kesenkaş, harun ege üniversitesi - ziraat fakültesi - süt teknolojisi bölümü, İzmir, Turkey , kinik, özer ege üniversitesi - ziraat fakültesi - süt teknolojisi bölümü, İzmir, Turkey , yerlikaya, oktay ege üniversitesi - ziraat fakültesi - süt teknolojisi bölümü, İzmir, Turkey , özer, elif ege üniversitesi - ziraat fakültesi - süt teknolojisi bölümü, İzmir, Turkey

Determination of Relation between Somatic Cell Count and Malondialdehyde Amount in Goat Milk

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Objective: In this research, the levels of malondialdehyde (MDA), which is the end product of lipid peroxidation and an indication of oxidative stress, in lactating Saanen goats’ milk taken at different lactation periods (early, mid, late) were determined. Material and Methods: The material of the research consists of 212-lactating goat milk samples taken from different farms and different lactation stages. The chemical properties of the samples (dry matter, fat, protein, lactose and density) were determined, also MDA levels were determined by spectrophotometric method to examine the changes during lactation period. Results: In terms of chemical properties of Saanen goats’ milks, protein and lactose results show linearity with dry matter content, whereas fat content shows differences. In goat milk samples an increased level of somatic cells can be correlated with an increase in the concentration of MDA. Besides mean MDA concentration changed significantly according to different stages of lactation. In early lactation period MDA level was 12.48 μmol/L, in mid period MDA level was 4.69 μmol/L and in late lactation period MDA level was 9.41 μmol/L. The statistical analyses showed that the differences between the levels were significant (P 0.05). Conclusion: In the research it was determined that increasing somatic cell counts were significantly related higher levels of MDA. It was seen that MDA levels in goat milks had the highest levels in early lactation period. In this case, MDA levels may be attributable not only to the physiological factors but also to unknown factors. Supporting with vitamins and minerals before lactation can be effective to reduce stress, so the level of MDA.

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Malondialdehyde , goat milk , somatic cell count

The Journal Of Ege University Faculty Of Agriculture

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