Metabolički profil rasplodnih bikova simentalske pasmine

The levels of biochemical parameters in the blood serum of Simmental service bulls were studied. The research was conducted on twelve bulls at the age of four to seven. The blood was taken on four occasions by needle biopsy from the vena jugularis externa. In the samples of blood serum, the activities were specified of alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), creatine-kinase (CK) and concentrations of the total proteins, albumins, calcium and magnesium, triglycerides and cholesterol. Since there are no data concerning bulls, the results obtained were compared with data from literature on cows. The levels of total proteins, albumins, GGT and CK in the serum of the examined bulls are higher than in cows, while the levels of AST and magnesium are lower. The levels of triglycerides, cholesterol and calcium are almost equivalent. The differences observed indicate the necessity of establishing referential rates for biochemical parameters in bulls as opposed to cows. The results obtained will be useful in routine diagnostics as the metabolic profile of Simmental bulls.U radu su istražene razine biokemijskih pokazatelja u krvnom serumu rasplodnih bikova simentalske pasmine. Istraživanje je provedeno na 12 bikova u starosti od četiri do sedam godina. Krv je uzimana u četiri navrata punkcijom jugularne vene. U uzorcima krvnoga seruma određene su aktivnosti alanin-aminotransferaze (ALT), aspartat-aminotransferaze (AST), gama glutamil-transferaze (GGT), kreatinske-kinaze (CK) i koncentracije ukupnih proteina, albumina, kalcija, magnezija, triglicerida i kolesterola. Budući da ne postoje podatci koji se odnose na bikove, dobiveni rezultati uspoređeni su s podatcima iz literature koji se odnose na krave. Razine ukupnih proteina, albumina, GGT i CK u serumu istraživanih bikova više su nego u krava, dok su razine AST i magnezija niže. Razine triglicerida, kolesterola i kalcija su gotovo jednake. Uočene razlike upućuju na prijeku potrebu uspostavljanja referentnih vrijednosti biokemijskih pokazatelja za bikove, neovisno o onima za krave. Postignuti rezultati bit će korisni u rutinskoj dijagnostici kao metabolički profil bikova simentalske pasmine

The metabolic profile of Simmental service bulls

The levels of biochemical parameters in the blood serum of Simmental service bulls were studied. The research was conducted on twelve bulls at the age of four to seven. The blood was taken on four occasions by needle biopsy from the vena jugularis externa. In the samples of blood serum, the activities were specified of alanine aminotransferase (ALT), aspartate aminotransferase (AST), gamma glutamyl transferase (GGT), creatine-kinase (CK) and concentrations of the total proteins, albumins, calcium and magnesium, triglycerides and cholesterol. Since there are no data concerning bulls, the results obtained were compared with data from literature on cows. The levels of total proteins, albumins, GGT and CK in the serum of the examined bulls are higher than in cows, while the levels of AST and magnesium are lower. The levels of triglycerides, cholesterol and calcium are almost equivalent. The differences observed indicate the necessity of establishing referential rates for biochemical parameters in bulls as opposed to cows. The results obtained will be useful in routine diagnostics as the metabolic profile of Simmental bulls. Key words: metabolic profile, service bulls, blood seru