Effect of Various Feed Phosphates on Biochemical Indices of Blood and Mineral Composition of Bones in Finishing Pigs

The aim of this study was to evaluate the effect of three different chemical feed phosphates on the blood biochemical indicators and the content of main minerals of bones in finishing pigs. Over a period of 85 days of fattening, monocalcium (MCP, Finnish product), dicalcium (DCP, Polish product) and calcium-sodium (CSP, Russian product) phosphates were used in fattener feeding. The feeding was based on standard mixtures of starter, grower and finisher type. Dicalcium phosphate was produced according to the new, pro-ecological technology based on phosphoric acid. The content of Ca, Na, P, solubility of P in citric acid, and the concentration of undesirable substances (As, Cd, F, Hg and Pb) were determined in feed phosphates. At the end of the fattening period, blood was collected from 36 finishing pigs (12 from each group) and the following biochemical indicators were determined in the serum: enzymatic activity of aspartate aminotransferase (AST), alanine aminotransferase (ALT), γ-glutamyltransferase (GGT), creatine kinase (CK), lactic dehydrogenase (LDH), lactic acid (LA); the concentration of total protein, albumins, glucose, urea, creatinine, content of triglycerides, cholesterol and its high density lipoproteins (HDL) and low density lipoproteins (LDL) fractions, and mineral components concentration (Ca, Cl, Cu, Fe, K, Mg, Na, P, Zn). Basic macroelement content (Ca, Mg, P) was determined in the thigh bones from 30 pigs (10 from each group). Significant differences (p < 0.05) between groups were observed only in some biochemical indicators, i.e. CK, LDH and LA. The highest content of Ca, Mg and P was found in the bones of pigs fed mixtures supplemented with DCP which indicates improved bioavailability of main macroelements from that phosphate. Feed supplements, fatteners, blood serum, bone composition

[1]  J. Yoo,et al.  Nutrient digestibility, blood profiles and fecal microbiota are influenced by chitooligosaccharide supplementation of growing pigs , 2009 .

[2]  K. Chojnacka,et al.  Effect of Dietary Yeasts Enriched with Cu, Fe and Mn on Digestibility of Main Nutrients and Absorption of Minerals by Growing Pigs , 2007 .

[3]  H. Poulsen.  Phosphorus availability in feed phosphates determined by regression , 2007 .

[4]  R. Mosenthin,et al.  Influence of feeding level on apparent total tract digestibility of phosphorus and calcium in pigs fed low-phosphorus diets supplemented with microbial or wheat phytase , 2006 .

[5]  J. S. Radcliffe,et al.  Estimating equivalency values of microbial phytase for amino acids in growing and finishing pigs fitted with steered ileo-cecal valve cannulas. , 2006, Journal of animal science.

[6]  I. Herzig,et al.  Effect of Lupine and Amaranth on Growth Efficiency, Health, and Carcass Characteristics and Meat Quality of Market Pigs , 2006 .

[7]  H. Seidel,et al.  Bioavailability of trace elements proteinates in pigs , 2005 .

[8]  M. Svoboda,et al.  Effect of Per Os Iron Lactate Supplement on Development of Haematological Profile of Piglets in the Early Postnatal Period , 2004 .

[9]  W. Eeckhout,et al.  The digestibility of three calcium phosphates for pigs as measured by difference and by slope-ratio assay , 1997 .

[10]  J. Fernández,et al.  Calcium and phosphorus metabolism in growing pigs. II. Simultaneous radio-calcium and radio-phosphorus kinetics , 1995 .