Study on Expression of SYK in Dairy Cow Mammary Gland

To investigate the relationship between the expression of SYK and dairy cow mammary gland development and lactation,the expression of SYK in lactating dairy cow mammary gland with high or low quality milk and dry period Holstein dairy cow mammary gland was detected by Western blotting and laser confocal microscope.The results showed that SYK expression in dry period mammary gland was significant higher than that in lactating mammary gland(P0.05).There was no SYK differential expression detected between lactating mammary gland with high quality milk and low quality milk(P0.05).SYK was mainly located in the cytoplasm of ductal epithelial cells in dry period mammary gland.In lactating mammary gland,SYK was existed in acinar epithelial cells.All these results revealed that SYK was a regulator in mammary epithelial cell proliferation and differentiation.It participated in mammary gland reconstitution in dry period.