Changes of macromineral and trace element concentration in the blood of ewes during lactation period

Abstract

The aim of the present research was to determine the changes in macromineral and trace element concentrations in ewes’ blood during the lactation period. Thirty-six Travnik pramenka ewes at the average age of 3–5 years were included in research and they were evaluated at three stages of lactation: early stage (40 ± 5 days of lactation), medium stage (80 ± 5 days of lactation) and late stage (120 ± 5 days of lactation). In ewes’ blood concentrations of macroelements (Ca, P, K, Na, Mg) and trace elements (Fe, Cu, Zn, Mo, Co, Se, Cd, As) were determined. The average concentrations of macroelements and trace elements in the blood of ewes during lactation were mostly within the reference values. Se concentrations in blood were close to the deficient ones, while concentrations of Cd and As were negligible. Concentration of Ca in blood was the lowest in the early lactation stage, higher in the late stage, and the highest in the medium stage (88.25 mg/l, 96.43 mg/l and 103.43 mg/l, respectively). A significant increase in the concentrations of Mg, Co and Cd and a significant decrease in the concentrations of Na, Fe, Cu, Zn, Mo and Se were found in blood with lactation progress. Significant correlations between the studied parameters were found, especially between macroelements (Ca : K, P : Na, K : Na, K : Mg). Positive correlations were found between some macroelements and trace elements (Ca : Co, Ca : Cd, K : Co, Na : Zn, Na : Se) and between trace elements (Fe : Cu, Cu : Zn, Cu : Mo, Cu : Se, Zn : Se, Mo : Se and Co : As). Negative correlations were found between Ca and Cu, Ca and Mo, P and Cd, K and Cu. Obtained results may help in monitoring the nutritional status and health of ewes during the lactation period, providing a clearer idea related to the supply of macrominerals and trace elements to ewes. Besides, results indicated that the environment of the farming area was not polluted with toxic elements.

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“…In correspondence, Cinar et al (2010) did not observe any changes in packed cell volume, haemoglobin levels, and red blood cells after Cd administration of 60 mg/kg of feed for 42 days compared with the control group. The conflicting results might be related to different conditions such as genotype, antioxidative status, immunity, and age (Antunovic et al 2021). cal necrotic spots in the liver.…”

Dynamics of Hematobiochemical and Clinical Patterns in Ewes in Different Reproductive Stages Under Controlled Nvironmental Conditions

“…During the transition from nonpregnancy to postpartum, blood calcium levels may decrease due to the high demand for calcium during fetal skeletal development and milk production. Conversely, phosphorus levels might increase to support the increased metabolic needs of the ewe (Antunović et al 2021). Magnesium is involved in various enzymatic reactions and plays a crucial role in muscle function and energy metabolism.…”

The occurrence and risk assessment of bisphenol A and its analogues - bisphenol B, F, S, Z and AF in the urine of lactating sows

“…synthetic pollutant is bisphenol A [BPA; 2,2-bis(4hydroxyphenol)propane], considered a chemical capable of disrupting the endocrine system. BPA is a primary bisphenol, mainly used in the plastic industry as epoxy resins, food and drink cans, baby bottles, thermal receipt paper, personal care Humans as well as animals are exposed to many pollutants such as pesticides, heavy metals, dioxins or biphenyls, which have the potential to adversely affect their health status or production efficiency (Rose et al 2005;Antunovic et al 2021;Ketta et al 2021). One of the most widespread Supported by the EU, project NutRisk Centre; CZ.02.1.01/0.0/0.0/16_019/0000845.…”