Significant
elevation of ALP (Tables 2 and 3) in SCM milk might be
due to both mammary epithelial damage and a breach in the
blood-milk barrier selectively damaged by bacterial toxins
(Katsoulos et al., 2010).
The origin of LDH in SCM milk is
attributed to the presence of leucocytes and epithelial cells
from the udder (Mohammadian, 2011).
Katsoulos et al.
(2010) reported that the origin of elevated LDH and ALP
activity was from leukocyte and mammary epithelial and
interstitial cells damaged during inflammation, particularly
from disintegrated leukocytes.