QUALITY OF COW MILK DEPENDING ON PHYSIOLOGICAL CONDITION OF BODY

Abstract

The character of changes in qualitative composition of cow milk depending on physiological state of body was studied. It was determined that during the period of obvious clinical signs of gynecological diseases associated with an increase in number of somatic cells in milk to the level of 1275,1 thousand/cm³ (experimental group), the mass fraction of lactose by 4,8 g/kg, or 9,2 %, significantly (P≤ 0,05) was less than this indicator of milk for healthy animals of control group (at the level of 183,4 thousand of somatic cells in 1 cm³ of milk); by 2,6 g/kg, or 6,9 % fat content was reduced; by 4,5 times bacterial content in milk was increased. In case of no difference in content of total protein in cow milk groups, protein fraction redistribution took place in direction of increasing the serum to the detriment of casein, that decreased in cow milk of experimental group by 3,0 g/kg and made 23 g/kg vs. 26,0 g/kg of the control group.