Feed Additive Research Articles

Exploring the potential benefits of areca nut extract in animal production: a review

Globally, the issue of antibiotic residues in agricultural products and their environments is increasingly critical, with the spread of microbial resistance becoming an urgent international challenge. Therefore, the development of ecological health feed additives is of paramount importance for advancing sustainable animal husbandry. Areca nut extract, derived from commonly available food sources, has garnered attention due to its exceptional bioactive properties. Its remarkable anti-inflammatory and antioxidant potential, along with its outstanding performance in antibacterial, antifungal, and antiviral activities, plays a crucial role in inhibiting various pathogens and protecting cells from oxidative damage. This review aims to comprehensively explore the biological activities of areca nut extract and delve into its practical application potential in enhancing animal production efficiency and promoting sustainable livestock development.The pervasive presence of antibiotic residues—including tetracyclines, sulfonamides, and quinolones—in agricultural products such as meat, milk, and eggs has raised significant concerns due to their extensive use in animal husbandry. This issue is not only a formidable challenge for food safety but also exacerbates the global crisis of antimicrobial resistance (AMR). To address these challenges, there is an urgent need for safe and sustainable alternatives to antibiotics in animal production. Among these alternatives, plant extracts have garnered considerable attention for their natural bioactive properties. Notably, areca nut extract has emerged as a promising candidate due to its diverse biological activities and potential applications in livestock production.Areca nut, derived from the dried ripe fruits, seeds, peels, and flowers of Areca catechu, is well-documented in traditional medicine sources such as the Pharmacopoeia of the People’s Republic of China (2010 Edition) for its medicinal properties, including antiparasitic effects, digestive support, and antimicrobial activity. This review focuses on the biological activities of areca nut extract, particularly its antioxidant, anti-inflammatory, antiparasitic, antibacterial, and microbiota-modulating effects, which collectively contribute to its potential role as a feed additive for enhancing animal health and performance.Key findings indicate that areca nut extract can promote livestock productivity by accelerating growth, enhancing immune responses, and reducing disease incidence. Additionally, its biological properties show potential for improving feed efficiency and mitigating the environmental footprint of livestock operations. By exploring these activities, we aim to provide theoretical insights and practical guidance for the application of areca nut extract in animal husbandry.This review highlights the promise of areca nut extract as a natural, effective, and sustainable alternative to antibiotics, offering solutions to the pressing issues of antibiotic residues and AMR. Its potential contributions to sustainable livestock production underscore the importance of further scientific exploration and interdisciplinary collaboration in this field.

Influence of complex feed additive on the microstructure of the spleen of white rats

When assessing the impact of various drugs (including feed additives), information on their effect on the proliferation of cells in the immunogenesis organs is very important. The feed additive was administered orally using an atraumatic probe in the form of a powder suspension for 90 days: the first group of rats served as a control, they were given tap water and compound feed; animals of the second experimental group received tap water with a feed additive in the form of fish meal at a dose of 800 mg / kg; and the third group - at a dose of 600 mg / kg. It was found that when using a complex feed additive (fish meal) in different doses, no significant changes in the clinical status of white rats are observed. Evaluation of the linear values of the rat spleen (length, width, thickness, diameter) showed that they were at the level of control animals. The average body weight of animals in the experimental groups was almost at the level of control rats. It was also found that the change in spleen weight was parallel to the increase in body weight of rats. This characterized their proportional growth and development. According to the results of the study of the histological picture of the spleen, it can be concluded that, despite the different doses of the feed additive, there are no visual changes in the organ at the microstructure level. The studies were conducted as part of the scientific work on the topic "Hygiene of processing biological waste by microbial synthesis."

Influence of complex feed additive on the microstructure of the spleen of white rats

Feeding calves during the dairy period is a very important and responsible moment, since it is during this period that the intensive growth and development of animals, the formation of the immune system, and the reserve for future productivity take place. Therefore, diets should be balanced not only in terms of the nutritional value of the main components, but also in terms of vitamin and mineral composition. Very often, in order for the diet to be balanced in biologically active substances, various feed additives are used, the effectiveness of which varies. Therefore, the purpose of the research was to evaluate the possibility of using and study the effect of liposomal feed additives on the growth and safety of calves. The research was conducted in one of the farms of the Leningrad region. The duration of the experiment was 60 days. During the study period, the drug "LipoLad" was introduced into the diet of experimental animals in the form of a feed additive, the animals of the control group received the main diet of the dairy period. The dynamics of changes in live weight were determined by the results of weighing calves at the ages of 2 and 4 months, in addition, the effectiveness of the drug was checked by the safety of young animals during the study period. At the end of the experiment, biochemical blood tests were performed. As a result of the conducted research, it was found that the use of liposomal feed additives has a positive effect on the growth and safety of young animals.

Effect of Plant-Derived Feed Additives on Enteric Methane Emission, Nutrient Digestibility and Immune Status of Adult Male Goats.

Ruminal methanogenesis reduces animal feed utilizing efficiency and is a potent greenhouse gas contributing to climate change. The present study aimed to study the effect of plant secondary metabolites on methane emission, nutrient digestibility and immune status of adult male goats. To fulfil the goal, 20 adult male goats (2.5-3 years of age, body weight [BW] 25.90 ± 1.46 kg) were divided into four groups of five animals. The control was fed a basal diet containing wheat straw and concentrate in a 50:50 ratio without additives. In groups T1, T2 and T3, the basal diet was supplemented with ajwain (Trachyspermum ammi) oil @ 0.06% dry matter intake (DMI), bahera (Terminalia belirica) @ 0.8% DMI and combination of ajwain oil and bahera @ 0.06% and 0.8% DMI, respectively. The DMI, nutrient digestibility, nitrogen intake, outgo and nitrogen balance were similar (p > 0.05) in all four groups. Methane emissions (g/kg DDMI) reduced (p < 0.05) by 22.16%, 23.88% and 33.49% in T1, T2 and T3 compared to control. Both cell-mediated immunity and humoral immune response significantly improved in T3 than other supplemented groups and control. In conclusion, the combination of behera and ajwain oil effectively reduced methane emissions and improved the immune status of adult male goats without affecting nutrient digestibility.

Assessment of the effect of the probiotic complex «LiquaFid» on the production performance of sows

The intensity of modern pig farming requires a continuous search for methods to maintain and improve the achieved production indicators and the high health status of animals. The use of various forms of feed additives, including probiotic complexes, can partially solve this problem. Some probiotic strains of bacteria are able to have a preventive effect on the occurrence of pathologies of bacterial or viral origin, they also have a positive effect on the course of metabolic processes of the body. In addition, the use of probiotic complexes in one form or another is less expensive than the use of specific antibacterial or antiviral agents.Our goal was to study the effect of various doses of the probiotic «LiquaFid» on the reproductive ability of sows before farrowing and during lactation. «LiquaFid» is a probiotic complex based on unique spore strains of Bacillus megaterium B –4801 and Bacillus subtilis 1-85 microbes, externally it is a well-soluble powder in water. For the experiment, 4 groups of analogues (n=34) from sows were formed. The experiment was carried out at a full-cycle enterprise engaged in industrial pig farming. The duration of the experience is 33 days. The probiotic complex was given to animals through a water supply system common to breeding stock and young animals.Based on the data obtained from the results of the experiment, it was found that the use of the probiotic «LiquaFid» to uterine livestock immediately before farrowing and during lactation reduced the incidence and severity of the course of obstetric pathologies that arose. Thus, the number of postpartum diseases decreased by 5.89% and 14.71% in the experimental groups, and the incidence of mastitis-metritis-agalactia syndrome, against the background of probiotic use, decreased several times. Due to a decrease in the manifestation of symptoms of dysgalactia, the indicator of suckling of sows has also improved. The production indicators of the obtained young animals in the experimental groups also differed in a positive way. The output of "business" piglets increased by 1.34%, 4.69% and 5.53%, while the live weight of piglets by weaning age also increased.

Paeonol Inhibits the Replication of Bovine Herpesvirus Type 1 In Vitro Through Regulating the PI3K/AKT Pathway.

The bovine herpesvirus type I (BHV-1) is a significant pathogen that poses a threat to the healthy development of the cattle industry and has a global prevalence. Paeonol is a phenolic constituent extracted from the dried root bark of peony in the buttercup family. Although paeonol has anti-inflammatory and antioxidant effects, its antiviral capacity remains unclear. Here, we conducted a cytotoxicity assay to screen the safe concentration of the paeonol using bovine turbinate (BT) cells as a model. Antiviral studies showed that paeonol inhibited BHV-1 gB gene and VP8 protein expression, and reduced cytopathic effect and viral titer. Furthermore, paeonolalso demonstrated a potent effect on BHV-1 replication with an EC50of 18.54μg/mL and a Selectivity Index (SI) of 28.64. Mechanistic analysis revealed that the PI3K/AKT pathway might be involved in the antiviral mechanism of paeonol. Molecular docking combined with western blot assay further confirmed that paeonol was able to bind stably to the active sites of PI3K and AKT proteins, and significantly inhibited the activation of PI3K/AKT pathway. Interestingly, 740Y-P (a PI3K/AKT pathway agonist) significantly attenuated the anti-BHV-1 effect of paeonol. The above experiments are the first to confirm the inhibitory effect of paeonol on BHV-1 replication, which not only adds evidence to the biological function of paeonol as an antiviral agent, but also lays the foundation for the prevention and control of this disease and the development of feed additives.

Effects of combined use of compound acidifiers and plant essential oils in feed on the reproductive performance and physiological status of Xianjv chickens.

This study investigates the effects of combined compound acidifiers and plant essential oils on the production performance, egg quality, and health parameters of Xianjv chickens. A total of 240 healthy 34-week-old Xianjv chickens were randomly divided into 5 groups and given 5 different feed additives: a control group with a basal diet, and four experimental groups with varying doses of compound acidifiers (CA) and essential oils (EO). The results revealed that the addition of compound acidifiers and essential oils did not significantly affect average daily feed intake, egg production rate, or feed-to-egg ratio. However, supplementation with CA and EO significantly improved eggshell strength, albumen height, and Haugh unit, enhancing overall egg quality. Additionally, the combination of these additives enhanced serum antioxidant capacity by increasing levels of superoxide dismutase (SOD), glutathione peroxidase (GSH-Px), and catalase (CAT), while reducing malondialdehyde (MDA) levels. It also lowered inflammatory cytokines such as interleukin-2 (IL-2) and interleukin-6 (IL-6) and improved intestinal health by enhancing digestive enzyme activities, including trypsin and lipase, in the duodenum and jejunum. The study concludes that the combined use of compound acidifiers and plant essential oils offers a promising alternative to antibiotics in poultry feed, improving egg quality and supporting better health status in Xianjv chickens. Nevertheless, careful optimization of the dosages and combinations is necessary to maximize their benefits without adversely affecting the birds' physiological balance.

Biobased functional feed additives in Asian aquaculture: Trends, impacts, and future directions

Biobased functional feed additives in Asian aquaculture: Trends, impacts, and future directions

Effect of a new prebiotic feed additive based on starch polysaccharide on dairy productivity and quality parameters of the obtained products

As is known, complete balanced feeding of animals is one of the fundamental moments in increasing the production of livestock products and their quality indicators. The use of special feed additives in feeding rations plays an undoubted role in this. The article presents the results of studies on establishing the dosage of a new prebiotic feed additive based on starch polysaccharide in the diet of red steppe cows, its effect on milk productivity and the quality of the obtained milk. According to the research results, the most optimal dosage of the additive was chosen in the amount of 80 g per head per day. When feeding this additive, an increase in milk productivity of animals, as well as milk quality indicators (fat, protein and carbohydrates) was established. Better organoleptic indicators and higher nutritional value indicators distinguished the fermented milk product produced from the milk of the experimental group of animals.

Performance of broilers supplemented with pandan leaf (Pandanus amaryllifolius roxb) water extract in drinking water

The prohibition of Antibiotic Growth Promoters (AGP) has encouraged the use of natural feed additives such as pandan leaf (Pandanus amaryllifolius Roxb) water extract. This study aims to evaluate the effect of administering pandan leaf water extract in drinking water on broiler performance. A total of 100 one-day-old broiler chicks with uniform body weight were randomly divided into 4 treatment groups, each with 5 replicates, and each replicate consisted of 5 broilers. The treatments included broilers provided with drinking water without pandan leaf extract (P0), while groups P1, P2, and P3 were given drinking water containing 3%, 6%, and 9% pandan leaf water extract, respectively. The results showed that the addition of pandan leaf water extract at levels of 3%, 6%, and 9% had no significant effect (P&gt;0.05) on feed intake, water intake, final body weight, weight gain, and Feed Conversion Ratio (FCR). It was concluded that the addition of pandan leaf water extract up to a level of 9% in drinking water does not influence broiler performance, however there is a trend of increasing feed efficiency when adding 3-6% pandan leaf water extract to broiler drinking water.

Effect of phytobiotics in the diet on zootechnical and biochemical parameters of broiler chickens

The article is devoted to the assessment of the productivity and biochemical composition of the blood serum of broiler chickens against the background of the use of phytobiotic feed additives. For the study 100 seven-day-old broiler chickens of the Arbor Acress cross were selected. According to the principle of pairs of analogues, chickens were divided into four groups. Phytobiotic "Butitan" was added to the basic diet of the I experimental group at a dosage of 500 mg / kg of feed, Oreganum was added to the diet of the II experimental group at a dosage of 200 mg/ kg of feed, "Probiocide-Phyto" was added to the diet of the III experimental group at a dosage of 1 g / kg of feed. The results of the study demonstrated that phytobiotic feed additives are not only an alternative to antibiotics, hormones and other growth stimulants, but also an effective method of forming productive qualities in broiler chickens. The use of phytobiotic feed additives is a promising area that can be recommended for introduction into poultry farming practice.

From feed to field: effect of dietary protein level and use of a blend of feed additives on gaseous emissions from growing-finishing pig slurry

The environmental impact of livestock waste has driven the need for nutritional strategies to enhance digestive efficiency in pigs, aiming to reduce nutrient excretion and associated emissions of pollutants like ammonia (NH3) and greenhouse gases (GHG). This study investigated the effects of dietary crude protein (CP) reduction by 1.5%, combined with supplementation of a dietary treatment that included feed additives and higher soluble fiber levels, on nutrient digestibility, slurry composition, and emissions across growing and finishing phases. Eighty male pigs were assigned to four different diets in a 13-week trial under a 2 × 2 factorial design: standard protein (SP) and low protein (LP) diets, with or without the dietary treatment. Key measurements included slurry composition, NH3-N and CH4 emissions, and crop yield when slurry was applied as fertilizer. The low-protein diet supplemented with additives (LPA) significantly reduced slurry pH (P ≤ 0.001) and urinary NH3-N excretion (interaction, P = 0.03), improving nutrient digestibility and lowering organic matter content in slurry (P &amp;lt; 0.05). NH3 emissions from the room and slurry pit decreased by over 38%, while CH4 emissions, although higher in LP diets, were mitigated with the LPA diet. Field application of slurry as fertilizer resulted in trends favoring sustainable wheat production, with increased yield and nitrogen use efficiency, alongside reduced CH4 emissions (P &amp;lt; 0.001). These findings underscore the potential of combined dietary strategies to mitigate environmental impacts while enhancing agricultural sustainability.

Dietary addition of compound organic acids improves the growth performance, carcass trait, and body health of broilers

IntroductionThe poultry industry constantly seeks strategies to enhance broiler growth performance and overall health. Organic acidifiers, including L-lactic acid, L-malic acid, and acetic acid, have gained attention as potential feed additives to improve animal production by modulating gut health, enhancing nutrient absorption, and supporting immune function. Despite their promising effects in other animal species, the impact of this novel compound organic acidifier on broiler performance, metabolism, and immune response has not been fully elucidated. This study aims to evaluate the effects of this compound acidifier on growth performance, serum lipid profile, antioxidant status, and immune parameters in broilers, providing insights into its potential benefits as a dietary supplement for broiler health and productivity.MethodsA total of 240 broilers were randomly divided into four groups: a control group and three treatment groups receiving 0.25%, 0.5%, or 1.0% acidifier, with six replicates of ten birds each. Over a 6-week period, various parameters were measured, including serum triglycerides, high-density lipoproteins, lysozyme, immunoglobulins (IgA, IgM), superoxide dismutase (SOD) activity, IL-2, TNF-α, and gene expressions related to lipid metabolism.ResultsOver a 6-week period, the acidifier decreased serum triglycerides and high-density lipoproteins while also enhancing growth performance. Additionally, it raised the serum levels of lysozyme, IgA, IgM, and the SOD. Additionally, IL-2 and TNF-α concentrations in the jejunum mucosa decreased. The acidifier upregulated PPARα, AMPK, FABP1 and MTTP expressions, and downregulated APOB100. Overall, the acidifier effectively improved broiler growth performance during the early development phase primarily by enhancing hepatic lipid metabolism, antioxidant capacity, and immune function.ConclusionThese results suggest that the acidifier may accelerate liver lipid metabolism in broilers by modulating the gene expression profiles involved in lipid metabolism.

Phytogenic Feed Additives as a Sustainable Alternative to Antibiotics: Enhancing Growth and Disease Resistance in Nile Tilapia (Oreochromis niloticus)

Pathogens and challenging conditions in fish farming are common problems that cause mortality and reduce growth performance. Phytogenic feed additives can support the immunity of fish and thereby improve performance, production, and disease resistance. Two experiments with Nile Tilapia aimed to evaluate the effects of a matrix-encapsulated phytogenic additive (Digestarom® P.E.P. MGE) in different feed formulations, which vary in the marine meal inclusion level (5% and 12.8%), on growth performance and resistance against Streptococcus agalactiae. Fish were stocked in a recirculating aquaculture tank system per experiment and were fed with diets with or without the phytogenic supplementation for 8 weeks (six replicates per group). After an intraperitoneal injection with a sterilized saline solution and bath immersion with S. agalactiae (5 × 106 CFU/mL), mortality of the fish was recorded for 20 days. Independent of the diet formulation, the supplementation with the phytogenic feed additive significantly improved the fish production; feed conversion ratio; immune response (mainly lactic acid dehydrogenase, differential blood cell counts, and the lysozyme activity in blood); and fish survival after the S. agalactiae challenge. Thus, phytogenic feed additives are promising strategies to improve Nile tilapia production by enhancing fish growth performance, health, and protection against S. agalactiae infections.

Mycotoxin binder for immune and intestinal histopathology ameliorations against Newcastle disease in vaccinated broilers

Background In broiler farming, vaccination against Newcastle disease (ND) is essential. Nonetheless, during the post-vaccination phase, production may be negatively impacted by mycotoxin contamination in feed. This study aimed to evaluate the effect of mycotoxin binders on immune and intestinal histopathology ameliorations against newcastle disease in vaccinated broilers with aflatoxin B1 (AFB1) and ochratoxin A (OTA) toxication. Methods A total of 20 broilers were randomly assigned into 4 groups with 5 replications i.e. (C-) broiler groups with basal feed, (C+) broiler groups with AFB1 and OTA feed contamination, (T1) and (T2) broiler groups with exposed AFB1, OTA, and toxin binders as feed additives with dose 1.1 g/kg and 1.6 g/kg feed, respectively. ND vaccination was carried out on day 7 and 21. Antibody titers were evaluated from serum samples of broiler on days 14, 28, and 35 for further hemagglutination inhibition (HI) test. Histopathology of the cecum and colon organs was evaluated using HE staining on day 36. HI test and histological scoring were analyzed using the One-Way ANOVA, followed by Duncan’s test with a p &lt; 0.05 in SPSS v.26 software (IBM Corp., Armonk, NY). Results As a result, histopathological improvement of the cecum and colon was reported based on mucosal rupture, hemorrhage and necrosis on day 35. An increase in the mean antibody titer compared to days 14 and 28 was observed on day 35, with significant changes observed in serum samples based on the C+ group, which was significantly different from the C- and T2 groups (p &lt; 0.05). Conclusions This study revealed that a 1.6 g/kg toxin binder dose in feed can increase antibody titer and histopathology of cecum and colon in broiler chickens after ND vaccination fed with mycotoxin-contaminated feed.

Pivotal Roles of Fish Nutrition and Feeding: Recent Advances and Future Outlook for Brazilian Fish Farming

The aquafeed industry evolved alongside fish farming, utilizing scientific and technological advancements to incorporate a variety of feed additives, supplements, and alternative ingredients in the nutrition and feeding of fish in aquaculture. These advances played a significant role in improving the production, health, and welfare of farmed fish. Recent research in Brazil highlighted the importance of using fish feed additives, such as vitamins, minerals, and amino acids, to ensure that farmed fish receive all the necessary nutrients for growth and health. Functional additives can enhance the immune system, boosting disease resistance and promoting the overall health of fish. Antimicrobial and antiparasitic additives help prevent and treat infections and infestations, reducing the occurrence of disease outbreaks. Additionally, some additives improve feed digestibility, leading to better nutrient absorption and reduced feed requirements. Overall, nutritional strategies are essential for optimizing fish farming practices in Brazil and globally, promoting fish health and sustainability in the industry. This review emphasizes the significance of certain additives, supplements, and ingredients strategically incorporated into experimental feeds for research in Brazilian fish farming. It also underscores the necessity for ongoing research. There is a noticeable trend towards developing more sustainable and efficient feeds, which is essential for the future of sustainable aquaculture. The goal is to minimize environmental impacts while maintaining economic viability in aquaculture operations.

Potential benefits of early-life supplementation of feed additives on the growth and health of lambs

Potential benefits of early-life supplementation of feed additives on the growth and health of lambs

Probiotics in Poultry: Unlocking Productivity Through Microbiome Modulation and Gut Health

This review explores the role of probiotics in improving productivity and gut health in poultry through microbiome modulation, particularly during early life. Gut health is pivotal to poultry performance, influencing nutrient absorption, immune function, and disease resistance. Early-life interventions target the microbiome to shape long-term health and productivity. Probiotics, live microorganisms providing health benefits, improve gut health through the competitive exclusion of pathogens, immune modulation, antimicrobial compound production, and enhancing gut barrier integrity. Applying probiotics improves growth performance, feed conversion efficiency, body weight gain, and carcass quality by promoting lean muscle growth and reducing fat deposition. For laying hens, probiotics enhance egg production and quality. These benefits are linked to better nutrient utilization, a well-balanced microbiome, and reduced gastrointestinal disorders. However, the efficacy of probiotics depends on strain specificity, dosage, and administration methods. Factors like environmental conditions, storage stability, and interactions with other feed additives also influence their effectiveness. Despite these challenges, advancements in microbiome research and probiotic technologies, such as precision probiotics and synbiotics, provide promising solutions. Future research should focus on optimizing formulations, understanding host–microbiome interactions, and leveraging new technologies for targeted microbiome management.

Effects of a multi-strain probiotic on rabbits productive traits, antioxidant defence, caecal microbiota and short‑chain fatty acids, and intestinal histomorphology.

This paper aimed to evaluate the effects of a multi-strain probiotic as natural feed additives on the productive performance, blood parameters, antioxidant defence, caecal short‑chain fatty acid profile as well as the effectiveness on the intestinal morphology and on the equilibrium modification of caecal microbiota of growing rabbits. Eighty-six-week-old Italian White rabbits were assigned into two dietary groups: the control group was fed without any additive, while the test group received a diet supplemented with a multi-strain probiotic (MS-Prob; Slab51®) at a dosage of 250 mg/kg diet. The feeding trial lasted up to 12 weeks of age. Rabbits MS-Prob diet had significantly higher daily and final body weight recording also the best of feed efficiency compared to control group. Rabbits in MS-Prob group showed improved slaughter weight and carcass dressing yield. No significant effect was found on meat protein, lipids and ash contents. Serum total cholesterol, low-density lipoprotein (LDL), high-density lipoprotein (HDL) and triglycerides decreased significantly in rabbits fed the test-diet. In rabbits fed MS-Prob, the activity of glutathione peroxidase (GPx), glutathione S-transferase (GST), catalase (CAT) and superoxide dismutase (SOD) increased significantly, whereas the level of thiobarbituric acid-reactive substance (TBARS) decreased significantly. Caecal pH, ammonia-N and total volatile fatty acids (VFAs) were not significantly influenced by dietary treatments. Conversely, VFAs molar proportions were statistically affected by diets, with higher acetic and butyric acid concentrations in caecum of rabbits fed MS-Prob. Feeding of MS-Prob reduced harmful bacterial growth (Escherichia coli, Bacillus spp., Clostridium spp.) while promoting beneficial bacteria (Lactobacillus spp., Bacteroides spp.). Moreover, MS-Prob positively influences rabbit gut histomorphology, showing higher villus height, villus width, and crypt depth. s: This study indicated that MS-Prob (Slab51®) supplementation stimulated the performance of growing rabbits and positively affected blood serum parameters, intestinal morphology, and caecal environment and microbiota.

ИСПОЛЬЗОВАНИЕ ДОБАВКИ НА ОСНОВЕ ПЕРЕРАБОТАННОЙ ПИВНОЙ ДРОБИНЫ В КОРМЛЕНИИ СЕЛЬСКОХОЗЯЙСТВЕННОЙ ПТИЦЫ

Brewer's grain is a by-product of beer production, has a high biological potential due to dietary fiber and beta-glucan, which help animals to modulate the balance and activity of microbial populations in the intestine, so its use in combination with a mineral complex can increase the productivity of poultry. The paper discusses the effect of feeding complex feed additives based on processed brewer's grains as part of complete feed on the productivity, safety and control slaughter of quail-laying quails of the Texas white breed. The experiment was carried out in the vivarium of the Federal State Budgetary Scientific Institution Krasnodar Scientific Center for Animal Science and Veterinary Medicine on Texas white laying quails from 42 days of age to the 222nd day of rearing. The content of the bird was cellular in one tier. The conditions of detention corresponded to generally accepted zootechnical standards, the groups were formed by the method of pairs-analogues of 20 animals each. The first group was the control group and received a balanced complete feed (CF). For feeding the second group, CF was used with the addition of 1.5 % of the developed complex feed additive № 1 by weight of the feed. The third group received a complete mixed feed with the addition of 1.5 % complex additive № 2 by weight of the feed. It has been established that the use of the studied additives has a positive effect on the egg production of birds, increasing the gross collection of eggs by 3.17 and 3.82 % in the groups that received the studied additives. In the experimental groups, the slaughter qualities of laying quails improved. Thus, the weight of the gutted carcass increased by 8.30 % (P≤0.01) in the second group, and by 9.08 % (P≤0.001) in the third experimental group in relation to the control one. The use of complex additives based on processed brewer's grains contributed to an increase in production profitability by 3.22 and 3.24 % and additional profit per head by 11.9 and 12.6 % in the second and third groups, respectively, compared with the control group.