Relationships among malondialdehyde, milk compositions, and somatic cell count in milk from bulk tank

Abstract

The goals of this study were to identify associations of malondialdehyde (MDA) with milk compositions and somatic cell counts (SCC) in milk from bulk tanks. Milk samples were collected from small-holder dairy farms (n = 133) belonging to the Mae-On dairy cooperative, Chiang Mai Province, Thailand. After routine testing for bulk tank SCC (BMSCC), milk samples were tested for milk compositions and milk MDA, respectively. To normalize the BMSCC data, they were transformed to scores of BMSCC. Results from Pearson's correlation coefficients showed that any pairs of BMSCC, milk fat, milk protein, and milk lactose were associated to each others (P<0.05). However, milk MDA was significantly associated only with BMSCC. In conclusion, milk malondialdehyde is associated only with somatic cell counts.