作者: Lekh Raj Juneja , Tsutomu Okubo , Noriyuki Ishihara , Seiji Shu
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摘要: A poultry producibility improver containing a polymannose having such molecular weight distribution that the weights ranging from 1.8x10 to account for 70 % or above; pultry further polyphenol; furthermore defatted rice bran; and method of improving laying hen chicken breed by using any above improvers. The invention permits be improved at low cost.