objects have been changed to the second and third types of oil layers. The distribution of remaining oil is highly fragmented and complex, and the exploitation difficulty is gradually increasing. In view of a series of geological characteristics of Development Zone A, such as “numerous layers, complex reservoirs, severe phase transition and high viscosity”, the potential tapping technologies of Class II and Class III reservoirs, such as combination of two and three and ASP flooding, have been carried out one after another. In order to further enhance oil recovery and increase recoverable reserves, a large number of fracturing measures have been implemented to increase oil production. In view of the fact that it is more and more difficult to select wells and layers by this measure, we combine the results of fine reservoir description with dynamic data, take Block B as the investigation object, establish the potential pool of sedimentary unit-level measures, recognize the potential distribution of 82 different sedimentary units, clarify the target units of potential tapping measures, and finally explore relatively perfect ways and means to optimize fracturing well layers, and strive to achieve targeted adjustment and accurately tap potential. At present, in the early stage of fracturing in this area, the average daily oil increase of a single well is 7.9 tons, and the above practices also provide empirical reference and guidance for other similar blocks.

Growth parameters and living weight of the geese of diferent genotypes

The article presents the results of determining the parameters of growth intensity in the geese of different genotypes in the process of creating a dimorphic population. It was found that in the geese of the Rhine and Large Gray breeds, dimorphic population, high rates of formation intensity were determined during the first three weeks of life, slightly lower – in the offspring of F1-F3. For the value of this criterion, a tendency to increase from the descendants of F1 to dimorphic geese. In most cases, the bird of the original breed was characterized by a higher growth rate than the hybrids. The highest values of the growth uniformity index are characteristic of Large Gray geese, which indicates a better gradual uniform development of their internal organs and systems compared to birds of other studied groups. F1 hybrid geese, having a high live weight at 9 weeks of age, were characterized by a higher value of growth uniformity. Dimorphic geese in this parameter predominated only in F2 hybrids. The growth uniformity index shows a high correlation with live weight of the geese at 9 weeks of age (r = 0.6518). This indicates that with its use it is possible with a high probability to predict the further live weight of the bird. High rates of absolute and relative growth and the index of uniformity of growth contribute to the formation of high live weight in geese of Large Gray breed in the early ontogenesis. This indicates their moderate type of growth, ie obtained close indicators of relative growth in adjacent age periods. The maximum values of the growth stress index were determined in poultry of the original breeds, which indicates a more uniform intense growth of young animals. The geese of the created dimorphic population, which outnumbered the descendants of the first-third generation, were also characterized by relatively high values of this indicator. The growth stress index shows a close correlation with the indicators of the intensity of formation (r = 0.9559). A negative correlation was established between the growth stress index and the value of the relative growth – r = -0.4033. With an increase in the growth stress index, an increase in the value of the average daily increase (r = 0.6934) is expected.

EFFICIENCY OF USING IN FEEDING CALVES VETCH-OAT SILAGE PREPARED WITH PROBIOTICS

The results of the study of the effectiveness of new probiotic preparations based on strains of probiotic microorganisms in the preparation of silage from cereal-legume mixtures of annual forage crops with high humidity and their impact on the interior performance and productivity of fattening calves.&#x0D; in production conditions, two variants of vetch-oat silage were preserved, the control one was fermented with BPS-L leaven at a dose of 10 ml per tone, and the experimental one was preserved with probiotic preparation KT-L 18/1 at a dose of 8 ml per tone of green mass. Both preparations are domestically produced, created in the laboratory of probiotics of the Institute of Agriculture Microbiology and Agro-Industrial Manufacture of NAAS.&#x0D; A study of the chemical composition and nutritional value of silos showed that the addition of probiotic preparations BPS-L and KT-L 18/1 to the green mass by ensiling annual forage crops with high humidity (78-80%) contributes to the preservation of dry matter at 91-94, crude protein 90-93 and carotene 85-88%, provides the optimal level of lactic acid fermentation, accumulation of lactic acid at the level of 67-69%, acetic - 29-32% without accumulation butyric acid. Based on data on chemical composition, fermentation acid content and organoleptic evaluation, such silos were classified as quality class 1.&#x0D; Studies on animals (calves for fattening) lasted 140 days in the experimental farm "Obroshyne" Pustomyty district of Lviv region. The main diet of both groups consisted of cereal-legume hay, winter wheat straw, pulp and feed. Animals of the control group received an additional 15 kg of silage prepared with BPS-L, and experimental - 14.5 kg of silage with the KT-L 18/1.&#x0D; In the rumen fluid calves were fed silage harvested with drug KT-L 18/1 noted the increase in the concentration of nitrogen free amino acids and protein nitrogen in the background reduction of ammonia.&#x0D; Established tendency to increase the level of red blood cells and hemoglobin content of calves in the experimental group.&#x0D; Analysis of serum protein spectrum showed a significant increase in the level of albumin and γ-globulin fractions in animals that consumed silage prepared with the KT-L 18/1.&#x0D; Average daily live weight increase of calves in experimental group were 703 g, its 4.2% higher than in controls (675 g).

Growing sterlet fingerlings (Asirepseg ruthenus L.) and their albinos in a closed-loop water supply system using feed of different nutritional values

When growing fish in conditions of intensive technologies for normal growth and development, the main task is to provide them with a balanced full-fledged food. Currently, the most widely used in industrial fish farming are granulated mixed feeds of various formulations that fully meet the needs of the farmed fish. The objects of the study were the same-age sterlet fingerlings of ordinary color with an initial weight of 112–132 g and albino sterlet fingerlings weighing 99–105 g. We used mixed feeds from two manufacturers Aquarex (Russia) and Le Gouessant, which differ in fat content. Manual feeding. The temperature range is 21–23 °C. When feeding young sterlets of the usual color with the Aquarex compound feed, the average daily increase was 1.93 g, and when feeding with the Le Gouessant compound feed — 2.76 g, which is 43.0 % more. Albinos, on the contrary, had higher rates when fed with Aquarex compound feed — the average daily increase was 2.77 g, and on Le Gouessant compound feed — 2.13 g, which is 30.0 % lower. As a result of the conducted studies, it was found that the highest fish-breeding and biological indicators were achieved by sterlet fingerlings of the usual color when feeding them with Le Gouessant compound feed, and albino sterlets-when using Aquarex feed with a higher fat content. This indicates that for the successful cultivation of albino sterlets, mixed feeds with a fat:protein ratio of 1:2.5 should be used, and sterlets of ordinary color — 1:4.3, which should be taken into account when selecting mixed feeds, or making a diet.

The using of a paste of fermented fish feed in gestation sows feeding

The article presents the results of using fermented forage fish paste prepared from waste from processing of Far Eastern commercial fish in the diets of pregnant sows. The use of this additive in feeding sows had a positive effect on their reproductive qualities, which allowed to increase the multiplicity of sows’ livestock by 3.8-9.7%, large-scale fertility by 1.7-5%, the average daily growth of piglets by 5.4-7.8%, and increase the safety of newborn piglets by 2.2-4.4%. The absolute increase in live weight of sows in the experimental groups during pregnancy was higher by 2.0 kg, 4.4 kg and 4.9 kg compared to their counterparts from the control group. At the same time, the average daily increase in live weight in sows of the experimental groups compared to animals of the control group was higher by 3.7-9.9%, respectively. The best indicators were noted when feeding fish paste fermented feed at a dose of 3 and 6.2% of the nutritional value of the diet.

An experimental investigation of sea water distillation using flat absorber plate and fin absorber plate with PCM storage

The presented study investigates the experiment of the thermal performance of sea water solar distillation system using flat absorber plate and fin absorber plate with phase change material (PCM) storage. The two distillation systems operated simultaneously under the same conditions to study its thermal performances. The experimental investigation shows that the distillation using fin absorber plate with PCM storage achieves better thermal performance than that of using flat absorber plate. The daily water productivity of the distillation using fin absorber plate with PCM is 262.75 mL m−2 in average and the other one is 142.85 mL m−2 in average. The average daily efficiency increases of 48.5 % of the distillation using fin absorber plate with PCM storage compared with the distillation using flat absorber plate. Using absorber plate with fin and PCM storage in the distillation system contributes to increase the thermal performance of the system.

Effectiveness evaluation of the in vivo formation of mutton productivity and consumer properties from native breeds in the Volga region

The article assesses the production method of young native sheep in the Volga region being sold in their birth year. Scientific and industrial studies were conducted to evaluate the effectiveness of the in vivo formation of meat productivity and consumer properties of mutton from young sheep of the Bakur breed. The results of the studies showed that the average live weight of Bakur sheep at birth is 3.9 kg. In the weaning time at the age of 4 months sheep weigh 27.5 kg, that is, the weight increased 7.1 times. The average daily weight increase in Bakur rams up to a month of age was 233 g; from a month to 2 months of age - 223 g; from 2 to 4 months of age - 165 g. The best morphological composition of carcasses belonged to young animals of 12 months of age, the ratio of meat to other tissues reached 80.8% and 17.2%. The content of tryptophan in lambs and young animals significantly exceeds the amount of oxyproline, which is a representative of defective proteins. Based on the above facts, the muscle tissue of the longest back muscle has a high commercial quality due to the thinnest muscle fibers with small impregnations of fat and is considered the most tender.

ПРОБИОТИЧЕСКИЙ КОМПЛЕКС «ЛИКВАФИД» ДЛЯ МОЛОДНЯКА СВИНЕЙ НА ДОРАЩИВАНИИ

The article clearly demonstrates the effectiveness of the probiotic complex LiquaFid consisting of live cultures of bacteria Bacillus megaterium and Bacillus subtilis on the productive indicators, viability and morbidity of young pigs during the rearing period. It was found that at the end of the research and production experience, the live weight of piglets receiving the probiotic complex was higher by 0.92 kg, the average daily increase – by 35.0 g. At the same time, the additional profit per 1 ruble of additional costs was 6.55 rubles.

Zoo-Technical Features of Tabun Horses in Almaty Region of Republic of Kazakhstan

This work was attended to improve and show the comparative characteristics of exterior features, assessment of the constitutional type of horses, determination of the direction of the productive profile of mares bred in LLP AKBOZ of Almaty region. Horse meat obtained in herd horse breeding contains a high number of nitrogen-containing substances with a reduced content of intramuscular fat. Therefore, horse meat is a dietary product available to a significant part of the population of the Republic of Kazakhstan. Meat herd horse breeding requires minimal costs, since local feed is used for raising animals. An unlimited amount of pasture land significantly contributes not only to an increase in the number of herd horses, but also to an increase in the production of high-value meat-horse meat. The results of individual appraisal showed that modern Kazakh horses of the zhabe type (or toad type) are quite large, have a high live weight. The young growth in measurements and live weight exceeds the corresponding requirements for animals of the I appraisal class. It was found that the greatest increase in live weight in foals was observed from 3 days of age to 1 month and was 40.8 kg in stallions and 40.4 kg in fillies. The average daily increase was 1511 and 1496 g, respectively. From 1 to 6 months of age, the increase in live weight is 84.8 kg in stallions, 83.0 kg in fillies, the average daily increase was 543 and 532, respectively.

IMPROVING POULTRY FARMING EFFICIENCY BY DEVELOPING THE SANITARY QUALITY OF MIXED FEED WITH MYCOTOXIN ADSORBENTS

The article presents the results of production tests of “Belasorb” and “MeKaSorb” feed additives developed by us on the basis of tripoli. The object of research was broiler chickens of the cross Ross-308. Feed additives were given for a comparative purpose for mycotoxicoses prevention in poultry. Based on the conducted studies it was found that mycotoxin adsorbents additives based on tripoli contribute to improving the sanitary quality of feed and stimulating the assimilation of feed nutrients in the poultry gastrointestinal tract which leads to an increase in the average live weight – by 16.1-15.8%, an average daily increase – by 13.4-12.8%, guaranteed livestock safety at the level of 95.55-95.56% and a reduction in feed consumption per production unit up to 3.0-3.6%.

Study of the effect of active coal feed additive on the productivity of meat geese

The study of new effective fodder additives produced from byproducts of various industries, including the timber processing industry, is a very relevant issue. Research has been carried out on the study of active coal fodder phytoaddition in feedstuffs for geese fed to meat. According to the results of the scientific experiment, it was established that when introducing the tested active coal fodder additive in the diets of young geese of the Lindov breed, a positive tendency to increase the live weight of poultry, gross and average daily increases was noted, feed costs per 1 kg of increase in live weight were reduced, slaughter yield increased, and the level of profitability of growing geese per meat increased. Reliable increase of mass of muscular tissue of geese in case of slaughter in the second group by 3.3% has been established.

Effect of the Bacillus subtilis-based drug on the morphobiochemical and productive parameters of calves

The effect of Bisolbi drug based on Bacillus subtilis on the physiological, biochemical and productive parameters of calves was studied. The research and production experiment was carried out in a dairy farm “Kupinskoe” of Samara Region on 30 calves of the Holstein-Frisian breed. The drug increases the intensity of the anabolic processes in animals: the amount of total protein in blood serum of calves of the experimental group at 120 days of age was higher by 8.9% (p≤0.05), albumin 9.2% (p≤0.01), compared with control animals. The purpose of Bisolbi contributed to the increase in the intensity of carbohydrate-lipid metabolism: cholesterol was higher by 23% (p≤0.01), glucose 0.4 mmol/l (p≤0.05) in blood 120-day calves of the experimental group, relative to the data of the control group. It was found that the body weight of calves in the control group at 100 days of age was 105.23±2.11 kg, in the experimental group -108.6±2.19 kg. The average daily gain in the experimental group was significantly higher by 0.075 kg (p≤0.01). At 120 days of age, the body weight of the experimental calves was higher by 4.19 kg (p≤0.05), the average daily increase by 0.080 kg (p≤0.05), relative to the control animals.

ПРИМЕНЕНИЕ БЕЛКОВЫХ ГИДРОЛИЗАТОВ В КРОЛИКОВОДСТВЕ И ИХ ВЛИЯНИЕ НА ПОКАЗАТЕЛИ КАЧЕСТВА И БЕЗОПАСНОСТИ МЯСА

There are presented materials on the use of feed additives based on protein hydrolysates of plant origin (Abiopeptide and Abiotonic) in rabbit breeding, as well as the results of organoleptic studies and determination of safety indicators and biological value of the resulting meat. It was noted that the feed additives Abiopeptide and Abiotonik contributed to an increase in the live-weight of rabbits, which, on average, in animals of the 1st experimental group (Abiopeptide) reached - 3.35 kg, the 2nd (Abiotonic) - 3, 42 kg and in control - 3.08 kg. The analysis of the obtained results showed that the average daily increase in the liveweight of rabbits in the 1st group was 42.6 ± 5.23 g, the 2nd - 44 ± 7.44 g, and in the control - 38.2 ± 5.33 g , which by 11.5% and 15.2%, respectively, exceeded the increase in body weight of control animals. It has been established that in terms of organoleptic characteristics, the meat of rabbits of the experimental and control groups meets the requirements of good-quality meat that meets the requirements of GOST 20235.0-74 “Rabbit meat. Sampling methods. Organoleptic methods of quality assessment”. When examining the toxicity and biological value of meat, its negative effect on the growth and survival of the test culture Tetrachimena pyriformis was not established. Rabbit meat complies with the requirements of SanPiN 2.3.3.1078-01 "Hygienic requirements for the safety and nutritional value of food", p. 1.1.1, 1.1.1.1.