Broiler Chicken Feed Research Articles

Desempenho econômico e zootécnico de frangos de corte submetidos à restrição alimentar quantitativa

Nutrition today accounts for approximately 75% of broiler production costs due to the large variety of ingredients contained in poultry feed. Commercial chicken breeds have been genetically selected for rapid weight gain, among other characteristics, thereby stimulating their voracious feeding behavior. However, this greater feed intake has not seen an attendant increase in the digestion capacity of the birds’ digestive system, thus interfering with feed conversion. The objective of this study to compare the performance of feed conversion, mortality rates, daily weight gain, carcass rejections, carcass and parts yields and the cost of ad libitum feeding of broiler chickens with those achieved through quantitative feed restriction (Cobb broiler diet table and 10% less than recommended in the table). The treatments were tested in three consecutive batches on a poultry farm with three aviaries. The results obtained indicated that quantitative feed restriction improves feed conversion and reduces daily weight gain and mortality rates, but affects neither carcass rejection rates nor carcass and parts yields. As for production costs, the kilogram of live chicken was 5.69% lower among birds that received controlled feed, following the diet recommended for the breed, and 7.38% in birds that received a 10% quantitative feed restriction compared to the Cobb broiler diet table. The results of this study indicate that the use of quantitative feed restriction programs, despite the lower daily weight gain of broiler chickens, can offer advantages because lower mortality rates and enhanced feed conversion compensate for this loss, thus significantly reducing production costs.

Сорго – альтернативная зерновая культура в мясном птицеводстве

Realization of the genetic potential of farm animals and poultry is possible only with the use of complete diets. Along with the traditional plant components of feed, alternative agricultural crops that are capable of high yields in adverse environmental conditions, such as drought and salinity, are of great help in forage production and at the same time have a high nutritional value. The article presents the results of studies on the use of grain sorghum as a component of combined feed for broiler chickens in the conditions of the Saratov region. In experimental feeds, sorghum was replaced by cereals ‒ barley and wheat, which are traditional components for feed mixtures. After a preliminary study of the biochemical composition of the feed components, prototype feed samples were compiled, in which the nutritional value was determined by the main indicators - protein, fat, fiber, ash, BEV, the exchange energy was calculated and the fractional composition of the protein was studied - albumins, globulins, glutelins, prolamins. After analyzing the combination of all indicators of the feed value of the studied compound feeds, sample N 3 was selected, in which grain sorghum was used instead of barley, with optimal characteristics, and recommended for further use. Keywords: SORGHUM, COMPOUND FEED, BROILER CHICKENS, METABOLIC ENERGY, FEED VALUE, PROTEIN, PROTEIN FRACTIONS

ВЛИЯНИЕ ПИВНОЙ ДРОБИНЫ НА ПРОДУКТИВНЫЕ ПОКАЗАТЕЛИ ЦЫПЛЯТ-БРОЙЛЕРОВ КРОССА "РОСС-308"

The research on brewing waste and its use as feed ingredients, in particular for feeding poultry, is a current trend in animal husbandry. Finding new opportunities to reduce the cost of livestock products is an important issue, because The high cost of food is currently becoming a serious problem for consumers. For this reason, studying the possibility of using barley grains in feeding broiler chickens of the Ross-308 cross at JSC PR Mikhailovskoye in the Prigorodny district of North Ossetia-Alania turned out to be very timely. During the experiments, the main production indicators were studied. The results were studied and processed in detail. We determined the effect of brewer’s grain on the health of chickens, on feed intake, their growth and development, and, mainly, on their slaughter performance. According to the approved methodology, 4 groups of day-old chickens were formed. All young animals met the requirements for exterior and constitution. One of them became the control, and the rest became the experimental ones. The first group of broilers was fed the usual feed mixture, which is used on the farm for young animals according to age, compiled according to the current VNITIP standards. The experimental groups were administered barley grains in different quantities - 5 and 7% of the dry matter of the feed. In addition, for these groups, the food was also enriched with the probiotic premix Cellobacterin-T, which replenishes the low amino acid content. The results of the experiments showed that chickens that received 7% barley grains from the dry matter of feed enriched with Cellobacterin-T had better growth and development compared to both the control and experimental groups that received 5% brewers grains, and the one that received feed mixture enriched with premix, without spent grains. Such results give every reason to assert that barley grain is an effective feed ingredient that has a beneficial effect on the body of chickens and stimulates growth and development.

Effectiveness Of Manual Material Handling Tools For Chicken Feed Transporting Rails And Online Marketing Websites

This research aims to solve problems in the process of feeding broiler chickens on increasing the skills of chicken farmers. The mentoring activities carried out include assisting chicken farmers in using production technology assistance and demonstrating if there is damage or errors in operating Manual Material Handling (MMH) tools or difficulties in managing the website. The results of this research are: 1) 90% respondents understand how to operate Manual Material Handling tools; 2) 90% respondents understand the components of Manual Material Handling; 3) 95% of respondents strongly agree with the material duration in operating manual material handling; 3) 95% participant evaluation results after participating in training for the category of using MMH to Help Broiler Chicken Production answered strongly agree.

Use of lupine with bischofite in feeding of broiler chickens

Currently, feed and mineral substances of non-traditional origin are widely used in feeding animals and poultry. The effectiveness of using new mineral complexes and non-traditional feed ingredients is constantly being studied. In this regard, the study of mineral additives and non-traditional feeds, as well as the eff ectiveness of their use in feeding animals and poultry is an urgent problem. The purpose of the work was to study the use of lupine together with bischofite in feeding of broiler chickens. In order to achieve the purpose of research two scientific and economic experiments were carried out on broiler chickens of the cross Ross 308 to study the infl uence of an alternative feed protein (lupine variety Deco) and a natural mineral additive (bischofi te) on the quality of the resulting products. The duration of each scientific and economic experiment was 37 days. It was found in the results of the first scientific and economic experiment that the use of lupine of the variety Deco and the natural mineral additive bischofite in the diets of broiler chickens in the feed composition made it possible to obtain additional profi t in the amount of 197,64–1345,38 rubles per 120 heads of broilers. The level of profi tability in the 1st experimental group of broiler chickens was higher by 1,01 abs.%, in the 2nd experimental group by 6,72 abs.% and in the 3rd experimental group by 4,03 abs.% compared to the control group. In the control group this figure was 19,77 %. It was established in the results of the second scientific and economic experiment that the use of variety lupine Deco and the natural mineral additive bischofi te in the diets of broiler chickens contributed to additional profi t in the amount of 1171,51 rubles per on 120 heads of broilers. The level of profitability in the experimental group was higher by 5,56 abs.% compared to the control group.

Indicators of tasting evaluation of broiler meat quality under the influence of feed factor

Poultry meat occupies a large share in human nutrition. The issues of the taste of broiler chicken meat as a food product under the infl uence of feeding, in our opinion, have not been suffi ciently studied. The purpose of the research was to study the indicators of tasting evaluation of the quality of broiler chicken meat under the infl uence of the feed factor. Four series of studies were carried out on the organoleptic evaluation of the quality of meat of broiler chickens of the cross Sibiryak 2C that eceived feed with various feed ingredients. Groups of broiler chickens were formed at one day old according to the principle of analogues. Experimental feeds were fed from one day to 42 days of age. In order to determine the organoleptic evaluation of the quality of meat of broiler chickens under the infl uence of the feed factor, the poultry was slaughtered at 42 days of age, followed by tasting of the broth and boiled meat. In the fi rst experiment, the use of camelina presscake made it possible to obtain high-quality broth and meat (the overall score was 0,2–1,0 points higher than the control). In the second study, fl axseed presscake was used in feeding broiler chickens. A positive relationship was noted between the introduction of 15 and 20 % fl axseed presscake and the indicators of organoleptic evaluation of the quality of boiled meat, but the higher the percentage of input of the feed protein ingredient, the lower the evaluation of meat quality according to a set of indicators. During the third experiment on the use of various vegetable oils, a positive eff ect was discovered from the increased introduction of rapeseed, rubsen-seed, linseed or soybean oils into the compound feed. It was found according to the results of the fourth research that the introduction of 25 % rapeseed presscake or 25 % rapeseed fl our into compound feed allowed us to obtain broth and meat with the highest tasting scores.

Efficiency of Utilization of Metabolizable Energy for Carcass Energy Retention in Broiler Chickens Fed Maize, Wheat or a Mixture

The study aimed to quantify carcass fat and protein retention, and the efficiency of carcass energy utilization (Kre) resulting from feeding broiler chickens diets containing wheat, maize or mixtures of both as the major cereal ingredient. The apparent metabolizable energy (AME) of the four cereal samples was determined in adult cockerels. There was a linear (p < 0.001) increase in AME with increasing amounts of maize within the four cereal mixtures, with analyses indicating that the AME of maize was 1.4 MJ/kg greater than that of wheat. A second bioassay with growing chickens was used to determine Kre in each cereal, measured as carcass fat and protein from 7 to 21d age. Increasing proportions of maize resulted in linear increases in carcass fat and energy retained from fat (p < 0.001). However, the carcass protein and energy retained from protein did not follow the same pattern as fat (p = 0.121), but rather decreased numerically (L = 0.032). The Kre tended (p = 0.060) to increase with greater proportion of maize in a linear fashion (L = 0.009). Although AME values of cereals were confirmed to be additive, this could not be confirmed for Kre. This data can be used for optimizing energy utilization models for growing broilers.

Microbiological analysis of broiler chicken slaughter products using “Subtiform” probiotic and establishment of safety and technological process criteria

Feeding broiler chickens a probiotic biopreparation containing bacteria of the genus Bacillus subtilis and Bacillus licheniformis leads to improved feed digestion, increased productivity, and immune status, as well as reduced insemination by opportunistic and pathogenic microorganisms of slaughter products. It enhances the level of prevention and treatment of various poultry diseases. The purpose of the work is to carry out a microbiological analysis of the slaughter products of broiler chickens after drinking the probiotic biological preparation “Subtiform” in doses of 0.5 g, 2.0, and 4.0 g per 10 dm3 of water. The material (major pectoral muscle and internal organs) was examined by bacteriological methods. It was established that the content of MAFAM in the control and experimental groups 1, 2, and 3 of the chilled slaughter products of broiler chickens for 1, 3, and 5 days of storage at a temperature of 0–4 °С was within the limits of standards (no more than 1.0×104 CFU/d). It was established that when broiler chickens were given 4.0 g/10 dm3 of water, the MAFAM content for one day of poultry meat storage decreased by 10.4 % (Р < 0.05); on the third day of storage, it decreased by 9.6 % (Р < 0.05); at the beginning of the fifth day of storage, the decrease was, respectively, by 11.3 % (Р < 0.01) compared to the indicators of the control group. The content of MAFAM in offal, in particular in the heart of broiler chickens, was reduced in experimental group 3 by 36.9 % (Р < 0.001); in the liver – by 33.6% (Р < 0.001); in the muscular part of the stomach – by 27.2 % (Р < 0.001); in the spleen and lungs, there was also a decrease in the content of MAFAM in experimental group 3, respectively, by 20.2 % (Р < 0.01) and 23.6 % (Р < 0.01) compared to the indicators of the control group of broiler chickens. It was established that opportunistic pathogenic microorganisms, in particular BGCP, bacteria of the genus Proteus, and pathogenic microorganisms, in specific bacteria of the genus Salmonella, bacteria of the species Staphylococcus aureus, Listeria monocytogenes in 25 grams of the large pectoral muscle of broiler chickens and internal organs (heart, spleen, liver, the muscular part of the stomach and lungs) were not detected. According to the results of the conducted research, an adverse effect of the probiotic biopreparation at a dose of 4.0 g/10 dm3 of water on the development of microorganisms in the large pectoral muscle and internal organs of broiler chickens was established. Therefore, the probiotic “Subtiform” at a dose of 4.0 g/10 dm3 of water during the drinking of broiler chickens can be recommended to increase productivity and obtain safe slaughter products. The practical value of the work consisted of establishing the microbiological indicators of poultry slaughter products after drinking probiotics, as well as establishing safety criteria and the technological process.

Growth performance, meat quality and hematological parameters of broiler chickens fed safflower seed.

The aim of the current study was to determine the effects of dietary supplementation of safflower seed (SS) on the growth performance and hematological parameters of broiler birds along with the physicochemical, textural and sensory attributes of chicken meat. A total of 200 male chickens (7-days-old) were distributed into 5 groups (40 chickens in each) with 5 replicates of 8 chicks in a 42-day experiment. Each group was allocated to one of 5 dietary treatments, i.e., 0, 2.5, 5, 7.5, and 10% SS. The experimental diets were formulated for starter (7 to 21 days) and finisher (22 to 42 days) phases. Inclusion of SS in the diet improved growth performances in treatment groups between 7 and 42 days. The highest and lowest body weights were observed at the 5% SS and 0% SS levels, respectively. The physicochemical attributes of breast and thigh meat were found (P > 0.05) except for crude fat. The crude fat was significantly (P < 0.05) increased with increasing levels of SS in the diet. The inclusion of SS in the diet did not negatively impact the textural properties, i.e., hardness, cohesiveness, springiness, gumminess, chewiness, and shear force of breast and thigh meat. There was no significant difference in the sensory parameters of cooked chicken meat with increasing levels of SS in the diet. The results demonstrated a significant (P < 0.01) improvement in hematological parameters in the blood samples of broiler chickens fed diet supplemented with various levels of SS for five weeks. These findings suggest that, SS may be used as an oil seed for broiler chicken feed.

Investigation on adaptations of broiler chickens to high dietary free amino acid levels in nitrogen utilisation and plasma amino acid concentrations

ABSTRACT 1. A reduction in crude protein (CP) in feed for broiler chickens necessitates elevated free amino acid (AA) levels to meet the requirement of each AA. This study investigated adaptations following a change to diets with increasing free AA concentrations and possible reasons for the limitation caused by the inclusion of more free AA. 2. Male Ross 308 broiler hatchlings received a starter diet (164 g CP/kg containing 80 g/kg soy protein isolate (SPI)) until d 7. From d 7–22, birds received a diet almost identical to the starter diet or two other diets, where 50% or 100% of digestible AA in SPI were substituted with a free AA mixture. Birds were allocated to metabolism units located in the same barn to determine performance (n = 7 units) and blood traits (n = 14 birds). Total excreta collection was performed on d 7–8, 8–9, 9–10, 11–12, 14–15 and 21–22. Blood samples were collected on d 7, 8, 9, 11, 14 and 21. 3. Average daily weight gain (ADG) and average daily feed intake (ADFI) was unaffected at 50% AA substitution but decreased at 100% AA substitution on d 7–22 (p ≤ 0.001). The 100% substitution led to a decline in ADG and ADFI consistently on all days (p ≤ 0.037) except on d 11–12. A 50% AA substitution resulted in lower ADFI on d 7–8 and 14–15 (p ≤ 0.032). Nitrogen utilisation efficiency (NUE) was on a level of ~ 0.74 and was only affected by treatment up to d 11–12 (p ≤ 0.008). Concentrations of 10, 9, 8, 10 and 4 plasma free AA were affected on d 8, 9, 11, 14 and 21, respectively (p ≤ 0.037). 4. Following a change to diets containing high levels of free AA, NUE and free AA concentrations in the circulation became more balanced within 3 to 7 d. The results suggested that peptide-bound and free AA did not cause different NUE, particularly 3 and 7 d after the diet change.

Productive qualities of broiler chickens at different levels of soluble fraction of fish waste hydrolyzate in feed

The growth and development of broiler chickens at different levels of the soluble fraction of fish waste hydrolyzate in mixed fodder was studied. The processing of commercial fish is accompanied by the formation of secondary resources, the scope of practical application of which is quite wide (fish proteins are a unique natural material used in various industries, but not fully utilized. Wastes resulting from fish processing are a source of valuable nutritional and biologically active substances, and thus serve as raw materials for various products, including dietary supplements. In order to determine the optimal rate of introduction of the soluble fraction of fish waste hydrolyzate into broiler chicken feed, a scientific and economic experiment was conducted that lasted 42 days. The research was conducted on broiler chickens of the Cobb-500 cross. The difference in the feeding of the experimental groups was that broiler chickens of the first (control) group received complete feed, which corresponded to the nutritional standards in all periods, and the additional introduction of a soluble fraction of fish waste hydrolyzate was: The 2nd experimental group received 0.2 % of the feed additive; poultry of the 3rd and 4th experimental groups consumed feed containing 0.4 and 0.6 % of the experimental additive. It was found that an increase in the content of the soluble fraction of fish waste hydrolyzate in the diet by 0.6 % contributes to an increase in live weight of chickens by 266 g, or 10.25 %, and a decrease in feed costs per 1 kg of live weight gain by 3.8 % compared to the control. It was found that during the growing period, broiler chickens of the 4th group had the highest absolute live weight gain of 2823.8 g, which is 2.63 %, 8.32 % and 10.36 % higher than in the 3rd, 2nd experimental and control groups. The use of feed with a soluble fraction of fish waste hydrolyzate in the feed with a content of 0.6 % increased the average daily weight gain for the entire period of the experiment by 7 g, or 11.63 %, and absolute weight gain by 265.2 g, or 10.36 %, respectively.

Mathematical justification of the optimal rate of selenium introduction into mixed feed for broiler chickens

In recent years, many countries worldwide have been revising the existing standards for introducing trace elements in mixed feed for high-performance crosses and poultry breeds, taking into account new scientific data. This also applies to Selenium, which is recognized as an indispensable biotic ultramicroelement according to the modern classification. The norms for introducing selenium into mixed feed for broiler chickens have specific differences and range from 0.1 to 0.5 mg/kg of feed, which are recommended in different countries and at other times. The reason for the disagreement is probably that the experiments were conducted under different conditions, against the background of different diets, on different poultry crosses, and using other selenium-containing compounds. In addition, the norms of selenium additives recommended by foreign and domestic scientists in mixed feed for broiler chickens are not always supported by mathematical calculations, and, in our opinion, they should be evaluated as indicative, requiring further justification and clarification depending on the regional characteristics of poultry feeding. Two scientific and economic experiments were conducted to determine the optimal rate of introducing selenium into mixed feed for broiler chickens, which lasted 42 days each. The study was conducted on broiler chickens of the Coob 500 cross. Selenium was additionally introduced into mixed feeds for broiler chickens of the experimental groups in doses of 0.2, 0.3, 0.4, and 0.5 mg/kg. Poultry in the control group did not receive Selenium supplementation. Statistical processing of experimental data obtained in two scientific and economic experiments, using graphical, variance, and regression analysis methods, allows us to conclude that the optimal dose of Selenium administration in mixed feed for broiler chickens should be considered 0.3 mg/kg. Feeding broiler chickens during the growing period of mixed feed enriched with Selenium in this amount contributed to a likely increase in their live weight in the first experiment by 7.8 % (Р &lt; 0.001), in the second by 5.1 % (Р &lt; 0.01), compared to the control group. Higher doses of Selenium (0.4 and 0.5 mg/kg) in mixed feed, as well as a lower dose (0.2 mg/kg), caused less intensive growth and lower live weight of broiler chickens of other experimental groups, compared to young animals fed mixed feed with the addition of selenium 0.3 mg/kg.

Production and use of glucose-maltose-amino acid feed additive from cereal grains

One of the important issues in domestic livestock farming is the production of high-quality and environmentally friendly poultry products. Currently, technology and technological means have been developed for processing cereal grains into easily digestible sugars and amino acids using elements of nanotechnology such as cavitation, ionization and fermentation. Technical documentation has been developed for this technology. The technology was introduced at the Berdskaya poultry farm LLC in the Novosibirsk region. A distinctive feature of this technology is that the resulting new glucose-maltose-amino acid feed additive, which has high digestibility and biological value. Easily digestible sugars: glucose, maltose and amino acids obtained using new technology at low temperatures are better digested and absorbed by the poultry’s body. The purpose of the work was to analyze the production and use of glucose-maltose-amino acid feed additive from cereal grains and its use in feeding of boiler chickens. Testing of the new feed additive was carried out at the Berdskaya poultry farm LLC on broiler chickens of the 4-line cross Sibiryak. It was found as a result of research of a new glucose-maltose-amino acid feed additive when feeding broiler chickens that its introduction into the diet of broiler chickens had a positive impact on economic performance. Thus, in the control group the profi t was 7919 rubles, and in the experimental group it was 10 034 rubles. The level of profitability in the experimental group was higher than in the control group by 5,7 abs.%. Feeding broiler chickens by the new feed additive helped reduce the content of lead and cadmium in muscle tissue, so this product can be used for dietary nutrition.

Golden mussel shell (&lt;i&gt;Limnoperna fortunei&lt;/i&gt;) flour contaminated with cadmium as a calcium source for broiler chickens

The objective of this study was to evaluate the effects of golden mussel flour (GMSF) contaminated with increasing rates of cadmium (Cd) as a replacement for limestone as a Ca source, in broiler chicken feed from 14 to 42 days of age. A total of 60 animals were assigned to four treatments (inclusion rates of Cd: 6.94, 14.55, 22.40, and 30.00 mg Cd kg-¹) with five replications in a completely randomized design. At 42 d, blood samples were collected to evaluate serum concentrations of aspartate amino transferase (AST), alanine amino transferase (ALT), gamma glutamyl transferase (GGT), total bilirubin, Ca, P, and Cd. After slaughter, tissues were collected to evaluate Cd concentration in bone parameters. Growth performance of broiler chickens and Cd content in the breast meat were not affected by the inclusion rates of Cd in the GMSF. However, there was an effect of Cd in GMSF on the concentration of Cd in the skin, liver, bones, feathers, and serum; ALT; and total bilirubin. Bone flexibility had a quadratic response to increasing inclusion rates of GMSF; serum Ca concentration increased linearly and there was no effect on serum P concentration. Concentrations of Cd in GMSF above 20 mg kg-¹ caused high Cd contamination in broiler tissues. Therefore, it was concluded that Cd concentrations above 6.94 mg kg-¹ in broiler diets caused high Cd concentrations in meat and organs that are above those permitted for human consumption

Microstructural analysis of meat and internal organs of broiler chickens using a probiotic biological product

Probiotic preparation containing bacteria of the genus Bacillus subtilis and Bacillus licheniformis used for feeding broiler chickens to improve feed digestion, nutrient absorption, increase immune status and productivity, and for the prevention and treatment of various poultry diseases. The purpose of the study is to conduct histological tests of broiler chicken slaughter products when they were administered a probiotic biologic medical product in doses of: 0.5 g, 2.0, and 4.0 g per 10 dm3 of water. The material was examined by the histological method. It was found that the muscle fibres in the pectoralis major are of the same type, evenly directed, the cytoplasm of muscle fibres is moderately eosinophilic, uniformly light pink, and minor layers of adipose tissue are found between the bundles of muscle fibres. The morphological architectonics of the heart muscle are preserved, cardiomyocytes are homogeneous and have a clear orientation. The microstructure of the liver of broiler chickens is unchanged: hepatocytes are collected in the same type of groups; the central veins are desolate; the cytoplasm of these cells is homogeneous, clear, and pink; the nuclei are weakly basophilic. In the spleen, the follicular structure is formed, leukocytes are diffusely placed at different stages of differentiation; vessels in significant numbers, thickened, of different calibre. The cuticle of the muscular part of the stomach contains the epithelial layer, the volume part of the connective tissue base layer is revealed; muscle fibres are located under the mesenchymal base of the cuticle. Lungs by morphological structure have bronchial tubes throughout the structure, which contain blood cells. According to the results of the conducted studies, a beneficial effect of a probiotic biological product at a dose of 4.0 g/10 dm3 of water on the morphology of the pectoralis major and internal organs of broiler chickens was established. Therefore, a probiotic at a dose of 4.0 g/10 dm3 of water during the drinking of broiler chickens can be recommended to increase productivity and produce safe slaughter products. The practical significance of the results obtained is to determine the features of the effect of feeding poultry with different doses of probiotics on the microstructure of its slaughter products, which is important for obtaining the best effect from its use

ЭФФЕКТИВНОСТЬ ПРИМЕНЕНИЯ КУРКУМЫ И ДИГИДРОКВЕРЦЕТИНА ПРИ ВЫРАЩИВАНИИ ЦЫПЛЯТ-БРОЙЛЕРОВ

The article presents the results of scientific and production experience in assessing the economic feasibility of including natural antioxidants based on turmeric and dihydroquercetin in feed for broiler chickens in order to increase poultry productivity. It was shown that the economic effect of including turmeric in the compound feed at a dosage of 500 g/t of feed (new option 1) amounted to 1091.55 rubles, and the combined use of 500 g/t of turmeric with 10 g/t of dihydroquercetin feed (new option 2) and provided an economic effect of 743.92 rubles. (at 2023 prices). Which, in terms of 1000 heads of broilers, amounted to 10,495.67 rubles and 7,153.08 rubles, respectively

Use of a semi-concentrated amino acid additive in the feeding of repair young broiler chickens

Use of a semi-concentrated amino acid additive in the feeding of repair young broiler chickens

The effectiveness of using Volgafish fish concentrate in the diets of broiler chickens

The presented studies were conducted in the period from 2021 to 2023 in the conditions of the center "Safety and Effectiveness of feed and additives" of the Volgograd State Agrarian University on the ROSS-308 bird. To perform the study, four groups were formed in three repetitions: control, I-experienced, II-experienced and III-experienced with 40 heads each. The bird was raised from the daily to 37-day age with outdoor maintenance. The chickens were kept on a deep litter (sawdust), the feeding technology, watering and microclimate parameters meet the requirements of the ROSS-308 cross. The chemical composition of fish concentrate exceeds fishmeal in terms of crude protein content by 2.15%, crude fat – by 0.25%, crude ash – by 0.28%, which suggested the replacement of fishmeal in broiler chicken feeding programs for this feed product. The use of Volgafish fish concentrate in the composition of compound feeds for broiler chickens, replacing 50.00%, 75.00% and 100.00% fishmeal, allowed to increase the average daily growth of poultry by 1.38-5.18%, and the live weight of individuals by 37 days of age by 1.32-5.01%.

THE IMMUNE MODULATING POTENTIAL OF SUPPLEMENTING COBB500 BROILER CHICKENS WITH CRICKET AND SHRIMP CHITIN AND CHITOSAN

This study explored the potential impacts of cricket-derived chitin and chitosan on the immune systems of Cobb500 broilers. One hundred and fifty broiler chicks of the Cobb500 strain were randomly assigned to any one of the five dietary groups in order to accomplish this. While the first set of birds (group 1) were only served the basal diet with no supplementation, the second to fifth sets of birds (groups 2 to 5) were served a diet supplemented with 500 mg/kg of the following: cricket-chitin, cricket-chitosan, shrimp-chitin, and shrimp-chitosan. The bursa and spleen were weighed relative to the body weight, and qPCR was used to determine the spleen's relative expression of toll-like receptor 4 (TLR4), toll-like receptor 15 (TLR15), interleukin-1β (IL-1β), and inducible nitric oxide synthase (iNOS) genes. After 42 days of dietary cricket-chitin, the bulk of the index immunological organs increased (P&lt;0.05). At day 21, TLR4, TLR15, IL-1β, and iNOS expression were unaffected by chitin and chitosan, but at day 42, they were down-regulated (P&lt;0.05). However, during day 21, dietary shrimp-derived chitosan enhanced (P&lt;0.05) the relative expression of TLR4, TLR15, and IL-1β, whereas the expression of TLR15 was lowered (P&lt;0.05) but that of TLR4 was increased by cricket-chitin and shrimp-chitin. According to our findings, feeding broiler chicks with 500 mg/kg of shrimp chitosan and cricket-derived chitin can positively boost their immunity.

Utilisasi Probiotik Cair Asal Fermentasi Black Soldier Fly Larvae (Hermetia illucens) terhadap Performa Ayam Broiler

This study aimed to evaluate the utilization of liquid probiotics from black soldier fly larvae (BSFL) fermentation on broiler chickens' performance. A total of 250 male broilers strain Cobb CP 707 were given 5 treatments of probiotics in drinking water with 5 replications using a completely randomized design. The treatments in this study were P0=commercial broiler feed+drinking water without probiotics, P1=commercial broiler chicken feed+ drinking water with 1 mL L-1 commercial probiotic, P2=commercial broiler chicken feed+water with 1 mL L-1 probiotics from BSFL fermentation, P3=commercial boiler chicken feed+water with 3 mL L-1 probiotics from BSFL fermentation, and P4=commercial broiler chicken feed+water with 5 mL L-1 probiotics from BSFL fermentation. The results showed that BSFL fermentation probiotics were not significantly different on broiler chicken performance. Income over feed and chick cost (IOFCC) in addition to 5 mL L-1 in drinking water was more efficient in saving feed cost and the highest performance index during the broiler rearing. In conclusion, the utilization of BSFL fermentation probiotics in drinking water gave the same effect on broiler chicken performance as the other treatments yet the IOFCC and broiler chicken performance index were more advantageous.&#x0D; Key words: black soldier fly larvae, broiler, performance, probiotics