Effects of season and infection on composition of mastitic milk of the friesian cattle in Sudan

Abstract

Clinicla mastitis as measured by California mastitis tests (CMT), has a significant effects on casein, lactose, total solids,  chloride, Koestlerm; value and ash. Similarly, mastitis sample that collected during summer showed significant effects on caseins, whey proteins and ash, total proteins and fat. Staphylococcus aureus, isolated from clinical mastitis, has a significant effect on chloride and lactose. However, S. aureus, isolated during summer, from mastitic cows, showed significant effects on caseins, chloride, whey proteins, acidity and fat per cent