Plasma Metabolites in Fattening Pigs

Institute of Cryobiology and Food Technologies, BG – 1407 Sofia, Bulgaria


TSVETKOVA, V., 2014. Plasma metabolites in fattening pigs. Bulg. J. Agric. Sci., 20: 238-242


The experiments are carried out with castrated male pigs fed individually from 20 kg to 100 kg live weight. The animals from the control group (12 pigs) are fed with standard soybean-corn feedstuff and these from the experimental group (12 pigs) – with soybean-barley mixture. The pigs are fed with rations equal in content of protein and energy. The objective of the investigation is to establish the level of the main plasma metabolites, participating in the cholesterol transport and the possibility to affect them in fattening pigs by the effect of barley included in the feed content. The blood plasma is analyzed for content of total protein, cholesterol, phospholipids, triacylglycerols and lipoprotein classes: chylomicrons, low density lipoproteins, very low density lipoproteins and high density lipoproteins.
The obtained concentrations of the main plasma metabolites in the control and experimental group according to the biological norms and show a presence of a full value synthesis and secretion of liver proteins, phospholipids, cholesterol, triacylglycerols and lipoproteins. The main lipoprotein classes in the blood plasma of both animal groups are in the physiological optimum range and don’t show differences obligated to the feeding factor. The ratio high density lipoproteins/ low density lipoproteins for the two groups increases from 0.81 for 20 kg up to 1.04 and 1.18 for 50 kg and reaches values from 1.45 and 1.57 for 100 kg animals, for the control and experimental group respectively.

Key words: proteins, lipids, cylomicrons, low density lipoproteins, very low density lipoproteins, high density lipoproteins
Abbreviations: HMG-CoA reductase - hydroxyl–methyl-glutaryl–СоA reductase, CM - cylomicrons, LDL - low density lipoproteins, VLDL - very low density lipoproteins, HDL - high density lipoproteins, TG - triacylglycerols, LCAT - lecithin-cholesterol-acyltransferase

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