Open AccessThe effect of duration of the productive use on the element status of Holstein cows
Author(s) -
O A Zavyalov,
M Ya Kurilkina
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/341/1/012074
Subject(s) - lactation , zinc , wool , zoology , elemental analysis , chemistry , cow milk , biology , food science , inorganic chemistry , materials science , pregnancy , genetics , organic chemistry , composite material
The article presents data on the elemental status of highly productive Holstein cows in in terms of duration of productive use. The elemental status was studied on the composition of animal hair. Elemental analysis of samples was carried out by AES-ICP and MS-ICP. It has been established that the first lactation cows differed in minimal concentrations of As, Hg, Cd, Sr wool. With an increase in toxic elements with aging, an increase in zinc levels in the fourth lactation cows was recorded. A significant correlation was found between the sum of toxic elements (As, Hg, Sr, Cd) and concentrations of Cu (r = -0.57), Mn (r = 0.49), Se (r = 0.68) and Zn (r = -0.56) in wool. An assessment of the elemental status of cows in relation to the boundaries of the “physiological norm” revealed an increase in the number of deviations with an increase in the productive use ifrom 2 to 11.