Affiliation:
1. St. Petersburg State University of Veterinary Medicine
2. Immanuel Kant Baltic Federal University
Abstract
One of the most important trends in the development of modern agriculture is the policy of replacing or completely replacing antibiotics and chemical antimicrobial agents in animal diets.An alternative to feed antibiotics is a complex of feed additives - probiotics, prebiotics, toxin sorbents, phytobiotics. Only a comprehensive program of their use can effectively replace feed antibiotics in the diets of farm animals and poultry. It is relevant and promising to use components of plant origin as feed additives that can increase the productivity of livestock, stimuate reproduction, and improve the consumer properties of products.The purpose of the research was to search for biologically active substances in brown algae, which are potential stimulators of nonspecific resistance in poultry. The objects of research were fresh algae Fucus vesiculosus and Ascophyllum nodosum, collected by hand from rocky areas in the coastal zone of the White Sea (near the village of Nyukhcha, Kondostrov Island, Onega Bay) during low tide from August to October 2023. During the research, the biomass of algae Fucus vesiculosus (F. vesiculosus) and Ascophyllum nodosum (A. nodosum) was studied. In these biomassages, the content of crude protein, lipids, moisture, as well as fucoidan polysaccharides and alginates in the samples was studied.Thus, in the course of the research, fucoidan polysaccharide was identified in brown algae of the White Sea (fucus vesiculosa and ascophyllum), which is a natural stimulator of a nonspecific immune response, contributing to an increase in the number of bifidobacteria in the intestines of animals. The presence of fucoidan in high concentrations makes brown algae a promising basis for the production of veterinary drugs and feed additives.
Publisher
Saint-Petersburg State University of Veterinary Medicine
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