scholarly journals Effect of β-mannanase enzyme supplementation on the morphofunctional state of broiler chickens’ immunocompetent organs

2020 ◽  
Vol 11 (4) ◽  
pp. 579-587
Author(s):  
A. V. Oliyar ◽  
P. M. Skliarov ◽  
D. M. Masiuk ◽  
D. D. Bilyi ◽  
V. V. Logvinova ◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Average Length ◽  
Average Daily Gain ◽  
Cortical Layer ◽  
Control Group ◽  
Entire Study ◽  
Immunocompetent Organs ◽  
Feed Costs ◽  
Enzyme Supplement ◽  
Lymphatic Organs

Identifying and eliminating factors that interfere with the nutrient absorption from feed is essential for successful poultry rearing. The nutritional value of feed mixtures used in the poultry industry can be increased by the use of enzyme supplements, in particular β-mannanase (Hemicell), which breaks down the anti-nutrients β-mannans that are present in significant quantities in soy products. For the study, two groups of 50 broiler chickens were formed. In the control group a standard feed mixture from cereals was used, particularly soybeans, and in the experimental group 0.05% β-mannanase enzyme supplement (Hemicell) in addition to the compound feed was used. Production indicators were established (average daily gain, survival rate, feed costs). On the 15th, 25th and 42nd days of rearing, lymphatic organs (cloacal bursa and spleen) were collected from seven chickens of each group, followed by macro, microscopic and morphometric evaluation. It was found that the addition of an enzyme supplement promotes an increase in the production indicators of poultry rearing, reduces feed use, does not affect the macroscopic characteristics of the lymphatic organs. β-mannanase (Hemicell) contributes to the maintenance of an active morphofunctional state of the cloacal bursa and spleen during the entire period of poultry rearing. This was manifested by high indices of the absolute and relative organ masses, a moderate development degree of tissue components and cloacal bursa histological structures (number, shape and average length of lymphatic nodules, density of lymphocytes in the cortex and medulla) and spleen (number and diameter of lymphatic nodules and periarterioal lymphatic sheaths). In the control group, at all stages of rearing, the morphofunctional state of the bursa was found to be lower and signs of immunosuppression were revealed by the end of the rearing period (a sharp decline in the bursa absolute mass, organ mass index, a decrease in the average length of nodules, change in their shape, thinned cortical layer and delymphotisation). The morphofunctional state of the spleen of chickens from the control group remained high throughout the entire study period. So use of the β-mannanase enzyme supplement (Hemicell) while rearing broiler chickens not only increased the efficiency of their rearing but also contributed to maintaining a high morphological and functional state of the cloacal bursa.

scholarly journals THE IMPACT OF PROBIOTIC “PROPIONOVYY” ON THE PRODUCTIVITY AND HEMATOLOGICAL FEATURES OF BROILERS

2019 ◽  
pp. 98-104
Author(s):  
T. N. Orlova
Keyword(s):  
Broiler Chickens ◽  
Hematological Parameters ◽  
Average Daily Gain ◽  
Live Weight ◽  
Cholesterol Concentration ◽  
Control Group ◽  
Livestock Farming ◽  
Siberian Research Institute ◽  
Feed Costs ◽  
The Impact

The paper demonstrates the results of applying some doses of probiotic specimen “Propionovyy” when feeding broilers. Propionovyy specimen was developed by the staff of the Laboratory of Microbiology of the department “Siberian Research Institute of Chemistry” of Federal Altai Center of Agricultural Biotechnologies. It includes multi strain propionate of Propionibacterium freudenreichii type taken from the Siberian collection of microorganisms. The scientific and economic experiment was conducted at the poultry farm of LLC Kuzbass Broiler in the Kemerovo region. The researchers arranged four groups of broiler chickens; each group contained 198 broilers. The control group received a basic diet without probiotics. In the experimental groups, different dosages of Propionovyy specimen were added to the main diet instead of feed antibiotic. The experiment explores the effect of “Propionovyy” specimen on livestock farming and physiological parameters of broiler chickens. The following indicators were considered: live weight, absolute and average daily gain of live weight, poultry liveability, feed costs per 1 kg of gain, morphological and biochemical indicators of blood at the age of 28 and 39 days. The researchers observed the chickens of experimental groups who received probiotic specimen “Propionovyy” and found out an increase in live weight by 0.49-1.94%, an absolute and average daily increase of up to 2.00%. The safety of the chickens receiving the probiotic was increased by 1.00-2.02% compared to the control group. Hematological parameters of blood in chickens of all groups varied within the limits of physiological standard that testifies to the healthy physiological condition of the poultry. The authors found out the decrease of glucose and cholesterol concentration in blood serum in the experimental groups. According to the research results the authors elaborated the appropriate and efficient dosage of “Propionovyy” specimen, rendering the greatest positive effect on productive qualities of poultry and reducing expenses of forages on 1 kg of growth on 0,05 kg.

Pengaruh penggunaan ramuan herbal sebagai feed additive terhadap in come over feed cost ayam broiler

2017 ◽  
Vol 5 (2) ◽  
pp. 100-105
Author(s):  
Ferdianus Nono ◽  
Dyah Lestari Yulianti ◽  
Aju Tjatur Nugroho Krisnaningsih
Keyword(s):  
Drinking Water ◽  
Broiler Chickens ◽  
Feed Consumption ◽  
Feed Additive ◽  
Control Group ◽  
Feed Cost ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Feed Costs ◽  
The Cost

  ABSTRAK Tujuan penelitian ini adalah untuk mengetahui pengaruh dari penggunaan ramuan herbal terhadap income over feed cost  ayam broiler. Materi  yang digunakan pada  penelitian ini adalah: ayam broiler DOC. Penelitian ini dirancang dengan menggunakan Rancangan Acak Lengkap (RAL) yang terdiri dari 4 perlakuan dan masing-masing perlakuan terdiri dari 4 ulangan. Perlakuan yang digunakan dalam penelitian ini adalah penggunaan ramuan herbal dalam air minum dengan level penggunaan sebagai berikut : P0: tanpa penambahan ramuan herbal, P1:air + 10 % ramuan herbal, P2: air  + 15 % ramuan herbal, P3: air + 20% ramuan herbal. Variabel yang di amati  dalam penelitian ini adalah konsumsi pakan, biaya pakan, dan income over feed cost ayam broiler. Data yang diperoleh (income over feed cost) di analisis dengan menggunakan analisis ragam dengan rancangan Acak Lengkap (RAL). Hasil penelitian menunjukan bahwa biaya pakan tertinggi terdapat pada kelompok perlakuan P3 diikuti berturut-turut oleh P1, P2, P0 dan yang terendah adalah P0. Sedangkan pada P0 biaya pakan paling rendah karena tidak ada penggunaan ramuan herbal. Berdasarkan data penerimaan, penerimaan tertinggi terdapat pada kelompok kontrol P1 Rp 31.430,6  sedangkan penerimaan terandah terdapat pada kelompok P0 sebesar Rp 24.814,8.100 Rendahnya penerimaan dalam penelitian ini disebabkan oleh rendahnya bobot badan ayam broiler selama penelitian. Income Over Feed Cost selama penelitian yang tertinggi terdapat pada kelompok P3 (3.568), dan terendah terdapat pada perlakuan  P1 (979) P0 (1.964), P2 (1.937) karena biaya pakan lebih tinggi dari pada penerimaan.Ini berarti bahwa penggunaan ramuan herbal  dalam air minum berpengaruh sangat nyata (P< 0,01) terhadap Income Over Feed Cost. Berdasarkan hasil penelitian dapat disimpulkan bahwa penggunaan ramuan herbal sebagai feed additive  memberikan pengaruh sangat nyata terhadap IOFC ayam broiler.   Abstract The purpose of this study was to determine the effect of using herbal ingredients on income over feed costs of broiler chickens. The material used in this study was: broiler DOC. This study was designed using a Completely Randomized Design (CRD) consisting of 4 treatments and each treatment consisted of 4 replications. The treatment used in this study is the use of herbal ingredients in drinking water with the use level as follows: P0: without the addition of herbal ingredients, P1: water + 10% herbal ingredients, P2: water + 15% herbal ingredients, P3: water + 20% herbal concoctions. The variables observed in this study were feed consumption, feed costs, and income over feed costs for broiler chickens. The data obtained (income over feed cost) is analyzed using a variety of analysis with a completely randomized design (CRD). The results showed that the highest feed costs were found in the P3 treatment group followed by P1, P2, P0 and the lowest was P0. Whereas at P0 the cost of feed is lowest because there is no use of herbal ingredients. Based on acceptance data, the highest revenue was in the P1 control group of Rp. 31,430.6 while the lowest acceptance was in the P0 group of Rp. 24,814.8,100. The low acceptance in this study was caused by the low body weight of broiler chickens during the study. Income Over Feed Cost during the highest research was found in the P3 group (3,568), and the lowest was found in the treatment of P1 (979) P0 (1,964), P2 (1,937) because the cost of feed was higher than acceptance. drinking water has a very significant effect (P <0.01) on Income Over Feed Cost. Based on the results of the study it can be concluded that the use of herbal ingredients as additive feeds has a very significant effect on IOFC broiler chickens.

scholarly journals HIGHLY CONCENTRATED ENERGY SOURCE FOR BROILERS

2019 ◽  
Vol 2019 (4) ◽  
pp. 36-47
Author(s):  
Anatoly Gaganov ◽  
Zinaida Zverkova ◽  
Bella Osipyan
Keyword(s):  
Fatty Acids ◽  
Sunflower Oil ◽  
Broiler Chickens ◽  
Rapeseed Oil ◽  
Unsaturated Fatty Acids ◽  
Live Weight ◽  
Control Group ◽  
Forage Production ◽  
Rapeseed Cultivar ◽  
Feed Costs

Studies were conducted on the use of oil obtained from rapeseed cultivar 'Podmoskovnyj' selection of Federal Williams Research Center of Forage Production and Agroecology in feeding broiler chickens. The experiments were carried out on chickens cross-country "ROSS-308". They were grown in a cell battery. For the experiment, 5 groups were formed. In the start and finish periods, the control group received 2.5 and 3.3% sunflower oil. In the experimental groups, sunflower oil was replaced with rapeseed in the following amounts: the first — 1.0 and 1.0%, the second — 1.5 and 1.7%, the third — 2.0 and 2.5% and the fourth — 2.5 and 3.3%. Feeding was carried out with dry loose feed from a day old. Studies have found that rapeseed oil had less saturated and polyunsaturated fatty acids, but more unsaturated fatty acids. The amount of erucic acid was 0.20%. The digestibility of nutrients was high and practically did not differ from the control variant, as was the use of nitrogen. The inclusion of rapeseed oil in the composition of feed for broilers did not have a significant impact on the increase in live weight and feed costs. The cost of feed with increasing rapeseed oil in their composition decreased, and the efficiency of converting feed into products increased slightly. Compound feeds with rapeseed oil were not inferior in terms of the efficiency of using compound feed containing sunflower oil.

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 Influence of different sources of cuprum in compound feeds on the productivity of broiler chickens

2021 ◽  
Author(s):  
V. S. Bomko ◽  
◽  
M. S. Zakharchuk ◽  
O. M. Tytariova ◽  
◽  
...  
Keyword(s):  
Broiler Chickens ◽  
Average Daily Gain ◽  
Live Weight ◽  
Daily Weight Gain ◽  
Control Group ◽  
Effective Use ◽  
Daily Gain ◽  
Different Sources ◽  
Positive Effect ◽  
Experimental Group

Aimed to study the effective use of different doses of cuprum proteinate in the diet of broiler chickens, three groups of animals were formed with 50 chicks in each. Chickens from the 1st control group received cuprum sulphate as a part of compound feed, and animals from the 2nd and 3rd experimental groups received cuprum proteinate. The concentration of Cuprum in the feed in the 1st and 2nd groups was identical, and in the 3rd experimental group the amount of Cuprum was reduced by 25% compared to the control. During scientific and economic experiment, it was found that the replacement of cuprum sulphate with its proteinate with the same concentration in the feed has a positive effect on the average daily gain of broiler chickens, and therefore a live weight. Thus, the animals from the 2nd experimental group exceeded control analogues by 7.5% in average daily gain and by 9.4% in body mass at the end of the experiment. Reducing the concentration of Cuprum in the feed of chickens from the 3rd experimental group by 25% (the source of the microelement is cuprum proteinate) compared to the control also had a positive effect on the productivity of these animals. They exceeded control analogues in terms of average daily weight gain by 3.8%, and in terms of live weight by 5.8%. At the same time the direct correlation between animal productivity and quantity of the consumed feed was noted. Thus, broilers from the 2nd experimental group consumed more feed by 3.3% compared to control peers. The chickens from the 3rd experimental group exceeded controls by 1.5% in this index. Thus, cuprum proteinate is a more efficient source of Cuprum for broiler feed. The concentration of this microelement in the feed of these animals aged 5-21 days should be 18.2 g/t, 22–35 days - 16.8 g/t, 36–42 days - 12 g/t or 16.5 g/t on average during the experiment.

scholarly journals Nutritional Supplements Fortified with Oils from Canola, Flaxseed, Safflower and Rice Bran Improve Feedlot Performance and Carcass Characteristics of Australian Prime Lambs

Animals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 231 ◽  
Author(s):  
Hung Le ◽  
Quang Nguyen ◽  
Don Nguyen ◽  
Bunmi Malau-Aduli ◽  
Peter Nichols ◽  
...  
Keyword(s):  
Rice Bran ◽  
Average Daily Gain ◽  
Carcass Characteristics ◽  
Control Group ◽  
Feedlot Performance ◽  
Live Animal ◽  
Treatment Groups ◽  
Body Conformation ◽  
Feed Costs ◽  
Dietary Oil

This study investigated live animal performance and carcass characteristics of Australian prime lambs fed oil based polyunsaturated fatty acid (PUFA) enriched pellets in a feedlot system. The tested hypothesis was that supplementation of lambs with a variety of dietary oil based PUFA enriched pellets would enhance growth and carcass characteristics compared with the control lambs fed only with lucerne hay. Seventy-two, 6 months old White Suffolk x Corriedale first-cross prime lambs with an average liveweight (LWT) of 35.7 ± 0.9 kg were allocated to six treatment groups in a completely randomised experimental design. The treatments were: (1) control: lucerne hay only; or lucerne hay plus wheat-based pellets infused with 50 mL/kg dry matter (DM) of oils from (2) rice bran (RBO); (3) canola (CO); (4) rumen protected (RPO); (5) flaxseed (FO) and (6) safflower (SO) dietary sources. All lambs had ad libitum access to lucerne hay and clean fresh water. Supplemented lambs were fed 1 kg of pellet/head/day for 10 weeks. Feed intake, final LWT, average daily gain (ADG), body conformation and carcass characteristics of lambs in the supplemented groups were all greater than for the control group. SO lambs had the lowest ADG of 190.3 g/day. RBO and CO treatments had the lowest feed cost per unit gain of AU$3.0/kg. Supplemented lambs had similar over the hooks (OTH) incomes that were all higher than that of the control group. This empirical evidence-based data demonstrated that supplementation of lambs with RBO and CO had comparatively lower feed costs without compromising ADG, carcass characteristics and OTH income.

Livestock indicators of broiler chickens rearing when use in feeding of sweet chestnut wood extract

2021 ◽  
pp. 3-12
Author(s):  
N. P. Buryakov ◽  
A. S. Zaikina ◽  
M. A. Buryakova ◽  
M. Shaaban ◽  
A. Yu. Zagarin
Keyword(s):  
Broiler Chickens ◽  
Average Daily Gain ◽  
Live Weight ◽  
Feed Additive ◽  
Control Group ◽  
Sweet Chestnut ◽  
Daily Gain ◽  
Experimental Group ◽  
Chestnut Wood ◽  
Poultry Farming

The intensifi cation of modern industrial poultry farming as the most progressive and dynamically developing branch of agriculture aimed at raising productivity and increasing production volumes, inevitably leads to numerous problems related to poultry health. One of the most common ways to solve this problem is to use antibacterial drugs. The results of scientifi c and economic experiment on the use of the phytobiotic additive “Farmatan VSO (Butitan)” in feeding broiler chickens of cross Cobb-500 have been provided in the article. The inclusion in the poultry diet of the phytobiotic “Farmatan VSO (Butitan)” in the amount for compound feed Start 800 g/t, Growth and Finish – 400 g/t leads to increase in the live weight of broilers by 3,0 % compared to the control group. At the same time the average daily gain of live weight in the 4th experimental group was 73 g, which was by 2,8 % more than in the control group. The use of phytobiotic additives in the feeding of broiler chickens contributes to the highest livability of poultry (98,1 %). It has been found that the best indicators for feed expenditures have been noted in the 3rd and 4th experimental groups 1,47 and 1,48 kg, which were 3,3 and 2,6 % lower than in the control group. Thus, the authors have found that the highest live weight, average daily gain, livability and lowest expenditures of feed per unit of production diff ered in broiler chickens of 4th experimental group where in the compound feed antibiotic Flavomycin has been replaced on phytobiotic feed additive “Farmatan VSO (Butican)” in the compound feed Start 800 g/t, Growth and Finish- 400 g/t. Production testing of the use of “Farmatan VSO (Butitan)” has shown the high eff ectiveness of phytobiotics as a mean of replacing the feed antibiotic and improving the livestock indicators of broiler chickens rearing.

scholarly journals Efficacy of Probiotic Preparation Based on Propionic Acid Bacteria in the Diets of Broiler Chickens

2019 ◽  
Author(s):  
Tatiana Orlova ◽  
Vladimir Khaustov
Keyword(s):  
Propionic Acid ◽  
Broiler Chickens ◽  
Live Weight ◽  
Federal State ◽  
Control Group ◽  
Daily Growth ◽  
Propionic Acid Bacteria ◽  
Siberian Research Institute ◽  
Probiotic Preparation ◽  
Feed Costs

The article presents the results of testing in the diets of broiler chickens of probiotic preparation ”Propionic”, developed by the staff of the laboratory of Microbiology of the ”Siberian research Institute for cheese- making” Department of the Federal State budgetary scientific institution ”Federal Altai center of agrobiotechnology”, which includes a multi-strain culture of propionic acid bacteria species Propionibacterium freudenreichii. Scientific and economic experience was carried out under the conditions of poultry farm LLC ”Kuzbass broiler” of the Kemerovo region. For the research 2 groups of chickens-broilers (80 in each) was formed. The control group received the basic diet without probiotic. In the experimental groups to the main diet instead of feed antibiotic preparation ”Propionic” was added. In chickens of the experimental group, receiving probiotic preparation ”Propionic”, there was an increase in live weight by 2.38 %, absolute and average daily growth-by 2.42 %. The safety of probiotic-treated chickens was increased by 1.25%. Morphological and biochemical parameters of blood in chickens of control and experimental groups were within physiological norm that testifies to a healthy physiological condition of a bird. The serum of chickens treated with probiotic showed a decrease in the concentration of glucose by 2.97 % and cholesterol-by 6.38 %. The use of the probiotic preparation ”Propionic” allowed reducing feed costs per 1 kg of growth by 2.87 % and get an additional profit of 2.98 RUB from one head.

scholarly journals Effect of supplemental Mn, Zn, Fe and Cu and their interactions on the performance of broiler chickens

2020 ◽  
Vol 3 (3) ◽  
pp. 29-33
Author(s):  
M. Holubiev ◽  
T. Holubieva ◽  
M. Sychov
Keyword(s):  
Body Weight ◽  
Broiler Chickens ◽  
Body Weight Gain ◽  
Statistical Processing ◽  
Essential Elements ◽  
Control Group ◽  
Manganese Zinc ◽  
Feed Costs ◽  
Mixed Feeds

Based on the results of the analysis of feed materials on the content of micronutrient elements and conducting scientific experiments on broilers chicken, the most effective source of Manganese, Zinc, Iron and Copper in mixed feeds, which contributes to solving the problem of increasing the quality of feeding and intensifying the growth of poultry has been substantiated. The optimum source of essential elements (Mn, Zn, Fe, Cu) for broilers chicken through feeds, the level of their incorporation into mixed fodders have been experimentally determined, and their influence on productivity and feed costs per 1 kg of body weight gain have been investigated. The tasks set in the work have been solved experimentally using analytical (analysis of literature sources), zoo-technical (growth indices, feed intake) and statistical (processing of the results obtained) methods of research. The use of mixed feeds in feeding broilers chicken which contained glycinate of Manganese, Zinc, Iron and Copper making 75 % of the needs, contributes to increasing their body weight by 2.5 % and increasing the growth rate by 2.4 %. Feed costs per 1 kg of broilers chicken growth were 1.5 % lower than the young bird index of the control group.

scholarly journals EVALUATION OF EFFICIENCY OF APPLICATION OF FEED ADDITIVE ON BROILER CHICKENS

2020 ◽  
Vol 21 (2) ◽  
pp. 90-95
Author(s):  
T. R. Levytskyі
Keyword(s):  
Broiler Chickens ◽  
Hematological Parameters ◽  
Average Daily Gain ◽  
Live Weight ◽  
Feed Additives ◽  
Poultry Meat ◽  
Feed Additive ◽  
Control Group ◽  
Feed Conversion ◽  
Experimental Group

A study of the effectiveness of the use of feed additive Liaform in relation to its effect on the growth and development of broiler chickens. For research, 2 groups of broiler chickens of 55 heads (control and experimental) from 8 days of age were formed on the principle of analogues. Feeding of the control group was carried out with standard complete feed. Feeding of the experimental group was carried out with standard complete feed, in which the feed additive Liaform was added at the rate of 2 g / kg. During the experiment, the general condition of the bird, the safety of the bird, zootechnical and hematological parameters were monitored. It is established that the studied feed additive has a positive effect on the productivity of broiler chickens, improves feed absorption. As a result of the use of feed additive Liaform live weight of broiler chickens in the experimental group was 4.3 % higher compared to the control. The average daily gain of chickens in the experimental group exceeded this figure of chickens in the control group by 4,1 %. The use of feed additives helped to increase feed conversion. The use of Liaform feed increased the protein level in poultry meat

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