PRODUCTIVITY AND HEMATOLOGICAL PARAMETERS OF BLOOD OF YOUNG CATTLE WHEN USING MDK FEED ADDITIVE IN DIETS

Increasing the production of animal products is an important task facing the food and agricultural industry in Belarus. One of the ways for its solution is the development and use of biologically active feed additives in the animal diet. Such additives include feed products containing living (active) yeast used in the feeding of farm animals as probiotic to optimize digestive processes, improve the livestock productivity and livability. The article presents the results of studying the effect of the MDK feed additive produced by JSC “Yeast Plant”, containing Saccharomyces boulardii living yeast, on the productivity of young cattle. During the period of scientific and economic experiment, a positive effect of the yeast-based feed additive on morpho-biochemical parameters of animal blood was established. It was also found that the use of feed additive in the diets of young cattle in the amount of 10 g per animal per day contributed to an increase in average daily gains by 17.0%, which made it possible to reduce the cost of production by 10.4% and obtain an additional profit of 39.9 rubles per animal.

1. Дрожжи как основа биологически активных кормовых добавок про- и пребиотического действия / А. Г. Лобанок [и др.] // Весцi Нац. акад. навук Беларусi. Сер. бiял. навук. – 2014. – № 1. – С. 17–22.

2. Effects of dietary yeast β-glucans supplementation on growth performance, gut morphology, intestinal Clostridium perfringens population and immune response of broiler chickens challenged with necrotic enteritis / X. Tian [et al.] // Animal Feed Sci. Technol. – 2016. – Vol. 215. – P. 144–155. DOI: 10.1016/j.anifeedsci.2016.03.009

3. Миколайчик, И. Н. Влияние дрожжевых пробиотиков на переваримость питательных веществ рациона и уровень молочной продуктивности коров / И. Н. Миколайчик, Л. А. Морозова, И. В. Арзин // Молочное и мясное скотоводство. – 2017. – № 7. – С. 28– 32.

4. Effect of yeast Saccharomyces cerevisiae supplementation on serum antioxidant capacity, mucosal sIgA secretions and gut microbial populations in weaned piglets / C. Zhu [et al.] // J. Integrat. Agricult. – 2017. – Vol. 16(9). – P. 2029–2037. DOI: 10.1016/S2095-3119(16)61581-2

5. Factors influencing ruminal bacterial community diversity and composition and microbial fibrolytic enzyme abundance in lactating dairy cows with a focus on the role of active dry yeast / O. AlZahal [et al.] // J. Dairy Sci. – 2017. – Vol. 100(6). – P. 4377–4393. DOI: 10.3168/jds.2016-11473.

6. Utilization of yeast of Saccharomyces cerevisiae origin in artificially raised calves / G. M. Alugongo [et al.] // J. Anim. Sci. Biotechnol. – 2017. – Vol. 8(34). DOI: 10.1186/s40104-017-0165-5.

7. Влияние дрожжевых продуктов на молочную продуктивность коров / Т. П. Рыжакина [и др.] // Молочнохозяйственный вестник. – 2018. – № 4 (32). – С. 36–45.

8. Reducing stress susceptibility of broiler chickens by supplementing a yeast fermentation product in the feed or drinking water / J. R. Nelson [et al.] // Animals (Basel). – 2018. – Vol. 8(10). – P. 173. DOI: 10.3390/ani8100173.

9. Effect of live yeast supplementation to gestating sows and nursery piglets on postweaning growth performance and nutrient digestibility / H. Lu [et al.] // J. Anim. Sci. – 2019. – Vol. 97(6). – P. 2534–2540. DOI: 10.1093/jas/skz150.

10. Supplementation with live yeast increases rate and extent of in vitro fermentation of nondigested feed ingredients by fecal microbiota / T. K. Kiros [et al.] // J. Anim. Sci. – 2019. – Vol. 97(4). – P. 1806–1818. Doi: 10.1093/jas/skz073.

11. Нормы и рационы кормления сельскохозяйственных животных : справ. пособие / А. П. Калашников [и др.]. – 3-е изд., перераб. и доп. – Москва. 2003. – 456 с.