Proteins, isoleucine, lysine and methionine content of bovine, porcine and poultry blood and their fractions

Studies carried out in bovine blood proteins pointed out that they are excellent sources of lysine (Lys), but deficient in isoleucine (Ile) and methionine (Met). The purpose of this investigation was to determine and compare the content of proteins, Lys, Ile and Met in whole blood, red cells and plasma of bovine, porcine and poultry species. Blood from the different species were centrifuged for their separation in plasma and red cells. Proteins, Lys, Ile and Met content in blood and their fractions were determined. Results showed that protein content in bovine and porcine blood and plasma were significantly higher than those for poultry. Red cells and plasma proteins from poultry posses superior levels of Ile than bovine and porcine red cells and plasma. Lys content was high for all blood and fraction species. Met was low in all the species under study.