Osadcha, Y.V., Sakhatsky, M.I. and Kulibaba, R.O. 2021. Serum clinical biochemical markers of Hy-Line W-36 laying hens under the influence of increased stocking densities in cages of multilevel batteries . Regulatory Mechanisms in Biosystems. 12, 3 (Jul. 2021), 425-429. DOI:https://doi.org/10.15421/022158.