Der Einfluß endogener Faktoren auf den Asche-, Kalzium-, Magnesium-, Kalium-, Natrium-, Phosphor-, Zink-, Eisen-, Kupfer- und Mangangehalt der Schweineborste

Abstract

77 sows were used in a trial bristles were taken from these animals (a) on the 84th day of pregnancy, (b) on the day of gestation and (c) on the 42nd day of lactation. The average ash content of the bristles was 1.23%. It was not found to be influenced by gestation. Before gestation the Ca content of the bristles rose significantly while the Na and K content decreased (P less than 0.05). The Mg, P and Cu content of the bristles increased during lactation whereas the F content fell significantly. The concentrations of all other elements did not change significantly in the phase of pregnancy and during lactation.