Influence of feeding level on the formation of milk productivity of dry cows


  • Ia. І. Pivtorak Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies Lviv, Ukraine https://orcid.org/0000-0002-4388-4526
  • О. О. Mil Stepan Gzhytskyi National University of Veterinary Medicine and Biotechnologies, Lviv, Ukraine
Keywords: dry cows, milk productivity, microflora, feeding level, live weight, weak fatty acids, metabolic processes.

Abstract

The materials of the publication demonstrate the results of scientific research conducted on Simmental cattle in the farm “Pchany-Denkovych” Stryy district of the Lviv region. The research is based on optimizing the normalized feeding of cows during the start-up period. The diets of experimental animals include low, medium, and high levels of energy nutrition according to detailed standards. The study was conducted on three groups of Simmental cows with eight heads each. The analysis of the obtained results showed that the different levels of energy nutrition of experimental animals did not significantly affect the hematological parameters; their level was within physiological norms for healthy animals. Estimating the intensity of metabolic processes in the body of dry cows was carried out based on the contents of the scar. There was a probable increase in the number of amylo- and cellulolytic bacteria, the number of which prevailed (the second and third groups) in comparison with the control by 1.42–2.32 and 2.32–2.53 million/ml. A similar pattern was observed for the number of proteolytic bacteria. The increase in these populations of microorganisms contributed to their enzymatic activity, which led to a probable increase in the number of LVH, which are precursors of milk fat. According to the indicators of live weight gain during the dry season, animals of the second and third groups had an advantage. Physicochemical parameters of milk were also better in these groups of cows; the higher the level of nutrition, the higher the fat, protein content in milk. A similar analogy is observed for the dynamics of the live weight of calves, which is directly proportional to the level of feeding cows during the dry season. For four months, the calves of the experimental groups had higher growth energy (6.7–10.5 % compared to the control). The control over the level of milk productivity of cows after calving was carried out according to control milk yields, which showed that the hopes for lactation in the experimental groups were 7.2–8.0 % higher than in the control group. This is because the animals of the experimental groups, due to the higher level of feeding according to detailed standards in the dry season, deposited more nutrients in the body and thus provided a higher level of milk productivity. Therefore, the conducted research gives grounds to recommend the farm to use high and medium levels of energy nutrition for cows during the dry season.

References

Borshch, O. O. (2021). The influence of global warming on the productivity and quality of cow’s milk. Ukrain-ian Journal of Veterinary and Agricultural Sciences, 4(3), 22–27. DOI: 10.32718/ujvas4-3.04.

Fedorovych, E. I., Fedorovych, V. V., Semchuk, I. Y., Fedak, N. M., Ferenents, L. V., Mazur, N. P., Bodnar, P. V., Kuziv, M. I., Fedorovych, O. V., Orihivskyi, T. V., Gutyj, B. V., Slusar, M. V., Petriv, M. D., & Fyl, S. I. (2021). Genetic potential and breeding value of animals – an essential component of the genetic progress in dairy cattle. Ukrainian Journal of Ecology, 11(2), 306–312. DOI: 10.15421/2021_115.

Fedorovych, Y., Fedorovych, V., Bodnar, P., Fyl, S., Dymchuk, A., & Orikhivskyj, T. (2021). Relative vari-ability of phenotypic traits and indicators of milk productivity of cows. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Ag-ricultural Sciences, 23(95), 101–107. DOI: 10.32718/nvlvet-a9515.

Korzh, O. V., Popsui, V. V., & Opara, V. O. (2015). Dy-namika zmin zhyvoi masy ta hematolohichni pokaznyky telychok symentalskoi porody do 6-misiachnoho viku zalezhno vid tekhnolohichnoi skhemy hodivli. Naukovyi visnyk Lvivskoho natsion-alnoho universytetu veterynarnoi medytsyny ta bio-tekhnolohii imeni S. Z. Hzhytskoho, 17(3(63), 212–218. URL: http://repo.snau.edu.ua/xmlui/handle/ 123456789/3769 (in Ukrainian).

Masiuk, D. M. (2021). The enzyme activity dynamic relationship with the content of structural polypeptides of enterocyte membranes in cattle fetal. Ukrainian Journal of Veterinary and Agricultural Sciences, 4(2), 3–6. DOI: 10.32718/ujvas4-2.01.

Mazur, N. P., Fedorovych, V. V., Fedorovych, E. I., Fedo-rovych, O. V., Bodnar, P. V., Gutyj, B. V., Kuziv, M. I., Kuziv, N. M., Orikhivskyi, T. V., Grabovska, O. S., Denys, H. H., Stakhiv, N. P., Hudyma, V. Yu., & Pakholkiv, N. I. (2020). Effect of morphological and biochemical blood composition on milk yield in Sim-mental breed cows of different production types. Ukrainian Journal of Ecology, 10(2), 61–67. DOI: 10.15421/2020_110.

Mylostyvyi, R., Lesnovskay, O., Karlova, L., Khmeleva, O., Кalinichenko, O., Orishchuk, O., Tsap, S., Begma, N., Cherniy, N., Gutyj, B., & Izhboldina, O. (2021). Brown Swiss cows are more heat resistant than Hol-stein cows under hot summer conditions of the conti-nental climate of Ukraine. J Anim Behav Biometeor-ol, 9(4), 2134. doi: 10.31893/jabb.21034.

Mylostyvyi, R., Sejian, V., Izhboldina, O., Kalinichenko, O., Karlova, L., Lesnovskay, O., Begma, N., Maren-kov, O., Lykhach, V., Midyk, S., Cherniy, N., Gutyj, B., & Hoffmann, G. (2021). Changes in the Spectrum of Free Fatty Acids in Blood Serum of Dairy Cows during a Prolonged Summer Heat Wave. Animals, 11(12), 3391. DOI: 10.3390/ani11123391.

Pidpala, T. V., Ostapenko, O. M., & Yasevin, S. Ye. (2018). Intensyvni tekhnolohii v molochnomu skotarstvi: monohrafiia. Mykolaiv: Mykolaivskyi natsionalnyi ahrarnyi universytet. URL: http://dspace.mnau.edu.ua/jspui/handle/123456789/5472 (in Ukrainian).

Slivinska, L. G., Shcherbatyy, A. R., Lukashchuk, B. O., & Gutyj, B. V. (2020). The state of antioxidant protec-tion system in cows under the influence of heavy metals. Regulatory Mechanisms in Biosystems, 11(2), 237–242. DOI: 10.15421/022035.

Abstract views: 6
PDF Downloads: 0
Published
2022-05-07
How to Cite
Pivtorak, I., & MilО. (2022). Influence of feeding level on the formation of milk productivity of dry cows. Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies. Series: Agricultural Sciences, 24(96), 139-143. https://doi.org/10.32718/nvlvet-a9619