Značaj neesterifikovanih masnih kiselina (NEFA) u proceni metaboličkog statusa krava u ranoj laktaciji
2020
Stanojević, Jovan | Radinović, Miodrag | Cincović, Marko R. | Belić, Branislava | Cincović, Marko R.
In early lactation, lipids are mobilized from body depots, in order to satisfy energy needs. Increased lipid mobilization leads to an increased concentration of free fatty acids (NEFA) in the blood, and consequently to an increase in the concentrations of beta-hydroxybutyrate (BHB) in the blood. Increased ketogenesis in hepatocytes leads to a large number of metabolic adaptations. The aim of this study was to examine the relationship between important metabolic profile parameters and NEFA concentration. The experiment was performed on farms of high-milk cows in Vojvodina. The experiment included 15 Holstein-Friesian cows, at the beginning of lactation, from the 1st to the 5th day after calving.The concentration was determined: NEFA, BHB, glucose, triglycerides, albumin, urea, bilirubin, AST. The relationship was examined by linear model analysis and correlation analysis.The test results show that in early lactation NEFA values in the linear model show a significant correlation with: BHB, TGL, AST and bilirubin - positive, while the correlation with glucose is negative. Albumin and urea do not show a significant linear correlation with NEFA values. These results indicate that the use of NEFA in the assessment of metabolic status can be used to a limited extent: so that it significantly represents the energy balance of cows (negative linear correlation with glucose) and functional status of hepatocytes (positive linear correlation with bilirubin and AST)
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