草业学报 ›› 2021, Vol. 30 ›› Issue (1): 159-169.DOI: 10.11686/cyxb2020071
刘桃桃1(), 王思伟2(), 李秋凤1(), 曹玉凤1(), 王昆2(), 王丽娟3, 沈宜钊1, 孙雪丽1, 张美琦1, 闫金玲1, 李建国1, 高艳霞1, 王美美1
收稿日期:
2020-02-21
修回日期:
2020-05-07
出版日期:
2021-01-20
发布日期:
2021-01-08
通讯作者:
李秋凤,曹玉凤,王昆
作者简介:
Corresponding author. E-mail: kunwl@126.com基金资助:
Tao-tao LIU1(), Si-wei WANG2(), Qiu-feng LI1(), Yu-feng CAO1(), Kun WANG2(), Li-juan WANG3, Yi-zhao SHEN1, Xue-li SUN1, Mei-qi ZHANG1, Jin-ling YAN1, Jian-guo LI1, Yan-xia GAO1, Mei-mei WANG1
Received:
2020-02-21
Revised:
2020-05-07
Online:
2021-01-20
Published:
2021-01-08
Contact:
Qiu-feng LI,Yu-feng CAO,Kun WANG
摘要:
本试验旨在利用尼龙袋法比较不同品种全株玉米青贮前后瘤胃降解特性的差异。试验采用2×3双因素试验设计,选择玉米7367号、玉米7377号、玉米7387号3个全株玉米品种为研究对象,采用尼龙袋法比较3种全株玉米青贮前和青贮后的营养成分和瘤胃降解特性,旨在探讨适合河北省种植的全株玉米青贮品种。结果表明:1)青贮前玉米7377的粗蛋白(CP)和非蛋白氮(NPN)含量显著高于玉米7367和玉米7387(P<0.05);玉米7677和玉米7377的中性洗涤纤维(NDF)含量显著低于玉米7387(P<0.05);玉米7677的酸性洗涤纤维(ADF)含量显著低于玉米7377和玉米7387(P<0.05)。与青贮前同品种全株玉米相比,3种全株玉米青贮后的CP、粗脂肪(EE)、粗灰分(Ash)、钙(Ca)、磷(P)、NPN含量显著提高(P<0.05),NDF含量显著下降。玉米7367青贮的CP和NPN含量显著高于玉米7377青贮和7387青贮(P<0.05);玉米7677青贮和7377青贮的NDF和ADF含量显著低于玉米7387青贮(P<0.05)。2)不同品种全株玉米青贮前的DM、CP、NDF、ADF瘤胃降解率有显著差异,玉米7367的干物质(DM)和NDF有效降解率显著高于玉米7377和玉米7387(P<0.05);玉米7377的CP有效降解率显著高于玉米7367和玉米7387(P<0.05)。青贮处理能显著提高3种全株玉米DM、CP、NDF和ADF的快速降解部分(P<0.05),降低其慢速降解部分(P<0.05),显著提高其有效降解率(P<0.05)。玉米7367青贮的DM、CP、NDF、ADF有效降解率显著高于玉米7377和玉米7387(P<0.05)。综合表明青贮处理能很好地保存3种全株玉米的营养成分,显著提高DM、CP、NDF和ADF的瘤胃降解率;玉米7367青贮前和青贮后的营养成分和瘤胃降解率显著高于玉米7377和玉米7387,在本试验中是比较适合河北省种植的全株玉米青贮品种。
刘桃桃, 王思伟, 李秋凤, 曹玉凤, 王昆, 王丽娟, 沈宜钊, 孙雪丽, 张美琦, 闫金玲, 李建国, 高艳霞, 王美美. 利用尼龙袋法比较3个全株玉米品种青贮前后肉牛瘤胃降解特性[J]. 草业学报, 2021, 30(1): 159-169.
Tao-tao LIU, Si-wei WANG, Qiu-feng LI, Yu-feng CAO, Kun WANG, Li-juan WANG, Yi-zhao SHEN, Xue-li SUN, Mei-qi ZHANG, Jin-ling YAN, Jian-guo LI, Yan-xia GAO, Mei-mei WANG. Ruminal degradation characteristics of whole maize plant material before and after ensiling in beef cattle as determined in situ using the nylon bag method[J]. Acta Prataculturae Sinica, 2021, 30(1): 159-169.
原料 Ingredients | 含量Content (%DM) | 营养水平Nutrient level | 含量Content |
---|---|---|---|
玉米秸秆青贮 Whole plant corn | 40.00 | 泌乳净能NEL (MJ·kg-1) | 6.75 |
玉米 Corn | 42.02 | 粗蛋白质 Crude protein (%DM) | 13.00 |
豆粕 Soybean meal | 3.86 | 中性洗涤纤维Neutral detergent fiber (%DM) | 38.40 |
棉粕 Cottonseed meal | 3.60 | 酸性洗涤纤维 Acid detergent fiber (%DM) | 25.60 |
干酒糟及其可溶物 Distillers grains with solubles (DDGS) | 8.85 | 钙Calcium (%DM) | 0.64 |
石粉 Limestone | 0.44 | 磷Phosphorus (%DM) | 0.38 |
预混料1) Premix | 0.14 | ||
小苏打 NaHCO3 | 0.79 | ||
食盐 NaCl | 0.30 | ||
合计 Total | 100.00 |
表1 基础饲粮组成及营养水平
Table 1 Composition and nutrient levels of basal diets
原料 Ingredients | 含量Content (%DM) | 营养水平Nutrient level | 含量Content |
---|---|---|---|
玉米秸秆青贮 Whole plant corn | 40.00 | 泌乳净能NEL (MJ·kg-1) | 6.75 |
玉米 Corn | 42.02 | 粗蛋白质 Crude protein (%DM) | 13.00 |
豆粕 Soybean meal | 3.86 | 中性洗涤纤维Neutral detergent fiber (%DM) | 38.40 |
棉粕 Cottonseed meal | 3.60 | 酸性洗涤纤维 Acid detergent fiber (%DM) | 25.60 |
干酒糟及其可溶物 Distillers grains with solubles (DDGS) | 8.85 | 钙Calcium (%DM) | 0.64 |
石粉 Limestone | 0.44 | 磷Phosphorus (%DM) | 0.38 |
预混料1) Premix | 0.14 | ||
小苏打 NaHCO3 | 0.79 | ||
食盐 NaCl | 0.30 | ||
合计 Total | 100.00 |
项目 Items | 处理 Treatments | 品种 Varieties | 标准误 SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
粗蛋白Crude protein (CP) | 青贮前Before silage | 7.27Ab | 8.16Ba | 6.61Bc | 0.035 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 9.42Aa | 9.06Ab | 8.55Ac | |||||
非蛋白氮 Nonprotein nitrogen (NPN) | 青贮前Before silage | 21.84Bb | 26.84Ba | 23.70Bb | 0.493 | <0.001 | 0.695 | <0.001 |
青贮后After silage | 48.76Aa | 44.13Ac | 47.75Ab | |||||
中性洗涤纤维Neutral detergent fiber (NDF) | 青贮前Before silage | 48.14Ab | 47.92Ab | 49.48Aa | 0.473 | 0.002 | <0.001 | 0.422 |
青贮后After silage | 43.90Bb | 44.31Bb | 46.54Ba | |||||
酸性洗涤纤维Acid detergent fiber (ADF) | 青贮前Before silage | 23.39Ab | 24.71Aa | 24.49Aa | 0.312 | 0.001 | 0.012 | 0.028 |
青贮后After silage | 24.09Ab | 24.27Ab | 25.90Aa | |||||
粗脂肪Ether extract (EE) | 青贮前Before silage | 2.19Bb | 2.24Ba | 2.22Bab | 0.052 | <0.001 | 0.082 | 0.012 |
青贮后After silage | 3.24Aa | 2.96Ab | 3.11Aa | |||||
粗灰分Crude ash (Ash) | 青贮前Before silage | 3.82Bb | 4.16Ba | 4.18Ba | 0.025 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 5.50Ab | 5.41Ac | 6.04Aa | |||||
钙Calcium (Ca) | 青贮前Before silage | 0.28Ba | 0.29Ba | 0.28Ba | 0.003 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 0.36Ac | 0.38Ab | 0.45Aa | |||||
磷Phosphorus (P) | 青贮前Before silage | 0.15Bb | 0.17Ba | 0.17Ba | 0.002 | <0.001 | <0.001 | 0.088 |
青贮后After silage | 0.19Ab | 0.20Ab | 0.21Aa |
表2 3个全株玉米品种青贮前后的常规营养成分
Table2 The contents of normal nutrient composition of three varieties of whole plant corn before and after ensiling (%DM)
项目 Items | 处理 Treatments | 品种 Varieties | 标准误 SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
粗蛋白Crude protein (CP) | 青贮前Before silage | 7.27Ab | 8.16Ba | 6.61Bc | 0.035 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 9.42Aa | 9.06Ab | 8.55Ac | |||||
非蛋白氮 Nonprotein nitrogen (NPN) | 青贮前Before silage | 21.84Bb | 26.84Ba | 23.70Bb | 0.493 | <0.001 | 0.695 | <0.001 |
青贮后After silage | 48.76Aa | 44.13Ac | 47.75Ab | |||||
中性洗涤纤维Neutral detergent fiber (NDF) | 青贮前Before silage | 48.14Ab | 47.92Ab | 49.48Aa | 0.473 | 0.002 | <0.001 | 0.422 |
青贮后After silage | 43.90Bb | 44.31Bb | 46.54Ba | |||||
酸性洗涤纤维Acid detergent fiber (ADF) | 青贮前Before silage | 23.39Ab | 24.71Aa | 24.49Aa | 0.312 | 0.001 | 0.012 | 0.028 |
青贮后After silage | 24.09Ab | 24.27Ab | 25.90Aa | |||||
粗脂肪Ether extract (EE) | 青贮前Before silage | 2.19Bb | 2.24Ba | 2.22Bab | 0.052 | <0.001 | 0.082 | 0.012 |
青贮后After silage | 3.24Aa | 2.96Ab | 3.11Aa | |||||
粗灰分Crude ash (Ash) | 青贮前Before silage | 3.82Bb | 4.16Ba | 4.18Ba | 0.025 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 5.50Ab | 5.41Ac | 6.04Aa | |||||
钙Calcium (Ca) | 青贮前Before silage | 0.28Ba | 0.29Ba | 0.28Ba | 0.003 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 0.36Ac | 0.38Ab | 0.45Aa | |||||
磷Phosphorus (P) | 青贮前Before silage | 0.15Bb | 0.17Ba | 0.17Ba | 0.002 | <0.001 | <0.001 | 0.088 |
青贮后After silage | 0.19Ab | 0.20Ab | 0.21Aa |
项目 Items | 处理 Treatments | 品种Varieties | 标准误 SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
4 h (%) | 青贮前Before silage | 36.80Ba | 36.13Ba | 35.26Ba | 0.938 | <0.001 | 0.011 | 0.069 |
青贮后After silage | 48.50Aa | 43.27Ac | 44.63Ab | |||||
8 h (%) | 青贮前Before silage | 39.14Bb | 41.89Ba | 39.22Bb | 0.857 | <0.001 | 0.074 | <0.001 |
青贮后After silage | 55.25Aa | 48.91Ac | 52.20Ab | |||||
16 h (%) | 青贮前Before silage | 55.77Ba | 54.01Aa | 53.26Aa | 1.232 | 0.004 | 0.024 | 0.169 |
青贮后After silage | 61.13Aa | 54.85Ac | 58.35Ab | |||||
24 h (%) | 青贮前Before silage | 66.27Aa | 64.59Ab | 64.34Ab | 0.443 | <0.001 | <0.001 | 0.003 |
青贮后After silage | 66.08Aa | 60.58Bb | 60.49Bb | |||||
36 h (%) | 青贮前Before silage | 72.35Aa | 72.19Aa | 68.47Ab | 1.090 | 0.269 | 0.003 | 0.035 |
青贮后After silage | 73.01Aa | 70.80Ab | 71.01Ab | |||||
48 h (%) | 青贮前Before silage | 77.05Aa | 74.68Ab | 74.34Ab | 1.068 | 0.540 | 0.050 | 0.958 |
青贮后After silage | 77.66Aa | 74.89Aa | 75.13Aa | |||||
72 h (%) | 青贮前Before silage | 81.94Aa | 80.85Aab | 79.60Ab | 0.412 | 0.131 | 0.006 | 0.146 |
青贮后After silage | 80.68Ba | 80.32Aa | 79.92Aa | |||||
a (%) | 青贮前Before silage | 24.40Bb | 26.02Ba | 24.71Bb | 0.965 | <0.001 | 0.145 | 0.010 |
青贮后After silage | 43.93Aa | 38.24Ac | 41.08Ab | |||||
b (%) | 青贮前Before silage | 59.63Aa | 56.83Aa | 56.97Aa | 1.254 | <0.001 | 0.040 | 0.001 |
青贮后After silage | 40.25Bc | 49.70Ba | 45.00Bb | |||||
c (%·h-1) | 青贮前Before silage | 0.046Aa | 0.044Aa | 0.044Aa | 0.000 | <0.001 | <0.001 | 0.005 |
青贮后After silage | 0.035Ba | 0.027Bb | 0.028Bb | |||||
ED (%) | 青贮前Before silage | 63.04Ba | 62.26Ab | 60.99Bc | 0.482 | <0.001 | 0.001 | 0.048 |
青贮后After silage | 67.49Aa | 64.16Ab | 64.97Ab |
表3 3个全株玉米品种青贮前后的DM降解率及降解参数
Table 3 DM degradation rate and degradation parameters of three varieties of whole plant corn before and after ensiling
项目 Items | 处理 Treatments | 品种Varieties | 标准误 SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
4 h (%) | 青贮前Before silage | 36.80Ba | 36.13Ba | 35.26Ba | 0.938 | <0.001 | 0.011 | 0.069 |
青贮后After silage | 48.50Aa | 43.27Ac | 44.63Ab | |||||
8 h (%) | 青贮前Before silage | 39.14Bb | 41.89Ba | 39.22Bb | 0.857 | <0.001 | 0.074 | <0.001 |
青贮后After silage | 55.25Aa | 48.91Ac | 52.20Ab | |||||
16 h (%) | 青贮前Before silage | 55.77Ba | 54.01Aa | 53.26Aa | 1.232 | 0.004 | 0.024 | 0.169 |
青贮后After silage | 61.13Aa | 54.85Ac | 58.35Ab | |||||
24 h (%) | 青贮前Before silage | 66.27Aa | 64.59Ab | 64.34Ab | 0.443 | <0.001 | <0.001 | 0.003 |
青贮后After silage | 66.08Aa | 60.58Bb | 60.49Bb | |||||
36 h (%) | 青贮前Before silage | 72.35Aa | 72.19Aa | 68.47Ab | 1.090 | 0.269 | 0.003 | 0.035 |
青贮后After silage | 73.01Aa | 70.80Ab | 71.01Ab | |||||
48 h (%) | 青贮前Before silage | 77.05Aa | 74.68Ab | 74.34Ab | 1.068 | 0.540 | 0.050 | 0.958 |
青贮后After silage | 77.66Aa | 74.89Aa | 75.13Aa | |||||
72 h (%) | 青贮前Before silage | 81.94Aa | 80.85Aab | 79.60Ab | 0.412 | 0.131 | 0.006 | 0.146 |
青贮后After silage | 80.68Ba | 80.32Aa | 79.92Aa | |||||
a (%) | 青贮前Before silage | 24.40Bb | 26.02Ba | 24.71Bb | 0.965 | <0.001 | 0.145 | 0.010 |
青贮后After silage | 43.93Aa | 38.24Ac | 41.08Ab | |||||
b (%) | 青贮前Before silage | 59.63Aa | 56.83Aa | 56.97Aa | 1.254 | <0.001 | 0.040 | 0.001 |
青贮后After silage | 40.25Bc | 49.70Ba | 45.00Bb | |||||
c (%·h-1) | 青贮前Before silage | 0.046Aa | 0.044Aa | 0.044Aa | 0.000 | <0.001 | <0.001 | 0.005 |
青贮后After silage | 0.035Ba | 0.027Bb | 0.028Bb | |||||
ED (%) | 青贮前Before silage | 63.04Ba | 62.26Ab | 60.99Bc | 0.482 | <0.001 | 0.001 | 0.048 |
青贮后After silage | 67.49Aa | 64.16Ab | 64.97Ab |
项目 Items | 处理 Treatments | 品种Varieties | 标准误SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
4 h (%) | 青贮前Before silage | 34.72Bb | 37.72Ba | 32.40Bb | 0.539 | <0.001 | <0.001 | 0.001 |
青贮后After silage | 45.17Aa | 44.55Aa | 37.53Ab | |||||
8 h (%) | 青贮前Before silage | 37.34Bc | 42.78Ba | 38.96Bb | 0.659 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 51.92Aa | 49.09Aa | 42.26Ab | |||||
16 h (%) | 青贮前Before silage | 46.49Ba | 45.99Ba | 47.49Ba | 0.550 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 58.98Aa | 54.88Ab | 50.17Ac | |||||
24 h (%) | 青贮前Before silage | 53.47Ba | 53.69Ba | 51.87Aa | 0.576 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 64.40Aa | 61.13Ab | 54.52Ac | |||||
36 h (%) | 青贮前Before silage | 61.64Bab | 63.38Aa | 58.28Bb | 0.736 | <0.001 | <0.001 | 0.039 |
青贮后After silage | 69.86Aa | 67.52Ab | 63.22Ab | |||||
48 h (%) | 青贮前Before silage | 68.16Ba | 69.09Ba | 62.86Bb | 0.643 | <0.001 | <0.001 | 0.013 |
青贮后After silage | 74.68Aa | 71.41Ab | 66.01Ac | |||||
72 h (%) | 青贮前Before silage | 71.62Ba | 70.86Bb | 68.53Bc | 0.177 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 78.83Aa | 75.75Ab | 73.20Ac | |||||
a (%) | 青贮前Before silage | 27.59Bb | 32.17Ba | 27.68Bb | 0.523 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 40.18Aa | 39.73Aa | 32.90Ab | |||||
b (%) | 青贮前Before silage | 50.77Aa | 46.61Aab | 44.13Bb | 0.704 | <0.001 | 0.029 | <0.001 |
青贮后After silage | 40.65Bb | 40.62Bb | 46.28Aa | |||||
c (%·h-1) | 青贮前Before silage | 0.031Bab | 0.028Ab | 0.034Aa | 0.001 | 0.157 | 0.009 | 0.001 |
青贮后After silage | 0.038Aa | 0.031Aab | 0.028Bb | |||||
ED (%) | 青贮前Before silage | 55.52Bb | 56.79Ba | 53.18Bc | 0.328 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 64.77Aa | 62.25Ab | 57.31Ac |
表4 3个全株玉米品种青贮前后的CP降解率及降解参数
Table 4 CP degradation rate and degradation parameters of three varieties of whole plant corn before and after ensiling
项目 Items | 处理 Treatments | 品种Varieties | 标准误SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
4 h (%) | 青贮前Before silage | 34.72Bb | 37.72Ba | 32.40Bb | 0.539 | <0.001 | <0.001 | 0.001 |
青贮后After silage | 45.17Aa | 44.55Aa | 37.53Ab | |||||
8 h (%) | 青贮前Before silage | 37.34Bc | 42.78Ba | 38.96Bb | 0.659 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 51.92Aa | 49.09Aa | 42.26Ab | |||||
16 h (%) | 青贮前Before silage | 46.49Ba | 45.99Ba | 47.49Ba | 0.550 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 58.98Aa | 54.88Ab | 50.17Ac | |||||
24 h (%) | 青贮前Before silage | 53.47Ba | 53.69Ba | 51.87Aa | 0.576 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 64.40Aa | 61.13Ab | 54.52Ac | |||||
36 h (%) | 青贮前Before silage | 61.64Bab | 63.38Aa | 58.28Bb | 0.736 | <0.001 | <0.001 | 0.039 |
青贮后After silage | 69.86Aa | 67.52Ab | 63.22Ab | |||||
48 h (%) | 青贮前Before silage | 68.16Ba | 69.09Ba | 62.86Bb | 0.643 | <0.001 | <0.001 | 0.013 |
青贮后After silage | 74.68Aa | 71.41Ab | 66.01Ac | |||||
72 h (%) | 青贮前Before silage | 71.62Ba | 70.86Bb | 68.53Bc | 0.177 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 78.83Aa | 75.75Ab | 73.20Ac | |||||
a (%) | 青贮前Before silage | 27.59Bb | 32.17Ba | 27.68Bb | 0.523 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 40.18Aa | 39.73Aa | 32.90Ab | |||||
b (%) | 青贮前Before silage | 50.77Aa | 46.61Aab | 44.13Bb | 0.704 | <0.001 | 0.029 | <0.001 |
青贮后After silage | 40.65Bb | 40.62Bb | 46.28Aa | |||||
c (%·h-1) | 青贮前Before silage | 0.031Bab | 0.028Ab | 0.034Aa | 0.001 | 0.157 | 0.009 | 0.001 |
青贮后After silage | 0.038Aa | 0.031Aab | 0.028Bb | |||||
ED (%) | 青贮前Before silage | 55.52Bb | 56.79Ba | 53.18Bc | 0.328 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 64.77Aa | 62.25Ab | 57.31Ac |
项目 Items | 处理 Treatments | 品种Varieties | 标准误SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
4 h (%) | 青贮前Before silage | 14.41Ba | 10.06Bb | 13.66Aa | 0.468 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 23.34Aa | 19.31Ab | 14.73Ac | |||||
8 h (%) | 青贮前Before silage | 21.72Ba | 15.32Bb | 16.78Bb | 0.974 | <0.001 | <0.001 | 0.036 |
青贮后After silage | 32.70Aa | 24.08Ab | 22.01Ab | |||||
16 h (%) | 青贮前Before silage | 27.57Ba | 21.72Bb | 23.50Bb | 0.885 | <0.001 | 0.001 | 0.392 |
青贮后After silage | 37.13Aa | 33.65Aa | 33.93Aa | |||||
24 h (%) | 青贮前Before silage | 33.92Ba | 29.17Bb | 29.80Bb | 1.142 | <0.001 | <0.001 | 0.040 |
青贮后After silage | 49.31Aa | 38.39Ab | 40.66Ab | |||||
36 h (%) | 青贮前Before silage | 46.34Ba | 43.51Ba | 44.28Ba | 1.005 | <0.001 | <0.001 | 0.009 |
青贮后After silage | 57.17Aa | 49.83Ab | 48.08Ab | |||||
48 h (%) | 青贮前Before silage | 52.27Ba | 52.17Aa | 48.21Ba | 1.671 | <0.001 | 0.006 | 0.034 |
青贮后After silage | 62.25Aa | 54.41Ab | 55.90Ab | |||||
72 h (%) | 青贮前Before silage | 60.19Ba | 60.76Ba | 59.28Aa | 1.037 | <0.001 | 0.048 | 0.135 |
青贮后After silage | 67.91Aa | 65.10Ab | 63.96Ab | |||||
a (%) | 青贮前Before silage | 9.57Ba | 3.78Bb | 7.78Ba | 0.626 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 16.96Aa | 14.28Ab | 8.40Ac | |||||
b (%) | 青贮前Before silage | 65.80Aa | 81.62Aa | 78.27Aa | 3.237 | <0.001 | 0.006 | 0.485 |
青贮后After silage | 56.32Bb | 65.67Ba | 62.08Ba | |||||
c (%·h-1) | 青贮前Before silage | 0.021Ba | 0.018Aa | 0.016Ba | 0.002 | <0.001 | 0.001 | 0.009 |
青贮后After silage | 0.034Aa | 0.020Ab | 0.031Aa | |||||
ED (%) | 青贮前Before silage | 39.70Ba | 37.55Bb | 37.11Bb | 0.702 | <0.001 | <0.001 | 0.004 |
青贮后After silage | 49.39Aa | 43.69Ab | 42.45Ab |
表5 3种全株玉米青贮前后的NDF降解率及降解参数
Table 5 NDF degradation rate and degradation parameters of three varieties of whole plant corn before and after ensiling
项目 Items | 处理 Treatments | 品种Varieties | 标准误SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
4 h (%) | 青贮前Before silage | 14.41Ba | 10.06Bb | 13.66Aa | 0.468 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 23.34Aa | 19.31Ab | 14.73Ac | |||||
8 h (%) | 青贮前Before silage | 21.72Ba | 15.32Bb | 16.78Bb | 0.974 | <0.001 | <0.001 | 0.036 |
青贮后After silage | 32.70Aa | 24.08Ab | 22.01Ab | |||||
16 h (%) | 青贮前Before silage | 27.57Ba | 21.72Bb | 23.50Bb | 0.885 | <0.001 | 0.001 | 0.392 |
青贮后After silage | 37.13Aa | 33.65Aa | 33.93Aa | |||||
24 h (%) | 青贮前Before silage | 33.92Ba | 29.17Bb | 29.80Bb | 1.142 | <0.001 | <0.001 | 0.040 |
青贮后After silage | 49.31Aa | 38.39Ab | 40.66Ab | |||||
36 h (%) | 青贮前Before silage | 46.34Ba | 43.51Ba | 44.28Ba | 1.005 | <0.001 | <0.001 | 0.009 |
青贮后After silage | 57.17Aa | 49.83Ab | 48.08Ab | |||||
48 h (%) | 青贮前Before silage | 52.27Ba | 52.17Aa | 48.21Ba | 1.671 | <0.001 | 0.006 | 0.034 |
青贮后After silage | 62.25Aa | 54.41Ab | 55.90Ab | |||||
72 h (%) | 青贮前Before silage | 60.19Ba | 60.76Ba | 59.28Aa | 1.037 | <0.001 | 0.048 | 0.135 |
青贮后After silage | 67.91Aa | 65.10Ab | 63.96Ab | |||||
a (%) | 青贮前Before silage | 9.57Ba | 3.78Bb | 7.78Ba | 0.626 | <0.001 | <0.001 | <0.001 |
青贮后After silage | 16.96Aa | 14.28Ab | 8.40Ac | |||||
b (%) | 青贮前Before silage | 65.80Aa | 81.62Aa | 78.27Aa | 3.237 | <0.001 | 0.006 | 0.485 |
青贮后After silage | 56.32Bb | 65.67Ba | 62.08Ba | |||||
c (%·h-1) | 青贮前Before silage | 0.021Ba | 0.018Aa | 0.016Ba | 0.002 | <0.001 | 0.001 | 0.009 |
青贮后After silage | 0.034Aa | 0.020Ab | 0.031Aa | |||||
ED (%) | 青贮前Before silage | 39.70Ba | 37.55Bb | 37.11Bb | 0.702 | <0.001 | <0.001 | 0.004 |
青贮后After silage | 49.39Aa | 43.69Ab | 42.45Ab |
项目 Items | 处理 Treatments | 品种Varieties | 标准误SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
4 h (%) | 青贮前Before silage | 10.03Ba | 10.06Aa | 8.05Ab | 0.349 | 0.090 | <0.001 | 0.001 |
青贮后After silage | 12.67Aa | 11.05Ab | 7.09Ac | |||||
8 h (%) | 青贮前Before silage | 14.51Ba | 14.88Ba | 13.07Bb | 0.428 | <0.001 | 0.004 | 0.026 |
青贮后After silage | 18.31Aa | 16.62Ab | 16.67Ab | |||||
16 h (%) | 青贮前Before silage | 22.02Ba | 19.96Bb | 20.13Ab | 0.648 | <0.001 | 0.003 | 0.210 |
青贮后After silage | 27.60Aa | 25.66Aab | 23.68Ab | |||||
24 h (%) | 青贮前Before silage | 27.86Ba | 27.47Ba | 26.15Bb | 0.347 | <0.001 | 0.001 | 0.047 |
青贮后After silage | 30.84Ab | 32.41Aa | 30.12Ab | |||||
36 h (%) | 青贮前Before silage | 36.57Bc | 39.53Ab | 41.94Aa | 0.641 | 0.129 | 0.727 | <0.001 |
青贮后After silage | 41.47Aa | 37.72Ab | 36.29Bb | |||||
48 h (%) | 青贮前Before silage | 45.98Aa | 47.23Aa | 47.47Aa | 1.385 | 0.290 | 0.669 | 0.176 |
青贮后After silage | 47.54Aa | 44.35Aa | 45.70Aa | |||||
72 h (%) | 青贮前Before silage | 56.01Bb | 56.79Aab | 58.36Aa | 0.571 | 0.458 | 0.109 | 0.001 |
青贮后After silage | 59.81Aa | 57.61Aa | 54.82Bb | |||||
a (%) | 青贮前Before silage | 5.81Ba | 4.89Bb | 2.21Bc | 0.045 | <0.001 | <0.001 | 0.243 |
青贮后After silage | 9.24Aa | 7.95Aa | 4.16Ab | |||||
b (%) | 青贮前Before silage | 81.42Aa | 80.49Aa | 81.58Aa | 2.548 | <0.001 | 0.094 | 0.081 |
青贮后After silage | 75.99Ba | 70.82Ba | 64.36Bb | |||||
c (%·h-1) | 青贮前Before silage | 0.014Aa | 0.015Aa | 0.017Ba | 0.001 | 0.006 | 0.001 | 0.090 |
青贮后After silage | 0.015Ab | 0.016Ab | 0.021Aa | |||||
ED (%) | 青贮前Before silage | 34.61Ba | 35.02Aa | 34.78Aa | 0.304 | 0.002 | <0.001 | <0.001 |
青贮后After silage | 38.05Aa | 35.56Ab | 33.67Ac |
表6 3个全株玉米品种青贮前后的ADF降解率及降解参数
Table 6 ADF degradation rate and degradation parameters of three varieties of whole plant corn before and after ensiling
项目 Items | 处理 Treatments | 品种Varieties | 标准误SEM | 双因素分析P值P-value of two-way ANOVA | ||||
---|---|---|---|---|---|---|---|---|
玉米7367 Corn 7367 | 玉米7377 Corn 7377 | 玉米7387 Corn 7387 | 处理 Treatments | 品种 Varieties | 处理×品种 Treatments×varieties | |||
4 h (%) | 青贮前Before silage | 10.03Ba | 10.06Aa | 8.05Ab | 0.349 | 0.090 | <0.001 | 0.001 |
青贮后After silage | 12.67Aa | 11.05Ab | 7.09Ac | |||||
8 h (%) | 青贮前Before silage | 14.51Ba | 14.88Ba | 13.07Bb | 0.428 | <0.001 | 0.004 | 0.026 |
青贮后After silage | 18.31Aa | 16.62Ab | 16.67Ab | |||||
16 h (%) | 青贮前Before silage | 22.02Ba | 19.96Bb | 20.13Ab | 0.648 | <0.001 | 0.003 | 0.210 |
青贮后After silage | 27.60Aa | 25.66Aab | 23.68Ab | |||||
24 h (%) | 青贮前Before silage | 27.86Ba | 27.47Ba | 26.15Bb | 0.347 | <0.001 | 0.001 | 0.047 |
青贮后After silage | 30.84Ab | 32.41Aa | 30.12Ab | |||||
36 h (%) | 青贮前Before silage | 36.57Bc | 39.53Ab | 41.94Aa | 0.641 | 0.129 | 0.727 | <0.001 |
青贮后After silage | 41.47Aa | 37.72Ab | 36.29Bb | |||||
48 h (%) | 青贮前Before silage | 45.98Aa | 47.23Aa | 47.47Aa | 1.385 | 0.290 | 0.669 | 0.176 |
青贮后After silage | 47.54Aa | 44.35Aa | 45.70Aa | |||||
72 h (%) | 青贮前Before silage | 56.01Bb | 56.79Aab | 58.36Aa | 0.571 | 0.458 | 0.109 | 0.001 |
青贮后After silage | 59.81Aa | 57.61Aa | 54.82Bb | |||||
a (%) | 青贮前Before silage | 5.81Ba | 4.89Bb | 2.21Bc | 0.045 | <0.001 | <0.001 | 0.243 |
青贮后After silage | 9.24Aa | 7.95Aa | 4.16Ab | |||||
b (%) | 青贮前Before silage | 81.42Aa | 80.49Aa | 81.58Aa | 2.548 | <0.001 | 0.094 | 0.081 |
青贮后After silage | 75.99Ba | 70.82Ba | 64.36Bb | |||||
c (%·h-1) | 青贮前Before silage | 0.014Aa | 0.015Aa | 0.017Ba | 0.001 | 0.006 | 0.001 | 0.090 |
青贮后After silage | 0.015Ab | 0.016Ab | 0.021Aa | |||||
ED (%) | 青贮前Before silage | 34.61Ba | 35.02Aa | 34.78Aa | 0.304 | 0.002 | <0.001 | <0.001 |
青贮后After silage | 38.05Aa | 35.56Ab | 33.67Ac |
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