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首页> 外文期刊>Fruit, Vegetable and Cereal Science and Biotechnology >Screening Sweetpotato Germplasm for Starch, Flour and Feed Quality Characteristics
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Screening Sweetpotato Germplasm for Starch, Flour and Feed Quality Characteristics

机译：筛选甘薯种质的淀粉，面粉和饲料品质特征

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Studies were conducted to screen newly collected sweetpotato germplasm for starch, flour, and feed quality traits. Fresh tuber and forage yields were evaluated in the first study using 13 genotypes while in the second study tuber dry matter (DM) and starch contents were investigated using 17 genotypes both in augmented incomplete block designs. In the third study, voluntary dry matter intake (VDMI) was determined in White Fulani cows fed with sole fresh sweetpotato forage in early lactation, and potential degradation trial in three rumen-fistulated N'Dama steers using the in-sacco technique in a completely randomized design. Mean (±SE) fresh tuber yield (13.00 ± 0.471 t/ha) was higher (P < 0.01) in control than test genotypes (13.20 versus 12.94 t/ha) while, flour yield (35.71 ± 1.351) was lower in control than test genotypes (34.80 versus 38.74 g/100 g). Tuber DM ranged (P< 0.01) from 44.27 to 67.11 g/100 g, and starch content from 19.80 to 30.60 g/100 g, with a negative correlation (r = -0.65;P = 0.05) observed between both parameters. The orange- and white-fleshed genotypes were similar (P > 0.05) in the agronomic parameters determined. Forage crude protein (CP) ranged (P < 0.05) from 116.1 to 221.0 g/kg DM, neutral detergent fibre (NDF) from 376.4 to 482.0 g/kg DM, and p-carotene from 320 to 460 |ig/100 g. Voluntary DMI, percent of liveweight, and potential degradability of DM varied (P < 0.05) from 7.4 to 9.0 kg/d, 2.9 to 3.7%, and 837 to 885 g/kg DM, respectively. The positive correlation (r = 0.92; P = 0.05) between flour yield and forage NDF suggests the possibility of developing models for predicting forage quality based on both agronomic and nutritional data.
机译：进行了研究以筛选新收集的甘薯种质的淀粉，面粉和饲料品质性状。在第一个研究中，使用13个基因型评估了新鲜块茎和牧草的产量，而在第二个研究中，在增强型不完全块设计中，使用17个基因型研究了块茎干物质（DM）和淀粉含量。在第三项研究中，确定了在哺乳初期以单独的新鲜甘薯饲喂的白色富拉尼奶牛的自愿干物质摄入量（VDMI），并使用囊内技术在三个瘤胃-的N'Dama ste牛中进行了完全降解试验随机设计。对照的新鲜块茎平均（±SE）产量（13.00±0.471 t / ha）高于测试基因型（13.20对12.94 t / ha）（P <0.01），而对照的面粉产量（35.71±1.351）低于对照基因型测试基因型（34.80对38.74 g / 100 g）。块茎DM的范围（P <0.01）为44.27至67.11 g / 100 g，淀粉含量为19.80至30.60 g / 100 g，两个参数之间均呈负相关（r = -0.65; P = 0.05）。确定的农艺参数中橙色和白色肉质的基因型相似（P> 0.05）。饲用粗蛋白（CP）的范围（P <0.05）为116.1至221.0 g / kg DM，中性洗涤剂纤维（NDF）为376.4至482.0 g / kg DM，对胡萝卜素为320至460 | ig / 100 g。 DM的自愿DMI，活重百分比和潜在降解性分别为7.4至9.0 kg / d，2.9至3.7％和837至885 g / kg DM（P <0.05）。面粉产量与牧草NDF之间的正相关性（r = 0.92; P = 0.05）表明，有可能建立基于农艺和营养数据来预测牧草质量的模型。

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