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为了研究经济作物副产物饲料化的利用价值,笔者对海南省7种经济作物副产物的主要营养成分和矿物质含量进行测定,并应用隶属函数法综合评价其营养价值。结果表明:7种经济作物副产物主要营养物质中,干物质含量为7.85%~33.42%,粗蛋白含量为6.64%~22.50%,海南省7种经济作物副产物粗脂肪含量为1.72%~5.80%,酸性洗涤纤维含量为13.25%~30.90%,中性洗涤纤维含量为17.16%~33.30%,单宁含量为5.24~35.67 mg/g,饲料相对值为184.95~426.86;矿物质含量中,钙含量为0.32%~3.52%,磷含量为0.18%~0.58%,钙磷比为0.65~11.76,铁含量为208.29~891.33 mg/kg,锰含量为66.92~666.17 mg/kg,铜含量为3.46~9.60 mg/kg,锌含量为27.56~58.98 mg/kg;7种经济作物副产物营养价值由高到低依次为桑叶>木瓜茎叶>芒果皮>西瓜皮>荷叶>火龙果茎叶>火龙果皮。
In order to study the utilization value of economic byproduct feedstuffs, the author determined the main nutritive components and the mineral contents of by-products in seven kinds of cash crops in Hainan Province, and applied the membership function method to comprehensively evaluate their nutritional value. The results showed that the dry matter content was 7.85% -33.42%, the crude protein content was 6.64% -22.50%, and the crude fat content of by-products from seven economic crops in Hainan Province was 1.72% ~ 5.80 %, The content of acid detergent fiber is 13.25% -30.90%, the content of neutral detergent fiber is 17.16% -33.30%, the content of tannin is 5.24-35.67 mg / g, the relative value of feed is 184.95-426.86; The content of phosphorus is 0.32% ~ 3.52%, the content of phosphorus is 0.18% ~ 0.58%, the ratio of calcium to phosphorus is 0.65 ~ 11.76, the content of iron is 208.29 ~ 891.33 mg / kg, the content of manganese is 66.92 ~ 666.17 mg / 9.60 mg / kg, zinc content was 27.56 ~ 58.98 mg / kg. The nutritional value of by-products in seven cash crops were mulberry leaves> papaya stems and leaves> mango peel> watermelon peel> lotus leaf> Dragon fruit peel.