scholarly journals Features of feeding the slaughter young stock of minks with complete feed

2021 ◽  
Vol 211 (08) ◽  
pp. 42-50
Author(s):  
Vladimir Kulikov ◽  
Elizaveta Kvartnikova ◽  
Elena Krovina
Keyword(s):  
Experimental Studies ◽  
Live Weight ◽  
Control Group ◽  
Young Stock ◽  
Experimental Animals ◽  
Main Period ◽  
Alternative Type ◽  
Males And Females ◽  
Experimental Group ◽  
Plant Components

Abstract. In the domestic fur farming there is an urgent need to introduce an alternative type of feeding for young minks. The purpose of the work is to study possible of feeding commercial young minks with complete feed, consisting of animal and plant components. Methods. In a scientific and economic experiment on young sapphire minks intended for slaughter, 2 groups were formed according to the principle of analogues, 32 heads each (16 males and 16 females): I – control, II – experimental. The animals of the control group received from 2015 August 5 to September 15 a typical general economic ration in the form of a wet mash, an experimental one – a loose, complete feed (made according to a recipe developed by us, taking into account the current norms), mixed with water in a ratio of 1:2. All experimental studies were carried out using classical zootechnical, pathomorphological, histological, veterinary-sanitary and statistical methods. Results and scope. The dynamics of the live weight of the experimental minks showed that by the beginning of the main period, the males and females of the experimental group lagged behind the control animals, after switching to the main diet for slaughter, the males lag remained and the females caught up with the control animals. But the control and experimental animals did not differ in the length of the carcass. The safety of the livestock was higher in the experimental group: males – 100 %, females – 93.75 %; in control – 93.75 % and 87.5 %, respectively. According to the main productive indicator – the quality test – the skins of the control and experimental animals did not have significant differences. Thus, the development of an alternative type of feeding is quite possible, but it requires improvement in the direction of increasing the coefficient of digestibility of nutrients and adaptation of males to an uncharacteristic type of feeding. Scientific novelty. The prospects and the need to introduce an alternative type of feeding the commercial young stock of minks with full-feed compound feeds into the domestic fur farming are outlined.

scholarly journals Impact complexes nanokarboksylativ and drug Kvatronan-Se on hematological parameters of blood of experimental animals

2017 ◽  
Vol 19 (74) ◽  
pp. 123-126
Author(s):  
N. B. Seba ◽  
M. A. Khomenko
Keyword(s):  
Blood Cells ◽  
Hematological Parameters ◽  
Live Weight ◽  
Control Group ◽  
Experimental Animals ◽  
Group I ◽  
Control Research ◽  
Research Experiment ◽  
The Village ◽  
Experimental Group

In this paper present the results of research of influence of the preparation «Kvatronan-Se» and carboxylates of Se, Cu, Mn, Cr, Ge in different combinations on haematological parameters of blood of experimental animals. Study was carried out on the basis of PC Haleks-Agro. It is located in the village Gul'sk of Novograd Volynskiy district of Zhytomyr region. In the farm to bred of Simmental cows. For the experiment was formed four groups. We took into account age, live weight of 650–700 kg and the average milk yield 5000–6000 kg. Animals is located in identical conditions of feeding and maintenance. Research experiment was carried out on animals couples counterparts.  Preparations introduced animals three times at 10–12 days after insemination. The cows first experimental group were injected complex nanokarboksylativ Ge, Cu, Mn and Cr, second – drug Kvatronan–Se and animals third experimental group was administered a complex composed of Se, Cu, Mn, Cr. On 13 day after insemination in experimental animals were taken blood from tail vein and examined the contents of hematological parameters. Established that injection nanokarboksylativ enhance the fertility of cows in the first and third group, the figure rose to 20% in the second by 40% compared with the control. Research hematological parameters blood  animals shows that after entering content drugs of blood cells had minor changes but remained within the physiological norm. The results show that in  concentration monocyte the second group  was at 5.53% (P > 0.01) higher compared to the control group and 2.3% compared to the first and third. The content of lymphocytes in this group decreased by 26.3% (P > 0.05), 22% and 16% relative to the control, the first and third groups. Also, it should be noted that the hemoglobin in the experimental groups decreased in group I by 7.9% in the II – 3.9% and III by 7.3% compared with the control group. Also, these groups distinguished downward trend eosinophils 1.8%, 1.5%, 2.05%. Then, as the number of segment-nuclear neutrophils contrast, in the first group increased by 18.2% in the second and third at 16.9% comparatively control. The number of monocytes in the second group doslfidniy the suspicion was higher by 66.3% and 0.3% higher than the physiological norm – it may indicate a high immune response.

scholarly journals Productivety of swine fed on poliacrylamide, mineral and vitamin additives

2019 ◽  
pp. 111-117
Author(s):  
P. Kuzmenko ◽  
V. Fesenko ◽  
V. Bilkevych ◽  
P. Karkach ◽  
Yu. Mashkin
Keyword(s):  
Live Weight ◽  
Mineral Elements ◽  
Iron Sulfate ◽  
Control Group ◽  
Blood Proteins ◽  
Standard Compound ◽  
Main Period ◽  
Feeding Effect ◽  
Feed Costs ◽  
Experimental Group

The feeding effect of polyacrylamide (PA), mineral and vitamin additives (MVA) on the reproductive and productive qualities of sows, as well as the development and viability of piglets gained from them has been studied. The polyacrylamide, mineral and vitamin additives have been added to the sow diet of the 2nd and 3rd experemental groups. It has been done according to the animal need in minerals and vitamins. In proportion of 0,5/1 kg of live weight, the mineral and vitamin aditives, polyacrylamide have been added to the ration of sows from the 2nd experimental group. The mineral and vitamin aditives have been added to the ration of the 3rd group in such proportion: iron sulfate – 200, copper carbonate – 15, zinc – 84, cobalt – 3, manganese chloride – 69, potassium iodide (stabilized) – 170 mcg, vitamins A – 2.8 th. IO, D – 736 IO, B1 – 1.4 mg; B2 – 8.4 micrograms per head per day. The mineral and vitamin additives, polyacrylamide have been added to the sow diet of the 4th experimental group in the same proportion as it has been already mentioned above. The sows fed on PA and MVA for 60 days. The feeding was stopped 10 days before farrowing. The experiment on piglets has been carried out in 2 stages. The equalization period was 25 days (the ration of piglets from the control and experimental group was the same). The main period was 150 days (the control group of animals fed on standard compound fodder). The experimental group fed on additional PA and MVA. It has been noticed when the additives are added to the sow diet the gained piglets have an increase of viability, immun response (due to gamma globulins increase in blood proteins) and the average live weight by 23.3% during the rising period. Key words: sows, piglets, polyacrylamide, mineral elements, vitamins, live weight, albumin, globulins, rearing, fattening, feed costs, slaughter yield.

scholarly journals Effect of feeding of chelated zinc form on security, productivity and slaughter parameters of broilers

2021 ◽  
pp. 110-118
Author(s):  
Tetiana Fotina ◽  
Hanna Fotina ◽  
Svitlana Nazarenko ◽  
Roman Tymoshenko ◽  
Oleksii Fotin
Keyword(s):  
Broiler Chickens ◽  
Average Daily Gain ◽  
Experimental Studies ◽  
Live Weight ◽  
Feed Consumption ◽  
Control Group ◽  
Significant Difference ◽  
Veterinary Faculty ◽  
Experimental Group ◽  
Effect Of Feeding

The results of the effect of feeding the chelated form of Zinc on the safety, productivity and slaughter parameters of broiler chickens are presented. The aim of this study was to determine the safety, productivity and slaughter parameters of broilers on the background of feeding chelated form of Zinc. Materials and methods. Experimental studies were conducted during 2020 on broiler chickens cross Cobb-500 in the vivarium of the Veterinary Faculty of Sumy National Agrarian University (Ukraine), divided into two groups on the principle of analogues (control and experimental) of 50 broilers each. The source of zinc for chickens in the control group was their sulfates. Chelated forms of Zinc were used for broiler chickens of the experimental group. All groups of broiler chickens were administered the compound with compound feed in a dose that corresponded to the daily requirement of the bird in this trace element. The duration of the experiment is 42 days. The growth and development of broilers were evaluated on the basis of determining the relevant zootechnical indicators. Live weight of birds was determined by individual weighing on scales of the VNC type with an accuracy of ±1 g at the age of 7, 14, 21, 28, 35 and 42 days. Both scientific and economic experiments also determined the preservation of livestock - daily by the number of culled and dead birds. Feed consumption was recorded daily, for each week of cultivation and for the entire period of the experiment. At the end of the experiment, the cost of feed per 1 kg of live gained weight was calculated. Results. According to the results of the conducted researches, it was established that feeding of the chelated form of Zinc probably increased both the average daily gain and the total live weight of broiler chickens at different age periods of rearing. The live weight of chickens at the beginning of the experiment was almost the same, but at 7 days of age it tended to increase in chickens of the experimental group, although a significant difference between groups in this indicator was not found. It was found that the weight of uneviscerated, semi-eviscerated and eviscerated chicken in poultry of the experimental group was greater than similar indicators in the young animals of the control group by 9.3, 9.2, and 9.8 %, and this difference was significant (p<0.01). The yield of semi-eviscerated carcasses was higher in ones of the experimental group (84.19 %), and the difference was significant (p<0.05). Conclusions. It was found that the live weight of chickens of the experimental group (consumption of feed with a chelated form of Zinc) prevailed at 7 days of age by 1.1 g; on the 14th day – on 22.1 g (p<0.01); at 21 days – 35.4 g (p<0.01); at 28 days – 94.5 g (p<0.05); at 35 days – 133.6 g (p<0.01); at 42 days – at 218.9 g (p<0.05). Preservation of young animals in the experimental group, which used chelated compounds of Zinc, was higher and amounted to 96 %, compared with the control – 92 %. By age, feed costs per unit weight gain were lower in the experiment, respectively: 0.05; 0.08; 0.12; 0.06; 0.07 and 0.05 kg, compared to the control group. Growing broiler chickens on compound feed with a chelated form of Zinc by 9.8 % (p<0.01) increases the weight of the eviscerated carcass.

scholarly journals Effects of peat feeding on the performance and health status of fattening pigs and environmentally derived mycobacteria

2012 ◽  
Vol 51 (No. 12) ◽  
pp. 533-543 ◽  
Author(s):  
M. Trckova ◽  
Z. Zraly ◽  
L. Matlova ◽  
V. Beran ◽  
M. Moravkova ◽  
...  
Keyword(s):  
Health Status ◽  
Lymph Nodes ◽  
Control Diet ◽  
Live Weight ◽  
Control Group ◽  
Large White ◽  
Experimental Animals ◽  
And Performance ◽  
Short Time ◽  
Experimental Group

The purpose of the present study was to investigate the effects of feeding peat as a supplement in the period after weaning on the performance and health status of pigs. Also to assess the risk of the development of tuberculous lesions in the lymph nodes and parenchymatous organs, caused by conditionally pathogenic mycobacteria present in peat. Twenty Large White&nbsp;&times;&nbsp;Landrace pigs in equal numbers of barrows and gilts (mean live weight 18.0&nbsp;&plusmn;&nbsp;1.7&nbsp;kg) were used in the experiment. The experimental group was fed a diet containing commercial underground peat in the dose of 80&nbsp;g peat/kg dry matter for 30 days. Subsequently, they were fed an identical diet with the control group without peat for 60 days. A short-time feeding peat did not significantly affect the growth and performance of pigs. From day 21, a statistically highly significant (P &lt; 0.01) increase in the consumption of the experimental diet was recorded, however, without a positive effect on the growth of experimental animals. The conversion of the peat containing diet was comparable to the conversion of the control diet. It follows from the results of biochemical analysis of blood that peat feeding for 30 days did not adversely affect the metabolic profile and health status of experimental animals. No tuberculous or tuberculoid lesions in lymph nodes or parenchymatous organs were detected in any of 20 slaughtered animals. Despite that, mycobacteria were isolated from 10 (25.0%) tissues of 5 (50.0%) pigs from the experimental group. One isolate was identified as Mycobacterium avium subsp. hominissuis (IS901&ndash; and IS1245+). Seven of nine isolates were determined as conditionally pathogenic atypical mycobacteria: M.&nbsp;fortuitum (n&nbsp;=&nbsp;2) and M.&nbsp;xenopi (n&nbsp;=&nbsp;5). It follows from the present results that feeding of a peat supplemented diet to pigs may be considered as economically non-effective and due to the findings of mycobacteria as risky.

Experience in the use of probiotic drug in pig breeding

2021 ◽  
pp. 45-50
Author(s):  
A. A. Belookov ◽  
O. V. Belookova ◽  
E. V. Chukhutin
Keyword(s):  
Blood Cells ◽  
Live Weight ◽  
Reproductive Traits ◽  
Control Group ◽  
Experimental Animals ◽  
Second Stage ◽  
Young Pigs ◽  
Calcium And Phosphorus ◽  
Productive Traits ◽  
Experimental Group

The results of research on the use of the probiotic drug “Profort” in the diet of young pigs have been presented in the article. The research was carried out under the conditions of LLC “Agrofirma Ariant” on the crossbreds of young pigs. The purpose of the research was to study the eff ectiveness of the effect of the probiotic drug “Profort” in intensive pig rearing on the reproductive traits of sows and the productive traits of piglets. In order to conduct the scientific and economic experiment at the first stage, 2 groups of pregnant sows were formed in each with 10 heads. The feeding and housing of the experimental animals were the same. In addition to the main diet the sows of the experimental group were fed the probiotic additive “Profort” at the dose of 500 g/t of feed for 30 days before and 30 days after farrowing. At the second stage the resulting young animals were divided into 3 groups. In addition to the main diet the young animals of the 1st experimental group have been received the probiotic drug “Profort” from 7 to 105 days together with compound feed. Piglets of the 2nd experimental group have been received the probiotic additive from 7 to 30 days. It has been found during of studies that as a result of the use of probiotic additive the prolificacy of sows in the experimental group was higher – 10,6 compared to 10,4 heads in the control group. The livability of piglets for weaning in the experimental group was 97,9 % compared to 93,9 % in the control group. The absolute gain in live weight of piglets from 30 to 105 days in the experimental groups was 34,94–36,98 kg, which was higher than in the control group by 7,9–14,2 %. In the blood of piglets of the experimental groups, the increase in the level of red blood cells, total protein, calcium and phosphorus has been noted.

scholarly journals The egg productivity of quails for feeding different levels of dry post-alcohol bard in composition of feed

2020 ◽  
pp. 82-87
Author(s):  
A. Plyska ◽  
I. Ibatullin
Keyword(s):  
Experimental Studies ◽  
Animal Husbandry ◽  
Control Group ◽  
Average Weight ◽  
Egg Weight ◽  
Significant Difference ◽  
Negative Effect ◽  
Main Period ◽  
Positive Effect ◽  
Experimental Group

Numerous studies in animal husbandry are aimed at substantiating the feasibility of using waste from technical industries in animal feeding. Recently, dry post-alcohol bard can be found in compound feed recipes. It is a good source of protein, but its amount in the feed is limited due to the presence of anti-nutrients. Experimental studies of the dynamics of productivity of laying quails for the consumption of complete feed with different proportions of dry post-alcoholic bard were conducted. For this purpose 5 groups of quails of an egg direction of productivity on 30 animals aged 42 days everyone were formed. Quails of the control group consumed complete feed, which did not contain dry post-alcoholic bard. Instead, animals of the 2nd, 3rd, 4th and 5th experimental groups during the main period of the experiment were fed, respectively, 5%, 10, 15 and 20% of dry post-alcoholic bard. The nutritional value of compound feeds of all groups was the same. During 120 days of the main period of the experiment, the most prevalent control animals were quails of the 3rd experimental group, which consumed 10% of dry post-alcoholic bard as part of the feed. Slightly smaller (5.0%) was the predominance of animals of the 2nd experimental group, the content of bards in the diet of which was 5%. The least different from the control indicators were the quails of the 4th experimental group, which only 0.3% outperformed the latter, consuming 15% of dry bard in the compound feed. The share of dry post-alcoholic bard 20% in the complete feed of quails of the 5th experimental group had a negative effect on their productivity, as the gross collection of eggs in this group was less than the control by 1.6%. In addition to differences in the number of collected eggs, the results of the experiment showed a statistically significant difference in the weight of laid eggs between animals of the control and experimental groups. During the main period of the experiment on the average weight of eggs the most control was dominated by birds of the 3rd experimental group - by 1.1%. Slightly smaller (0.7%) was the predominance of animals of the 2nd experimental group. Quails of the 4th experimental group were little different from the control in terms of egg weight - only 0.4% outweighed it. The birds of the 5th experimental group also slightly differed from the control in terms of egg weight - only 0.2% inferior to it. Thus, the inclusion of 5–10% of dry post-alcoholic bard in the feed has a positive effect on the productivity of quails. Key words: dry post-alcoholic bard, eggs, quails, laying, egg weight, compound feed, feeding.

scholarly journals Comparative Assessment Of Economic Traits Of Pigs Of Different Breeds And Breed Combinations

2021 ◽  
Vol 24 (2) ◽  
pp. 47-53
Author(s):  
Alina Shuliar ◽  
Alona Shuliar ◽  
Valerii Andriichuk ◽  
Svitlana Omelkovych ◽  
Volodymyr Tkachuk ◽  
...  
Keyword(s):  
Live Weight ◽  
Well Being ◽  
Offspring Size ◽  
Control Group ◽  
Economic Traits ◽  
Large White ◽  
Young Stock ◽  
Reproductive Ability ◽  
Group 2 ◽  
Experimental Group

On the territory of Ukraine, for decades, the pig industry has traditionally remained one of the main reserves for ensuring the financial well-being of the population. Among the factors contributing to the profitability of pig breeding enterprises, a significant role is played by the breeding capacity of sows, since it guarantees the receipt of livestock for rearing and fattening. An indisputable condition for ensuring the efficiency of pig production is to increase the fattening and meat characteristics of pigs. With this in mind, the purpose of the study is to investigate the abovementioned economic traits of pigs, which is currently an urgent task. The research was preceded by the establishment of three groups of sows and young stock, numbering 10 animal units each, located in similar economic conditions. According to the investigational plan, three groups of pigs are provided depending on the genotype: control group 1 – Large White (LW); experimental group 2 – Landrace (L); experimental group 3 – 1/2LWx1/2L (maternal base – Large White, paternal – Landrace). As a result of the conducted studies, it was found out that the local pig population obtained from crossing purebred animals of the Large White and Landrace breeds prevailed in terms of productivity over the original parent forms. From them, on average for three farrowing operations, the largest number of piglets at birth and the highest multiplicity were obtained. An unreliable correlation was found between the characteristics of the reproductive ability of sows and the number of farrowing. The correlation coefficient between the farrowing number and the number of piglets at birth had a negative value – -0.013; for fertility – positive – +0.038; for the offspring size – +0.014; milking capacity – +0.044. At the age of 1, 2, 3, 5, and 6 months, local young stock had the highest live weight, and the Large White pigs had the lowest values with significant differences (P≤0.05-0.001). The Landrace pigs had the highest live weight at birth and at the age of 4 months, and the Large White pigs had the lowest live weight (P≤0.05-0.001). The findings allow increasing the efficiency of the pig industry and prove the expediency of interbreeding in order to increase the economic traits of pigs

scholarly journals Evaluation of the impact of plant extracts in different concentrations on the ecosystem of broilers’ intestine

2019 ◽  
Vol 9 (4) ◽  
pp. 4168-4171 ◽  
Keyword(s):  
Plant Extracts ◽  
Broiler Chickens ◽  
Experimental Studies ◽  
Live Weight ◽  
The United States ◽  
Detailed Examination ◽  
Control Group ◽  
Micro Organisms ◽  
The Impact ◽  
Experimental Group

Modern research shows that several plant extracts containing tannins can improve the nutrition and the health status of farm livestock. In view of the fact that there is a certain dependence of the tannin activity on the source, geographical distribution, the assessment of their effects on changing the intestine microbiota is poorly studied. Experimental studies were conducted on 120 heads of 7-day-old broiler chickens (4 groups, n = 30, 4 replications). The control group received the main ration (MR); the first experimental group – MR + extract 1 (1 ml/kg of live weight); the second experimental group – MR + extract 2 (2 ml/kg of live weight); the third experimental group – MR + extract 3 (3 ml/kg of live weight). An extract from Quercus cortex was additionally included in the composition of experimental groups’ rations. Sequencing the content of samples from the small and cecal intestine was carried out at the second generation sequenator MiSeq Illumina (the United States). As the concentration of the extract increased, micro-organisms of phylum Bacteroidetes shrunk (I) and then disappear (II, III). The maximum concentration found a decrease of phylum Firmicutes (p ≤ 0.05) and an increase of Proteobacteria (p ≤ 0.05). This group also revealed a decline of representatives of class Bacilli (p ≤ 0.05). In groups I and II, representatives of class Clostridia decreased by 14.6-50.5% in comparison with the control. The ratio of representatives of microorganisms in the intestine depends on the number of tannin-containing substances in the extract, which reveals the need for a more detailed examination of this factor as a source of such substances.

Influence of DAFS-25+polizon composition on blood and functional state of liver of steers at fattening

2020 ◽  
pp. 15-18
Author(s):  
Inna R. Kilmetova ◽  
◽  
Igor A. Rodin ◽  
Nazira I. Khayrullina ◽  
Nikolay G. Fenchenko ◽  
...  
Keyword(s):  
Functional State ◽  
White Blood Cells ◽  
Live Weight ◽  
The Body ◽  
Farm Animals ◽  
Control Group ◽  
Standard Diet ◽  
The Impact ◽  
Experimental Group ◽  
Stimulation Of

Summary. The disbalanced feeding and the uneven distribution of micro- and macroelements in the environment leads to a trace element, in particular hypomelanosis. To accelerate the growth and preservation of young farm animals include in the diet of various biological additives and drugs, which include selenium. For stimulation of weight gain in the livestock industry, as well as for the prevention and treatment of pathological processes in addition to micro - and macrouse amino acids, primarily methionine. The aim of this work was to study the influence of composition of DAFS-25+Polizon on morpho-biochemical parameters of blood and functional state of the liver in fattening bulls of black-motley breed in the conditions of the Republic of Bashkortostan. Experiments using were conducted on bull-calves of black-motley breed of the properties in the properties age from 6 to 15 months. The first experimental group during the experiment was additionally given the composition of DAFS-25+Polizon at a dose of 2 mg/kg, the animals of the control group received a standard diet. To assess the impact of the composition DAFS-25+Polizon on metabolism cattle studied morphological and biochemical indicators of blood and conducted histological examination of the liver. It is established that the use of the composition of DAFS-25+Polizon at a dose of 2 mg/kg increases the number of erythrocytes and hemoglobin in the experimental group and reduces the amount of white blood cells. The serum content of total protein, phosphorus and calcium increases in the group of experimental animals. Microscopic examination of the liver revealed no changes in the structure of the organ and hepatocytes in the experimental group, whereas in the control group hemodynamic disorders and dystrophic changes in liver cells were observed. Thus, the use of the composition DAFS-25+Polizon at a dose of 2 mg/kg of live weight in fattening bulls black-and-white breed contributes to the increase of redox processes in the body, stimulation of metabolism, prevent the development of liver disorders of cellular mechanisms of metabolism, optimizes the structure of the liver, which generally provides higher productivity.

Local mineral feed additives in the rations of steers of Hereford breed

2020 ◽  
pp. 28-39
Author(s):  
M. Grigoryev ◽  
N. Chernogradskaya
Keyword(s):  
Economic Effect ◽  
Live Weight ◽  
Negative Influence ◽  
Feed Additives ◽  
The Body ◽  
Control Group ◽  
Mineral Salts ◽  
Meat Productivity ◽  
Experimental Group ◽  
Mineral Feed Additives

Animals imported to Yakutia from other regions fall into feeding and housing conditions that differ from their usual agro-climatic conditions, which causes the problem of their adaptation. Yakutia is one of the areas where the feed of its own production has a lack of basic minerals, which affects the health and productivity of animals, which has an additional negative influence on the adaptation process of imported cattle. In order to replenish macro- and microelements in the body, it is necessary to introduce various local mineral feed additives, premixes, and use mineral salts into the ration. Under the conditions of Central Yakutia the influence of local mineral feed additives (zeolite of the Khonguruu Deposit in the Suntar district and sapropels of local lakes) containing macro- and microelements that increase the meat productivity of steers has been studied. As a result of the research the influence of local mineral feed additives on meat productivity and physiological condition of Hereford steers has been established. Influence of zeolite and sapropel in a complex with mineral salts on digestibility of nutrients of the ration and use of nitrogen, calcium and phosphorus by experimental animals has been defined. The influence of feed additives on the quality of meat products has been studied. The results have shown that the use of local mineral feed additives in the composition of ration of steers during the fattening period at a dose of 0,7 g zeolite per 1 kg of live weight of the animal and 200 g of sapropel in combination with 10 g of mineral salts contributed to the gain in live weight, carcass weight, carcass yield, yield of edible parts, and economic efficiency of fattening. For the entire period of the experiment the gain in live weight in groups was: in control group 2222,9 kg, in the 1st experimental group 2396,2 kg, in the 2nd experimental group 2471,1 kg. The total economic effect for the 1st experimental group for the period of experiment amounted to 44,3 thousand Rubles, for the 2nd experimental group 78,0 thousand Rubles or per 1 head/day 14,06 and 24,76 Rubles, respectively.

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