| 全株玉米青贮营养品质的紧实度效应 |
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| 引用本文： | 王旭哲,岳亚飞,张凡凡,马春晖.全株玉米青贮营养品质的紧实度效应[J].草业科学,2016,33(9):1893-1900. |
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| 作者姓名： | 王旭哲 岳亚飞 张凡凡 马春晖 |
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| 作者单位： | 石河子大学动物科技学院,新疆 石河子,832003;石河子大学动物科技学院,新疆 石河子,832003;石河子大学动物科技学院,新疆 石河子,832003;石河子大学动物科技学院,新疆 石河子,832003 |
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| 基金项目： | 国家自然科学基金项目(31460637)，国家牧草产业技术体系(CARS35) |
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| 摘 要： | 本研究旨在分析不同紧实度对全株玉米(Zea mays)青贮品质变化的影响,以便筛选出适宜的青贮紧实度。以新饲玉10号青贮玉米为材料,青贮装料密度设计为5个(350、400、500、600、700kg·m-3),分别在青贮制作完成后1、3、5、7、9、15、30、50d取样,测定青贮料的干物质(DM)、粗蛋白(CP)、中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)、水溶性碳水化合物(WSC)和pH,并动态监测开窖后各处理青贮内部温度变化规律,同时对比开窖前后的相对饲喂价值(RFV)。结果表明,青贮时间和紧实度的交互作用仅对CP、ADF和pH有极显著影响(P0.01),对DM、NDF和WSC均无显著影响(P0.05)。处理600kg·m-3的pH最低且CP含量最高;处理700kg·m-3的DM、WSC以及RFV值含量最高,NDF及ADF含量最低。处理600kg·m-3有氧暴露后稳定的时间显著高于其它处理(P0.05),达到100h。同时,有氧暴露时间与温度呈现出单调递增的趋势,且相关性显著(P0.05)。随着紧实度的增大(350~600kg·m-3),青贮饲料的品质增加,有氧稳定性提高;当紧实度为600kg·m-3时,品质较700kg·m-3变化不显著,600kg·m-3为最佳紧实度,建议采用。
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| 关 键 词： | 紧实度 玉米青贮 营养品质 |
The compaction effect of nutritional quality of whole plant corn silage |
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| Wang Xu-zhe,Yue Ya-fei,Zhang Fan-fan,Ma Chun-hui.The compaction effect of nutritional quality of whole plant corn silage[J].Pratacultural Science,2016,33(9):1893-1900. |
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| Authors: | Wang Xu-zhe Yue Ya-fei Zhang Fan-fan Ma Chun-hui |
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| Abstract: | In this study,the whole plant corn (Zea mays)silage nutritional quality at different compactions was analyzed to determine the appropriate compaction of silage.The treatments used Xinsiyu 10 for silage materials with five compaction degrees (350,400,500,600 and 700 kg?m-3 ).Sampling and determination of the DM, CP,NDF,ADF,WSC and RFV of silages were done on the 1 st,3rd,5th,7th,9th,15th,30th and 50th day after ensiling.Dynamic monitoring of the temperature change of each silage treatment was also measured after opening silo.Results indicated that DM,CP,NDF,ADF,and WSC content and pH value from compaction de-gree of corn silage decreased significantly than before ensiling (P<0.05).Silage time had a significant effect on above indicators (P<0.01).After opening silo,600 kg?m-3 had the lowest pH value,while the content of CP was the highest;DM,WSC and RFV of 700 kg?m-3 treatment was the highest,NDF and ADF was the low-est.The stable time after exposure to oxygen of treatment 600 kg?m-3 was significantly higher than other treatments (P<0.05),reaching 100 h.At the same time,there was a monotonic increasing trend of oxygen ex-posure time and temperature,and the correlation was significant (P<0.05).With the increasing of charge de-gree range (350~600 kg?m-3 ),the fermentation quality of the silage correspondingly increased.When com-paction degree reaching to 600 kg?m-3 ,the quality did not change significantly,suggesting that 600 kg?m-3is the best compaction. |
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| Keywords: | compaction corn silage nutritional quality |
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