Metabolism in dairy calves depending on the level of crezacin in diets

The studies examined the effect of different dosages of the feed additive “Krezacin” in diets on the metabolism of calcium and phosphorus in calves during the dairy growing period. The results of the experiment indicated that diet with this supplement in optimal quantities helps improve the metabolism of minerals: calcium and phosphorus in their body. It has been established that when using the feed additive “Krezacin” when feeding young animals at a dose of 15 mg/kg calf weight calcium retention in the body increased by 10.15%, and phosphorus – by 6.21%, which has a beneficial effect on the growth and development of calves when they are raised during the dairy period.

Introduction. Successful rearing of calves during the milking period depends on the organization of feeding, based on the achievements of modern zootechnical science. It is important to consider that calves during the milk growing period need sufficient amounts of minerals, necessary to ensure their optimal deposition in the body, and an indicator of the biological value of any feed or diet is the degree to which calcium and phosphorus are used in the body. Therefore, studying the metabolism of these mineral elements is very necessary, especially in connection with the effect of various feed additives on the animal’s body, having the properties of supporting immunity, antioxidant protection, enzyme activity, enhancing metabolism and increasing productivity. However, the effectiveness of using the feed additive “Krezacin” in the organization of adequate feeding of dairy calves has not yet been sufficiently studied. The influence of its various dosages in the diet of dairy calves has not been studied on the exchange of calcium and phosphorus in their body.

Materials and methods. Against the background of scientific and economic experience at “Niva” LLC of the Republic of Mordovia a balance experiment was carried out on young cattle according to the generally accepted VIZH method. For experience from each experimental group three heads of identical calves of the black-and-white breed were selected. During the exchange experiment, the same conditions of feeding and keeping animals were performed, as in scientific and economic experience. The study examined the effect of different dosages of the feed additive “Krezacin” in diets on the metabolism of calcium and phosphorus in calves during the dairy growing period.

Results and conclusions. The data obtained in the experiment showed that the diet with this additive in the optimal amount helps improve the metabolism of minerals: calcium and phosphorus in their body. Installed that when using the feed additive "Krezacin" when feeding young animals at a dose of 15 mg/kg calf weight calcium retention in the body increased by 2.41 g or 10.15%, and phosphorus by 0.73 g or 6.21%, respectively, which has a beneficial effect on the growth and development of calves when growing them during the dairy period.

1. Batanov S. D., Berezkina G. Yu., Kilin V. V. Influence of mineral additive "Stimulus" on blood biochemical parameters. Scientific notes of the Kazan State Academy of Veterinary Medicine named after N. E. Bauman. 2014. V. 220. Pp. 38-42.

2. Varakin A. T., et al. Organic selenium and yeast probiotic in the diets of lactating sows. Proceedings of Nizhnevolzhskiy agrouniversity complex: science and higher vocational education. 2021. No 4 (64). Pp. 152-161.

3. Varakin A. T., et al. The influence of the feed additive “Krezacin” on the metabolism of replacement pigs. Proceedings of Nizhnevolzhskiy agrouniversity complex: science and higher vocational education. 2023. No 1 (69). Pp. 332-338.

4. Varakin A. T., et al. Productivity and quality of milk of lactating cows of the black-and-white breed in connection with the optimization of mineral nutrition. Efficient livestock farming. 2023. No 5 (187). Pp. 40-42.

5. Varakin A. T., et al. The effect of a new feed additive on the productivity and physiological parameters of dairy cows. Proceedings of Nizhnevolzhskiy agrouniversity complex: science and higher vocational education. 2021. No 1 (61). Pp. 222-231.

6. Varakin A. T., et al. Hematological parameters of calves with the introduction of selenium-containing additives into diets. Proceedings of Nizhnevolzhskiy agrouniversity complex: science and higher vocational education. 2021. No 3 (63). Pp. 209-218.

7. Gayirbegov D. Sh., et al. Chemical composition and energy value of bull meat depending on the type of feeding. Problems of development of the regional agro-industrial complex. 2017. V. 29. No 1 (29). Pp. 71-74.

8. Gorlov I. F., et al. The influence of non-traditional feeds in the diet of laying hens on their economic and biological indicators. Proceedings of Nizhnevolzhskiy agrouniversity complex: science and higher vocational education. 2023. No 2 (70). Pp. 330-338.

9. Duborezov V. Increasing the efficiency of using the diet of dairy cows. Compound feed. 2017. No 2. Pp. 83-84.

10. Epifanov V. G., et al. The influence of the feed additive “Belkoff-M” on the milk productivity of Holsteinized first-calf heifers. Proceedings of Nizhnevolzhskiy agrouniversity complex: science and higher vocational education. 2014. No 2 (34). Pp. 93-98.

11. Zoteev V., Simonov G., Simonov A. BVMK with zeolite tuff in the diet of bulls. Compound feed. 2013. No 8. Pp. 49-50.

12. Kutuzova A. A., et al. Practical guide to resource-saving technologies and methods for improving hayfields and pastures in the Volga-Vyatka region. Moscow, 2014. 75 p.

13. Mungin V. V., et al. Increasing egg production and quality of quail eggs. Poultry farming. 2016. No 7. Pp. 31-34.

14. Simonov G. A., Gayirbegov D. Sh., Fedin A. S. Effect of the drug crezooferan on the growth energy of replacement laying hens. Effective animal husbandry. 2013. No 5 (91). Pp. 22-23.

15. Simonov G., Magomedrv M., Aligazieva P. Feeding cattle with a complete mixture is more effective. Compound feed. 2013. No 10. Pp. 63-64.

16. Simonov G., Gayirbegov D., Fedin A. Ferrosil increases the productivity of laying hens. Compound feed. 2015. No 4. P. 62.

17. Simonov G., et al. The influence of a complex preparation on the productivity of laying quails. Compound feed. 2016. No 9. Pp. 93-94.

18. Simonov G. A., et al. Effective feeding of highly productive dairy cows at different physiological stages. Efficient livestock farming. 2018. No 1 (140). Pp. 28-29.

19. Simonov G. A., et al. The influence of mineral supplements on the level of total protein and its fractions in the blood serum of cows. Bulletin Samara State Agricultural Academy. 2022. No 1. Pp. 73-79.

20. Simonov G. A., et al. Biological value of a complex mineral supplement for lactating cows. Proceedings of Nizhnevolzhskiy agrouniversity complex: science and higher vocational education. 2022. No 2 (66). Pp. 238-247.

21. Tyapugin E. A., et al. Quality of cows’ milk under various milking technologies. Problems of development of the regional agro-industrial complex. 2015. T. 23. No 3 (23). Pp. 75-78.

22. Tyapugin E. A., et al. Comparative assessment of technological factors influencing the production and quality of milk under various milking technologies. Reports of the Russian Academy of Agricultural Sciences. 2015. No 3. Pp. 50-53.

23. Khovatov N. E., et al. Effective feed additive in the diets of replacement gilts. Proceedings of Nizhnevolzhskiy agrouniversity complex: science and higher vocational education. 2023. No 1 (69). Pp. 441-447.

24. Varakin A. T., et al. Hematological parameters of boars-producers at use of a natural mineral additive in a diet. International Journal of Innovative Technology and Exploring Engineering. 2019. V. 9. I. 1. Pp. 3837-3841.

25. Simonov G. A., et al. Efficiency of growing crossbreed bull-calves of the mountain cattle with Russian polled breed. E3S Web of Conferences. From Inertia to Develop: Research and Innovation Support to Agriculture: International Scientific and Practical Conference. “IDSISA 2020". 2020. P. 02004.