Currently, animal husbandry is one of the fastest growing agricultural subsectors worldwide. This requires an increase in feed production, which in turn will require an increase in the base of feed ingredients, mainly protein. One of the current global problems in animal husbandry is the shortage of feed protein. Therefore, the feed industry should be aware of the trends, problems and opportunities existing in the field of protein feed production.The aim of the study is to consider alternative protein sources that can partially or completely replace the usual protein in animal feed.The search and analysis of literature was carried out using the following Internet resources RSCI, PubMed, Web of Science, Science Direct, Scopus, e Library, Google Scholar (Google Academy) for the period 2020-2024.Results. Alternative protein sources not only fill the gap in protein requirements, but also pave the way for sustainable animal husbandry. Non-traditional protein products used in animal feed are expanding rapidly, and the emerging market for alternative protein is attracting investment. Alternative protein sources are essential to meet the growing demand for protein-rich feed ingredients, so the feed production sector needs to find alternative sources based on research results.

Russia is more dependent on imports of feed additives, or components for the local production of feed additives, since domestic production available on the market cannot satisfy domestic needs. The number of feed additives registered of feed additives registered in Russia includes is 3680 items, among them 1451 (39.43%) were developed by the Russian companies. The vast majority of feed additives circulating on the Russian market is 2229 items (60.84%), developed abroad. For the period from 2019 to 2023, 1034 types of feed additives were registered, which is 726 (70.21%) types of foreign feed additives, and 308 (29.79%) types of domestic ones, most of them are in the form of powder 552 items (53.38 %). This article summarizes the main results of analysis the feed additives market in Russia, in particular, the determination of the number of registered feed additives, their types and from the release over the past 5 years from 2019 to 2023.

Recent years have witnessed a growing interest in the role of peptides in animal nutrition. These peptides are typically formed from ingested proteins in the gastrointestinal tract, but the types of resultant peptides can vary greatly with the physiological conditions of the animals and the composition of the diets. Therefore, feed manufacturers add hydrolysates obtained by enzymatic or bacterial hydrolysis of proteins from an animal or plant source to obtain peptides aimed at increasing the availability of easily digestible protein or peptides with specific biological activity, such as antioxidant or antimicrobial agents. The processing of agricultural crops, animals, poultry and fish in the food industry results in the formation of large amounts of secondary waste in solid or liquid form. These wastes are a good source of cheap proteins, which when used as raw materials in the hydrolysis process, are converted from useless waste into valuable ones. Enzymatic hydrolysis of proteins produces peptides and free amino acids, which are absorbed much faster than the original protein, due to the presence of specialized transporters in the intestinal mucosa. Also, depending on the type of protease, the peptides formed as a result of hydrolysis have beneficial biological effects on animal health. This article discusses the most important hydrolysates used in feed animal and their availability for absorption, as well as the bioactivity and safety of bioactive peptides for animal health.

The main disadvantages of using soybean oil extraction waste as a raw feed material are its high contents of fiber, fat, and anti-nutritional factors. Therefore, several processing methods such as extrusion and hydrolysis are used to overcome these disadvantages and increase the availability of high-quality proteins to animals from this by-product. This study is concerned with the hydrolysis of extruded soybean meal in the presence of bacterial alkaline proteases. The effects of various process parameters were investigated to determine the optimal process parameters for hydrolysis in terms of the total free amino acid and amine nitrogen contents. The experiment included two sets of parameters that were selected for comparison: the temperature and pH in ranges of t 45–50 °C, pH 8–11, compared to the temperature and pH ranges of t = 40–45 °C and pH 7–9, using three enzyme/substrate ratios (1:10, 1:20, and 1:30). The protein hydrolysate was stored for three months after it was treated with two different preservatives (sorbic acid and thymol). Based on the results, it was found that the total free amino acid content was higher when the temperature range was 45–50 °C, the pH range was 8–11, and sorbic acid was used as a preservative.

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.