1 材料与方法
1.1 试验材料
1.2 试验设计
表1 试验1所用饲粮组成及营养水平(饲喂基础)Table 1 Composition and nutrient levels of diets used in experiment 1 (as-fed basis) % |
| 项目 Items | 阶段1 Stage 1 | 阶段2 Stage 2 | |||
|---|---|---|---|---|---|
| 基础饲粮 Basal diet | 试验饲粮 Experimental diet | 基础饲粮 Basal diet | 试验饲粮 Experimental diet | ||
| 原料Ingredients | |||||
| 待测玉米Test corn | 40.00 | 40.00 | |||
| 玉米Corn | 52.30 | 30.44 | 55.20 | 32.11 | |
| 豆粕Soybean meal | 39.40 | 22.93 | 34.50 | 20.07 | |
| 豆油Soybean oil | 4.00 | 2.33 | 5.94 | 3.46 | |
| 赖氨酸Lys | 0.12 | 0.12 | 0.11 | 0.11 | |
| 蛋氨酸Met | 0.25 | 0.25 | 0.25 | 0.25 | |
| 磷酸氢钙CaHPO4 | 2.00 | 2.00 | 2.00 | 2.00 | |
| 石粉Limestone | 1.03 | 1.03 | 1.10 | 1.10 | |
| 预混料Premix1) | 0.90 | 0.90 | 0.90 | 0.90 | |
| 合计Total | 100.00 | 100.00 | 100.00 | 100.00 | |
| 营养水平Nutrient levels2) | |||||
| 代谢能ME/(MJ/kg) | 12.39 | 12.60 | 12.97 | 12.93 | |
| 总能GE/(MJ/kg) | 17.29 | 16.33 | 17.17 | 16.12 | |
| 粗蛋白质CP | 20.67 | 13.68 | 19.09 | 13.40 | |
| 粗灰分Ash | 6.76 | 6.52 | 6.88 | 6.51 | |
| 粗脂肪EE | 11.39 | 11.64 | 11.35 | 11.57 | |
| 粗纤维CF | 3.43 | 3.07 | 4.02 | 3.12 | |
1)预混料为每千克饲粮提供 The premix provided the following per kg of diets:VA 12 000 IU,VD3 3 500 IU,VE 20 000 IU,VK 3 mg,VB1 3.5 mg,VB2 8 mg,VB6 7 mg,VB12 0.03 mg,烟酸 nicotinic acid 30 mg,泛酸 pantothenic acid 20 mg,叶酸 folic acid 1 mg,生物素 biotin 0.1 mg,胆碱 choline 1 000 mg,Fe 96 mg,Cu 25 mg,Zn 98 mg,Mn 105.4 mg,I 0.9 mg,Se 0.4 mg。 | |
2)代谢能为计算值,其余为测定值。ME was a calculated value, while the others were measured values. |
表2 试验2所用饲粮组成及营养水平(饲喂基础)Table 2 Composition and nutrient levels of diets used in experiment 2 (as-fed basis) % |
| 项目 Items | 试验饲粮 Experimental diet | 无氮饲粮 Nitrogen- free diet |
|---|---|---|
| 原料Ingredients | ||
| 待测玉米Test corn | 95.66 | |
| 玉米淀粉Corn starch | 68.10 | |
| 葡萄糖Glucose | 22.70 | |
| 磷酸氢钙CaHPO4 | 1.80 | 1.90 |
| 石粉Limestone | 1.30 | 1.18 |
| 食盐NaCl | 0.30 | 0.18 |
| 纤维素Cellulose | 5.00 | |
| 氯化胆碱Choline chloride | 0.15 | 0.15 |
| 磷酸氢钠NaHCO3 | 0.15 | 0.15 |
| 预混料Premix1) | 0.23 | 0.23 |
| 抗氧化剂Antioxidant | 0.01 | 0.01 |
| 二氧化钛TiO2 | 0.40 | 0.40 |
| 合计Total | 100.00 | 100.00 |
| 营养水平Nutrient levels2) | ||
| 粗蛋白质CP | 7.01 | 0.25 |
| 钙Ca | 0.83 | 0.82 |
| 赖氨酸Lys | 0.26 | 0.00 |
| 蛋氨酸Met | 0.09 | 0.00 |
1)预混料为每千克饲粮提供The premix provided the following per kg of diets:VA 12 000 IU,VD3 3 500 IU,VE 20 000 IU,VK 3 mg,VB1 3.5 mg,VB2 8 mg,VB6 7 mg,VB12 0.03 mg,烟酸 nicotinic acid 30 mg,泛酸 pantothenic acid 20 mg,叶酸 folic acid 1 mg,生物素 biotin 0.1 mg,胆碱 choline 1 000 mg,Fe 96 mg,Cu 25 mg,Zn 98 mg,Mn 105.4 mg,I 0.9 mg,Se 0.4 mg。 2)营养水平均为测定值。Nutrient levels were measured values. |
1.3 样品采集
1.4 指标测定
1.5 计算公式
1.5.1 AME和AMEn的计算
1.5.2 氨基酸SID的计算
1.6 统计分析
2 结果与分析
2.1 玉米的常规营养成分分析
表3 不同来源玉米的常规营养成分含量Table 3 Conventional nutrient contents of corns from different sources |
| 样品编号 Sample number | 干物质 DM/% | 粗脂肪 EE/% | 粗蛋白质 CP/% | 粗纤维 CF/% | 粗灰分 Ash/% | 中性洗涤纤维 NDF/% | 酸性洗涤纤维 ADF/% | 总能 GE/(MJ/kg) |
|---|---|---|---|---|---|---|---|---|
| 1 | 85.30 | 2.43 | 7.44 | 4.94 | 0.86 | 13.15 | 2.40 | 18.74 |
| 2 | 85.42 | 3.04 | 8.24 | 6.18 | 0.67 | 12.49 | 2.60 | 18.69 |
| 3 | 84.95 | 3.04 | 7.83 | 2.63 | 0.74 | 16.20 | 2.99 | 18.70 |
| 4 | 85.70 | 2.94 | 8.02 | 3.01 | 0.93 | 14.46 | 2.77 | 18.74 |
| 5 | 85.42 | 2.96 | 7.82 | 3.44 | 0.87 | 14.62 | 3.03 | 18.51 |
| 6 | 86.06 | 2.86 | 7.27 | 3.01 | 0.92 | 16.09 | 2.78 | 18.25 |
| 7 | 85.93 | 2.80 | 6.73 | 1.12 | 0.91 | 15.42 | 3.07 | 18.33 |
| 8 | 85.80 | 3.02 | 6.99 | 3.52 | 0.93 | 13.18 | 2.88 | 18.48 |
| 9 | 86.15 | 2.68 | 6.87 | 2.57 | 1.07 | 11.15 | 2.51 | 18.67 |
| 10 | 85.92 | 2.94 | 6.75 | 3.93 | 1.12 | 13.15 | 2.36 | 18.31 |
| 平均值Mean | 85.67 | 2.87 | 7.40 | 3.43 | 0.90 | 14.00 | 2.74 | 18.55 |
| 标准差SD | 0.38 | 0.04 | 0.31 | 1.91 | 0.02 | 2.70 | 0.07 | 0.04 |
| 变异系数CV/% | 0.40 | 7.00 | 7.20 | 40.10 | 15.10 | 12.00 | 10.20 | 0.70 |
干物质含量是饲喂基础,其他营养成分含量是干物质基础。 | |
DM content is based on as-fed basis and other nutrient contents is based on DM basis. |
表4 不同来源玉米的18种氨基酸含量(干物质基础)Table 4 Contents of 18 kinds of amino acids in corns from different sources (DM basis) % |
| 项目 Items | 样品编号Sample number | 平均值 Mean | 标准差 SD | 变异系数 CV | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||||
| 天门冬氨酸Asp | 0.41 | 0.47 | 0.45 | 0.40 | 0.39 | 0.43 | 0.40 | 0.43 | 0.42 | 0.41 | 0.42 | 0.02 | 5.90 |
| 谷氨酸Glu | 0.41 | 0.47 | 0.45 | 0.40 | 0.39 | 0.43 | 0.40 | 0.43 | 0.42 | 0.41 | 0.42 | 0.02 | 6.20 |
| 丝氨酸Ser | 0.30 | 0.33 | 0.32 | 0.29 | 0.27 | 0.29 | 0.28 | 0.28 | 0.29 | 0.29 | 0.29 | 0.02 | 6.30 |
| 组氨酸His | 0.21 | 0.22 | 0.22 | 0.20 | 0.20 | 0.23 | 0.20 | 0.19 | 0.22 | 0.21 | 0.21 | 0.01 | 5.90 |
| 甘氨酸Gly | 0.24 | 0.25 | 0.24 | 0.25 | 0.23 | 0.25 | 0.23 | 0.22 | 0.26 | 0.25 | 0.24 | 0.01 | 5.10 |
| 苏氨酸Thr | 0.24 | 0.25 | 0.20 | 0.25 | 0.20 | 0.23 | 0.21 | 0.19 | 0.24 | 0.21 | 0.22 | 0.02 | 10.10 |
| 精氨酸Arg | 0.32 | 0.31 | 0.32 | 0.29 | 0.29 | 0.31 | 0.29 | 0.29 | 0.30 | 0.30 | 0.30 | 0.01 | 4.10 |
| 丙氨酸Ala | 0.44 | 0.50 | 0.48 | 0.46 | 0.40 | 0.44 | 0.43 | 0.44 | 0.44 | 0.46 | 0.45 | 0.03 | 6.20 |
| 酪氨酸Tyr | 0.20 | 0.24 | 0.21 | 0.22 | 0.19 | 0.21 | 0.19 | 0.20 | 0.20 | 0.20 | 0.21 | 0.02 | 7.30 |
| 半胱氨酸Cys | 0.05 | 0.06 | 0.04 | 0.03 | 0.03 | 0.05 | 0.03 | 0.04 | 0.03 | 0.03 | 0.03 | 0.01 | 28.20 |
| 缬氨酸Val | 0.28 | 0.33 | 0.33 | 0.27 | 0.29 | 0.28 | 0.29 | 0.28 | 0.30 | 0.30 | 0.30 | 0.02 | 7.00 |
| 蛋氨酸Met | 0.13 | 0.08 | 0.08 | 0.07 | 0.05 | 0.06 | 0.06 | 0.11 | 0.13 | 0.15 | 0.09 | 0.04 | 38.30 |
| 苯丙氨酸Phe | 0.25 | 0.30 | 0.30 | 0.25 | 0.15 | 0.28 | 0.29 | 0.26 | 0.28 | 0.30 | 0.27 | 0.05 | 17.00 |
| 异亮氨酸Ile | 0.26 | 0.22 | 0.21 | 0.18 | 0.18 | 0.20 | 0.19 | 0.19 | 0.20 | 0.20 | 0.20 | 0.02 | 11.60 |
| 亮氨酸Leu | 0.67 | 0.80 | 0.76 | 0.67 | 0.65 | 0.70 | 0.68 | 0.66 | 0.69 | 0.72 | 0.70 | 0.05 | 6.80 |
| 赖氨酸Lys | 0.23 | 0.28 | 0.28 | 0.26 | 0.24 | 0.26 | 0.25 | 0.23 | 0.29 | 0.28 | 0.26 | 0.02 | 8.50 |
| 脯氨酸Pro | 0.54 | 0.49 | 0.51 | 0.39 | 0.48 | 0.42 | 0.51 | 0.57 | 0.47 | 0.40 | 0.48 | 0.06 | 12.40 |
| 色氨酸Trp | 0.22 | 0.20 | 0.20 | 0.21 | 0.25 | 0.29 | 0.33 | 0.37 | 0.41 | 0.45 | 0.29 | 0.09 | 31.60 |
2.2 快速型黄羽肉鸡玉米代谢能值评定及AME预测方程建立
2.2.1 快速型黄羽肉鸡玉米代谢能值评定
表5 快速型黄羽肉鸡的代谢能值测定结果(干物质基础)Table 5 Measurement results of metabolizable energy of fast-growing yellow-feathered broilers (DM basis)MJ/kg |
| 样品编号 Sample number | 12~18日龄12 to 18 days of age | 33~39日龄33 to 39 days of age | |||
|---|---|---|---|---|---|
| 表观代谢能 AME | 氮校正表观代谢能 AMEn | 表观代谢能 AME | 氮校正表观代谢能 AMEn | ||
| 1 | 12.96ab | 12.62ab | 12.60c | 12.24c | |
| 2 | 13.04ab | 12.73ab | 13.80a | 13.45a | |
| 3 | 13.67a | 13.29a | 13.68a | 13.29a | |
| 4 | 12.48ab | 12.14ab | 13.00abc | 12.67abc | |
| 5 | 11.93b | 11.65c | 12.76bc | 12.38bc | |
| 6 | 12.83ab | 12.47ab | 13.40abc | 13.05abc | |
| 7 | 13.38a | 12.99a | 13.37abc | 13.12abc | |
| 8 | 13.59a | 13.26a | 13.58ab | 13.25a | |
| 9 | 13.26ab | 12.91a | 12.64c | 12.31bc | |
| 10 | 12.34ab | 12.03ab | 12.40c | 12.18bc | |
| 平均值Mean | 12.96 | 12.62 | 13.06 | 12.73 | |
| 标准差SD | 1.04 | 0.97 | 0.80 | 0.78 | |
| P值P-value | 0.048 | 0.045 | 0.015 | 0.015 | |
同列数据肩标不同小写字母表示差异显著(P<0.05),相同或无字母表示差异不显著(P>0.05)。 | |
In the same column, values with different small letter superscripts mean significant difference (P<0.05), while with the same or no letter superscripts mean no significant different (P>0.05). |
2.2.2 快速型黄羽肉鸡玉米AME预测方程建立
表6 快速型黄羽肉鸡玉米AME的预测方程Table 6 Prediction equations of AME of fast-growing yellow-feathered broilers for corn |
| 项目 Items | 预测方程 Prediction equation | 决定系数 R2 | P值 P-value |
|---|---|---|---|
| 12~18日龄表观代谢能 AME for 12 to 18 days of age | AME(MJ/kg)=41.26-0.10DM+1.00EE-0.94CP- 0.49CF-7.46Ash-0.16NDF-1.88ADF | 0.78 | 0.593 |
33~39日龄表观代谢能 AME for 33 to 39 days of age | AME(MJ/kg)=15.28-2.37Ash | 0.47 | 0.029 |
| AME(MJ/kg)=-25.19+0.52DM+1.56EE-0.43CP- 0.12CF-5.23Ash+0.02NDF-0.84ADF | 0.94 | 0.195 |
AME:表观代谢能 apparent metabolizable energy;DM:干物质 dry matter;CP:粗蛋白质 crude protein;CF:粗纤维 crude fiber;Ash:粗灰分 crude ash;NDF:中性洗涤纤维 neutral detergent fiber;ADF:酸性洗涤纤维 acid detergent fiber;EE:粗脂肪 ether extract。 |
2.3 快速型黄羽肉鸡氨基酸SID评定
表7 14~18日龄快速型黄羽肉鸡对玉米中氨基酸的标准回肠消化率Table 7 Standard ileal digestibility of amino acids in corns for 14- to 18-day-old fast-growing yellow-feathered broilers % |
| 项目 Items | 样品编号Sample number | 平均值 Mean | 标准差 SD | P值 P-value | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||||
| 必需氨基酸EAA | |||||||||||||
| 精氨酸Arg | 59.60 | 41.94 | 67.13 | 65.53 | 71.19 | 60.80 | 70.95 | 36.32 | 79.26 | 49.84 | 60.03 | 25.75 | 0.071 |
| 组氨酸His | 87.73 | 80.23 | 87.80 | 86.98 | 75.04 | 92.77 | 77.20 | 75.57 | 88.50 | 75.18 | 82.53 | 12.17 | 0.055 |
| 异亮氨酸Ile | 70.90ab | 52.18abc | 72.26a | 57.53ab | 74.53a | 59.11ab | 70.47ab | 36.41bc | 77.23a | 21.97c | 59.29 | 29.53 | 0.007 |
| 亮氨酸Leu | 74.88 | 73.36 | 81.61 | 79.31 | 83.41 | 74.49 | 81.42 | 67.81 | 87.17 | 75.05 | 77.91 | 11.05 | 0.091 |
| 赖氨酸Lys | 73.59 | 74.86 | 65.53 | 73.76 | 62.48 | 72.99 | 69.86 | 81.05 | 63.49 | 76.95 | 71.13 | 17.49 | 0.051 |
| 蛋氨酸Met | 89.09a | 67.75bc | 36.31cd | 20.70d | 60.14bcd | 40.00cd | 46.71c | 71.72abc | 83.85ab | 60.33ab | 61.18 | 31.11 | 0.001 |
| 苯丙氨酸Phe | 68.60ab | 66.42bc | 80.34ab | 72.82ab | 75.73ab | 77.33ab | 86.27a | 50.82c | 83.97ab | 75.60ab | 73.75 | 16.01 | 0.003 |
| 苏氨酸Thr | 49.16 | 40.27 | 49.65 | 49.69 | 63.90 | 54.61 | 62.58 | 22.88 | 70.56 | 52.86 | 51.56 | 25.85 | 0.091 |
| 色氨酸Trp | 47.79c | 71.33abc | 61.02abc | 63.42abc | 85.02ab | 56.99bc | 76.11abc | 69.98abc | 88.00a | 83.46ab | 71.54 | 21.27 | 0.044 |
| 缬氨酸Val | 55.01abc | 52.18bc | 72.25a | 50.88bc | 72.43ab | 55.77abc | 70.77ab | 43.25c | 76.86a | 60.53abc | 61.57 | 18.82 | 0.006 |
| 非必需氨基酸NEAA | |||||||||||||
| 丙氨酸Ala | 62.89bcd | 58.97cd | 77.45ab | 71.97abcd | 72.97abc | 58.58cd | 71.07abcd | 56.87d | 83.98a | 80.78a | 69.61 | 14.31 | 0.001 |
| 天门冬氨酸Asp | 53.99 | 49.22 | 66.84 | 61.07 | 75.88 | 54.58 | 66.93 | 46.37 | 76.34 | 52.85 | 60.24 | 20.45 | 0.101 |
| 半胱氨酸Cys | 70.68bc | 73.21bc | 73.33bc | 56.97cd | 73.92bc | 81.68ab | 78.55ab | 84.20ab | 96.03a | 51.14d | 74.13 | 18.76 | 0.001 |
| 谷氨酸Glu | 72.36bcd | 70.19cd | 80.37abc | 78.36abcd | 84.13ab | 70.80bcd | 77.23bcd | 64.40d | 90.55a | 74.65bcd | 76.47 | 11.40 | 0.005 |
| 甘氨酸Gly | 49.99bc | 41.49bc | 55.10abc | 58.17abc | 62.73ab | 46.83bc | 61.40abc | 38.05c | 74.17a | 58.27abc | 54.75 | 19.15 | 0.033 |
| 脯氨酸Pro | 58.08c | 48.13c | 60.56bc | 61.44bc | 72.98ab | 51.30c | 76.07a | 72.90ab | 86.12a | 74.59ab | 66.53 | 15.20 | 0.001 |
| 丝氨酸Ser | 56.06 | 50.80 | 66.42 | 63.38 | 68.45 | 51.85 | 65.29 | 44.50 | 76.23 | 57.83 | 60.22 | 19.32 | 0.145 |
| 酪氨酸Tyr | 73.98a | 69.04ab | 80.81a | 74.21a | 81.76a | 72.11a | 77.75a | 51.07b | 77.52a | 61.58ab | 71.57 | 15.78 | 0.016 |
表8 35~39日龄快速型黄羽肉鸡对玉米中氨基酸的标准回肠消化率Table 8 Standard ileal digestibility of amino acids in corns for 35- to 39-day-old fast-growing yellow-feathered broilers % |
| 项目 Items | 样品编号Sample number | 平均值 Mean | 标准差 SD | P值 P-value | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | ||||
| 必需氨基酸EAA | |||||||||||||
| 精氨酸Arg | 83.24ab | 61.53bc | 76.16abc | 61.38bc | 76.01abc | 66.83bc | 66.44bc | 58.65c | 65.51bc | 94.30a | 70.85 | 18.53 | 0.009 |
| 组氨酸His | 83.41 | 62.73 | 71.45 | 61.51 | 59.33 | 73.26 | 64.37 | 72.34 | 73.93 | 71.14 | 69.10 | 16.26 | 0.445 |
| 异亮氨酸Ile | 73.66 | 71.58 | 72.92 | 53.21 | 70.37 | 84.30 | 76.87 | 81.92 | 75.68 | 74.23 | 74.15 | 23.31 | 0.842 |
| 亮氨酸Leu | 85.53 | 65.29 | 71.44 | 60.98 | 57.38 | 68.42 | 63.63 | 67.57 | 65.36 | 65.30 | 67.27 | 14.18 | 0.078 |
| 赖氨酸Lys | 72.56 | 57.69 | 62.57 | 53.28 | 60.69 | 59.88 | 49.45 | 65.95 | 61.64 | 65.45 | 60.90 | 26.35 | 0.960 |
| 蛋氨酸Met | 90.29ab | 89.17ab | 87.50ab | 93.34a | 72.63c | 84.63ab | 87.11ab | 93.87a | 93.30a | 79.03bc | 86.97 | 10.43 | 0.008 |
| 苯丙氨酸Phe | 71.09 | 75.85 | 84.78 | 73.10 | 48.52 | 83.36 | 78.44 | 84.07 | 76.89 | 81.72 | 76.36 | 23.01 | 0.285 |
| 苏氨酸Thr | 76.20 | 77.00 | 57.20 | 55.58 | 71.94 | 75.30 | 60.64 | 63.08 | 74.85 | 69.98 | 68.17 | 15.77 | 0.075 |
| 缬氨酸Val | 84.90 | 74.66 | 70.55 | 67.90 | 71.66 | 63.15 | 65.71 | 74.58 | 75.69 | 69.13 | 71.65 | 11.92 | 0.080 |
| 非必需氨基酸NEAA | |||||||||||||
| 丙氨酸Ala | 78.37 | 69.75 | 71.12 | 72.02 | 72.85 | 61.84 | 60.82 | 67.46 | 67.17 | 64.46 | 68.40 | 10.26 | 0.074 |
| 天门冬氨酸Asp | 73.10 | 60.15 | 66.48 | 72.18 | 68.77 | 59.17 | 64.46 | 71.89 | 70.72 | 66.71 | 67.20 | 11.20 | 0.278 |
| 半胱氨酸Cys | 90.11a | 76.19abc | 59.68c | 66.44bc | 83.97ab | 82.12ab | 73.02abc | 90.58a | 67.91bc | 58.90c | 74.86 | 17.80 | 0.002 |
| 谷氨酸Glu | 64.83 | 61.96 | 69.43 | 60.13 | 55.08 | 65.99 | 58.74 | 66.04 | 58.26 | 62.28 | 62.46 | 17.17 | 0.959 |
| 甘氨酸Gly | 95.60 | 70.93 | 73.63 | 64.59 | 76.18 | 72.57 | 61.86 | 70.01 | 69.59 | 67.33 | 71.71 | 17.42 | 0.139 |
| 脯氨酸Pro | 78.52a | 64.95bc | 68.96abc | 63.64bc | 65.75bc | 72.48ab | 64.59bc | 76.12ab | 68.31abc | 58.58c | 68.30 | 10.66 | 0.027 |
| 丝氨酸Ser | 86.22 | 77.31 | 79.68 | 72.46 | 68.99 | 83.26 | 74.49 | 71.83 | 75.45 | 79.38 | 77.00 | 13.33 | 0.524 |
| 酪氨酸Tyr | 77.39 | 70.24 | 76.82 | 72.37 | 66.57 | 78.59 | 71.11 | 80.70 | 77.24 | 70.88 | 74.40 | 16.82 | 0.945 |
3 讨论
3.1 玉米的常规营养成分分析
3.2 快速型黄羽肉鸡对玉米的AME和AMEn
3.3 快速型黄羽肉鸡标准回肠氨基酸消化率评定
表9 玉米中氨基酸含量的比较Table 9 Comparison of amino acid contents % |
| 项目 Items | 《中国饲料成分及营养价值表 (2022年第33版)》[15]中玉米的报道值 Reported values of corn in Table of Feed Composition and Nutritive Value in China (33rd ed, 2022)[15] | 本试验所测玉米平均值 Means of corn measured in this experiment |
|---|---|---|
| 精氨酸Arg | 0.37 | 0.30 |
| 组氨酸His | 0.23 | 0.21 |
| 异亮氨酸Ile | 0.27 | 0.20 |
| 亮氨酸Leu | 0.96 | 0.70 |
| 赖氨酸Lys | 0.24 | 0.26 |
| 蛋氨酸Met | 0.17 | 0.09 |
| 苯丙氨酸Phe | 0.37 | 0.27 |
| 酪氨酸Tyr | 0.31 | 0.30 |
| 苏氨酸Thr | 0.29 | 0.22 |
| 色氨酸Trp | 0.06 | 0.29 |
| 缬氨酸Val | 0.35 | 0.30 |

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