Mongolian wool
6.The experiment proved that all the levels of selenium in wool and serum,Thyroid hormone, Thyroid-stimulating hormone, GSH-Px in serum and peripheral blood T lymphocyte (CD2) and Mononuclear Macrophage ( CD14) of Mongolian Sheep were significantly higher than those of Poll Dorset and Texel Mutton Sheep(P<0.05)With the same conditions of breeding and management ,the differences of these parameters were maybe one of the reasons that the disease resisitivity of Poll Dorset, Texel Mutton Sheep are lower than that of Mongolian Sheep.

