THE NUTRITIONAL CONTENT OF DUCKWEED (LEMNA-PAUCICOSTATA HEGELM) IN THE KAINJI LAKE AREA, NIGERIA
THE NUTRITIONAL CONTENT OF DUCKWEED (LEMNA-PAUCICOSTATA HEGELM) IN THE KAINJI LAKE AREA, NIGERIA
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DOI：
10.1016/0304-3770(88)90079-4
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发表时间：
1988-01-01
期刊：
影响因子：
1.8
通讯作者：
ADENIJI, HA
中科院分区：
文献类型：
--
作者：
MBAGWU, IG;ADENIJI, HA
对3个不同产地的浮萍进行了营养成分分析。粗蛋白水平为植株干重的26.3%~45.5%。该植物的氨基酸含量与血粉、豆粕、棉籽粉相当，远远超过花生粕。除蛋氨酸达到推荐值的61.4%外，其余必需氨基酸水平均超过粮农组织的参考模式。矿物质含量很高，但如果加入动物饲料中，应该不会造成任何毒性问题。植物中的氮水平与商业化肥中的氮水平相当。该植物可作为人、畜、鱼的良好膳食补充剂和营养源，也可作为良好的肥料补充。平均现存量为309千克干重(DM)ha-1，倍增时间1.2天，每天可获得129千克干浮萍(DM ha-1)，可保证每天供应59千克优质蛋白质用于家禽和鱼类饲料配方。在旱季，特别是在Harmattan(12月和1月)期间，人工收获和晒干在经济上是可行的。在雨季，廉价的太阳能烘干机可以方便地用于烘干。
Nutrient analyses were carried out on the duckweed Lemna paucicostata from three different locations. Crude protein level ranged from 26.3 to 45.5% of plant dry mass. The amino acid content of the plant compared favourably with that of blood, soybean and cottonseed meals and considerably exceeded that of groundnut meal. The levels of the essential amino acids surpassed the FAO reference pattern, except for methionine which met 61.4% of the recommended value. The levels of minerals were high but should not pose any toxicity problems if incorporated into animal feeds. The levels of nitrogen in the plant are comparable to those in commercial fertilizers. The plant could be a good dietary supplement and nutrient source for humans, livestock and fish and also could act as a good fertilizer suppplement. With an average standing crop of 309 kg dry mass (DM) ha-1 and doubling time of 1.2 days, 129 kg DM ha-1 of dry duckweed are obtainable daily in the Kainji Lake area, which could ensure a daily supply of 59 kg of high-quality protein for poultry and fish feed formulation. Manual harvesting and sun-drying are economically feasible in the dry season, especially during harmattan (December and January). In the rainy season, a cheap solar drier can be conveniently used for drying.