RESUMEN
The determination of polychlorinated biphenyls (PCBs) in water, sediment and fish samples from the Czech Republic was carried out using high resolution gas chromatography with electron capture detection. PCBs concentrations in water and sediment samples were rather low and corresponded with the findings from some prior studies. On the other hand, investigated samples of fish tissue were highly contaminated (on average 1.3-266 ng/g fat for individual PCBs), thus, a continuing contamination of fish species with PCBs was proved.
Asunto(s)
Monitoreo del Ambiente , Contaminantes Ambientales/análisis , Bifenilos Policlorados/análisis , Tejido Adiposo/química , Animales , Cromatografía de Gases , Cyprinidae , República Checa , Sedimentos Geológicos/química , Agua/químicaAsunto(s)
Bovinos/sangre , Factores de Edad , Animales , Animales Recién Nacidos , Recuento de Eritrocitos , Femenino , Hematócrito , Recuento de Leucocitos , Linfocitos , NeutrófilosRESUMEN
The calves of the Red Spotted breed and their first-calver mothers were subject to the study of total proteinemia and of the changes in protein fractions before parturition and in a ten-day period of post-partal development. The relations between these parameters were also studied. Calves up to the 10th day of life show a rise in total proteinemia whereas cows show insignificant changes. The level of albumins in calves exhibits a slight fluctuation, whereas in mothers it increased before parturition, followed by a drop which lasted until the end of the test period. alpha-globulins show a decreasing tendency in calves from the fourth day of age and have higher values than in cows. beta-globulins in cow blood serum before parturition increase. The level of gamma-globulins in calves rises until the end of the first week of life. A linear correlation dependence was found between the values of beta-globulins in cows and calves in the first two post-partal days and between the value of beta-globulin level of mothers prior to parturition and of calves at birth. In gamma-globulins the correlation dependence is always significant, starting the first day after birth.