The densities and viscosities of synephrine hydrochloride and octopamine hydrochloride aqueous solutions were determined. Apparent molar volumes, apparent molar volume at infinite dilution, viscosity B-coefficients and hydration number were calculated, and it was found that synephrine hydrochloride acts as a better structure maker than octopamine hydrochloride in aqueous solutions. The densities of the investigated salts were measured in aqueous d-fructose solutions, and the corresponding apparent molar volumes of transfer at infinite dilution were determined. Its taste behavior was discussed based on the calculated values for apparent specific volume and intrinsic viscosity. Molecular dynamics simulations and radial distribution functions were applied in order to understand the nature of the interactions and water structuring in the studied systems. The change in taste behavior was observed with increasing concentration of the cosolute, and it was found that the addition of sugar increases the bitterness of the solution. From a molecular docking study on the bitter receptor TAS2R38, the strongest interactions for synephrine-HCl were noted causing the most bitter taste.

In this research 245 cows are included. They are daughters of ten sires and all of them realized 548 lactations in the period 2000 and 2003. Data used originated from two cattle farms, "Backa" and "Pobeda" that are on government property "Krivaja". During lactation lasting approximately 333 days cow produced 4521 kg of milk yield with 181 kg fat yield and 4,00% fat percentage in standard lactation. The values for heritability are estimated by using interclass correlation. It was low for duration of lactation (0,017) and for fat percentage (0,037). Also, it was medium for milk yield (0,227) and fat yield (0,214).The average values for heritability in the standard lactations were 0,317 for milk yield and 0,281 for fat yield. In other words, those are medium hereditary features. The values for heritability were low for fat percentage (0,031), or low hereditary feature.

In this research 245 cows were included. They are daughters of ten sires, and they realized 548 lactations in the period from year 2000 to 2003. Data were used from two cattle farms, "Backa" and "Pobeda" that are located on government property "Krivaja". In this research influences of systematic factors like farm, year, season or lactation have been included. Breading values are evaluated for all qualities (milk yield, fat yield, fat percentage and persistency of milk production). Sires are ranked based on average milk yield of his daughters.

In this research 245 cows are included. They are daughters of ten sires, and all of them realized 548 lactations in the period 2000 and 2003. Data were used from two cattle farms, "Backa" and "Pobeda" that are on government property "Krivaja". At first hundred days, cows produced approximately 1770 kg milk yield, and during the period of first two hundred days, cows produced about 3173 kg milk yield. The milk yield in monthly controls which were made approximately at 29,4 days, was 399 kg, which means 11,73 kg per day. Persistency of milk production was done by index R2:1 and the average amount of milk was 79,57%.