野生经济植物资源橡籽仁可利用价值的研究

Utilizable value of wild economic plant resourceacorn kernel

以京白种鸡作试验动物 ,以玉米、稻谷作对照 ,采用鸡真代谢能 (TME)法研究野生经济植物资源橡籽仁的可利用营养价值 .结果表明 ,橡籽仁 1kg含总能 (GE) 16.5 3MJ ,表观代谢能 (AME) 11.13MJ ,真代谢能(TME) 11.66MJ ,含粗蛋白 (CP) 10 .63 % ,CP的表观利用率 (CPAA) 45 .5 5 % ,真利用率 (CPTA) 49.83 % ,17种氨基酸 (AA)总含量 9.2 3 % ,必需氨基酸 (EAA)和半必需氨基酸 4.84% ,氨基酸真利用率 (TAAA) 60 .85 % ,氨基酸真利用含量 [TAAA] 6.0 9% ,单宁 4.5 5 % ,氢氰酸 0 .98% .橡籽仁的可利用营养价值接近或略低于玉米 ,但略优于稻谷 ,是一良好的可利用野生经济植物资源 。

Peking whites breeding hens were selected. Using true metabolizable energy method (TME) to evaluate the available nutritive value of acorn kernel, while maize and rice were used as control. The results showed that the contents of gross energy (GE), apparent metabolizable energy (AME), true metabolizable energy (TME) and crude protein (CP) in the acorn kernel were 16.53mg·kg -1 , 11.13mg·kg -1 , 11.66mg·kg -1 and 10.63%, respectively. The apparent availability and true availability of crude protein were 45.55% and 49.83%. The gross content of 17 amino acids, essential amino acids and semiessential amino acids were 9.23% and 4.84%. The true availability of amino acid and the content of true available amino acid were 60.85% and 6.09%. The contents of tannin and hydrocyanic acid were 4.55% and 0.98% in acorn kernel. The available nutritive value of acorn kernel is similar to maize or slightly lower, but slightly higher than that of rice. Acorn kernel is a wild economic plant resource to exploit and utilize but it contains higher tannin and hydrocyanic acid.