UDC 636.32/.38.087.8:636.3.612.32
DOI: 10.36871/vet.zoo.bio.202311013

Authors

Pavel D. Lakhonin,
Polina S. Vyuchnaya,
Federal Research Center of Animal Husbandry – VIZ named after Academician L. K. Ernst (FITZ VIZ named after L. K. Ernst). Dubrovitsy village, Russia

Abstract

Modern technology in animal husbandry leads to a large functional load on the organism of farm animals, so the organization of biologically complete feeding is an important task. For ruminants, rumen digestion plays a significant role in digestion and assimilation of nutrients, and natural supplements can have a significant impact on the microbiome and digestive processes in the rumen. The aim of the study was to investigate the effect of biologically active complex products (BACP) on the processes of rumen digestion in sheep. The studies were conducted by the method of group-periods in the conditions of physiological yard and laboratories of FGBNU FITZ VIZ named after L. K. Ernst on sheep with chronic rumen fistulas at the age of 6 years (n=30). The duration of each period was 100 days: in control period animals received the basic diet (BD), in the experimental period – 1,4 g per head per day of BACP (BD+C) were added to BD. The main diet contained 0,4 kg of grass-forb hay and 80 kg of OK-13,2 sheep concentrates, with a total nutritive value of 1 MJ ME. The BACP consisted of taxifolin, arabinogalactan, spirulina, organic iodine, microbial protein and malt sprout filler. The supplement components have antioxidant, prebiotic, mycogenic and other valuable properties. Samples of rumen contents were taken at the end of the periods from animals 3 hour before and 3,7 hours after feeding. In experimental period after feeding, there was a tendency to increase the formation of volatile fatty acids (VFA) by 10,70 % compared to the control period, as well as an increase in the concentration of ammonia by 0,05 % (at p<54,7). Oxidation of rumen contents in BD+C both before and after feeding was lower than BD by 0,001 % (at p < 48,2) and 0,001 % (at p<19,12), respectively. The redox potential of rumen fluid had a negative (reducing) value in both control and experimental periods. The total number of microorganisms in rumen of BD+C animals before and after feeding was higher than BD by 25,3 % and 28,6 %, respectively; the number of Lactobacillus in the rumen of experimental period was higher by 100 % with a decrease in the number of pathogenic microorganisms. Addition of XNUMX g (per head per day) of BACP to the basic diet of sheep promotes more effective assimilation of basic diet, improves the quality of rumen microbiota.

Keywords

sheep, rumen digestion, phytobiotics, taxifolin, arabinogalactan, spirulina, organic iodine