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首页> 外文期刊>Tropical Animal Health and Production >The nutritive value of mulberry leaves (Morus alba) as a feed supplement for sheep
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The nutritive value of mulberry leaves (Morus alba) as a feed supplement for sheep

机译：桑叶（桑叶）作为绵羊饲料的营养价值

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A study to determine the nutritive value of mulberry (Morus alba) leaves in sheep diets was conducted. Mulberry leaves contained (g kg(-1) on dry matter basis): 163 ash, 201 crude protein, 120 crude fibre, 37 ether extracts, 479 nitrogen-free extracts, 268 neutral detergent fibre, 148 acid detergent fibre, 41 acid detergent lignin, 121 cellulose and 107 hemicellulose, while the in vitro true digestibility of dry matter was 89.8%. The nitrogen (N) solubility, determined using: a) McDougall's buffer, b) 0.02 N sodium hydroxide (NaOH) and c) 0.15 N sodium chloride (NaCl) as solvents, ranged from 11.6 to 14.9% of total N. In addition, the soluble non-protein nitrogen contributed a substantial part of total N (26.1%), the total true protein was 14.4% and the protein fractions evaluated after classical protein fractionation, were: albumins 11.1, globulins 9.7, prolamins 44.1, glutelins 8.5 and insoluble (or structural) proteins 26.6% of total N. In a digestibility trial, where mulberry leaves partially replaced lucerne hay and concentrates in wether sheep diets, there were no significant differences in dry matter, crude protein or crude fibre digestibility of the total diet. It was concluded that mulberry leaves have an appreciable potential as a protein source in sheep feeding.
机译：为了确定绵羊日粮中的桑叶营养价值，进行了一项研究。桑叶含量（以干物质计g kg（-1））：163灰分，201粗蛋白，120粗纤维，37醚提取物，479无氮提取物，268中性洗涤剂纤维，148酸性洗涤剂纤维，41酸性洗涤剂木质素，121纤维素和107半纤维素，而干物质的体外真实消化率为89.8％。氮（N）的溶解度使用以下方法测定：a）McDougall缓冲液，b）0.02 N氢氧化钠（NaOH）和c）0.15 N氯化钠（NaCl）作为溶剂，范围为总N的11.6％至14.9％。可溶性非蛋白质氮占总氮的大部分（26.1％），总真实蛋白质为14.4％，经经典蛋白质分级分离后评估的蛋白质分数为：白蛋白11.1，球蛋白9.7，谷醇溶蛋白44.1，谷蛋白8.5和不溶（或结构）蛋白质占总氮的26.6％。在一项消化性试验中，桑叶部分替代了卢塞恩干草，并集中在较肥的绵羊日粮中，干日粮，粗蛋白或粗纤维消化率在总日粮中没有显着差异。结论是，桑叶作为绵羊饲料中的蛋白质来源具有很大的潜力。

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