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Yang KM, Jiang ZY, Zheng CT, Wang L, Yang XF.Yang KM, et al. Among authors: zheng ct.J Anim Sci. 2014 Apr;92(4):1496-503. doi: 10.2527/jas.2013-6619. Epub 2014 Feb 3.J Anim Sci. 2014.PMID: 24492550Clinical Trial.