EVANS G W.The effect of chromium picolinate on insulin controlled parameters in humans[J].International Journal of Biosocial and Medicine Research,1989,11:163-175.
MISHRA M,MARTZ F A,STANLEY R W,et al.Effect of diet and ambient temperature-humidity on ruminal pH,oxidation reduction potential,ammonia and lactic acid in lactating cow[J].Journal of Animal Science,1970,30(6):1023-1028.
OWENS F N,BERGEN W G.Nitrogen metabolism of ruminant animals:historical perspective,current understanding and future implications[J].Journal of Animal Science,1983,57:498-518.
[16]
COLLIER R J,BEEDE D K,THATCHER W W,et al.Influences of environments and its modification on dairy animal health and production[J].Journal of Dairy Science,1982,65:2213-2227.