Effect of Silage Time on Nutrient Contents of Cymbopogon citratus
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摘要:
目的 探究青贮时间对香茅草营养成分的影响,旨在确定适宜的青贮发酵时间,为合理青贮及充分提高香茅饲用价值提供科学依据。 方法 采用感官评价和国家标准方法,对不同青贮时间香茅样品的感官品质和营养成分进行评价和测定。 结果 香茅青贮1月后,其蛋白质、粗纤维含量显著上升,达到峰值,蛋白质从青贮前的5.48%提高至6.64%,粗纤维从青贮前的34.96%上升至36.65%,青贮2~4月蛋白质较稳定,为6.32%~6.39%,随后明显下降,粗纤维在随后的2~6月较稳定,含量为34.23%~35.77%;钙含量在青贮前4个月变化不明显,第5、6月时有显著提高;磷含量在青贮前5月,先下降后缓慢上升,第6月时达到最高。香茅青贮至3个月时,感官评分等级为1级,氨基酸、粗脂肪和灰分含量均达到最大值,粗蛋白含量保持在较高水平。3月后青贮草料的感官评分等级为2级,其中粗蛋白、氨基酸、粗灰分和粗脂肪等营养成分逐渐降低,草料品质变差。 结论 香茅青贮的时间以1~3月为宜,青贮至3月时其营养成分达到最佳值。 Abstract:Objective Effect of silage time on nutrient contents of Cymbopogon citratus was studied. Method Changes on the nutrients in C. citratus during silage was monitored periodically to determine the optimal fermentation period for cattle feeding. Result After one month of silage, the protein and crude fiber in citronella increased significantly and peaked with the protein content rose from 5.48% to 6.64% and the crude fiber from 34.96% to 36.65%. In 2-4 months, the protein content became stable ranging from 6.32% to 6.39% before a significant decline, while the crude fiber remained at 34.23%-35.77% for 2-6 months. During the initial 4 months there was no significant changes on the calcium in citronella, but the content increased significantly in 5-6 month. For the first 5 months, the phosphorus content decreased initially followed by a slow incline to reach a peak in the 6th month. Up till 3 months of silage, the fermented citronella was judged to have a Level 1 sensory score with maximized contents on amino acids, crude fat, and ash as well as a constantly high crude protein content. Afterward, however, the sensory score dropped to Level 2 with decreasing crude protein, amino acid, crude ash, and crude fat contents with a deteriorated quality. Conclusion It appeared that 1-3 month of silage would allow citronella to reach the highest nutrient level and prolonged storage could considerably ill-affect the forage quality. -
Key words:
- Cymbopogon citratus /
- nutrient content /
- silage time
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图 1 不同青贮时间对香茅蛋白质含量占比的影响
注:不同大写字母表示处理间差异极显著(P<0.01),不同小写字母表示处理间差异显著(P<0.05)。图2~7同。
Figure 1. Effect of silage time on protein content of citronella
Note: Data with diffrent capital letters indicate extremely significant difference at 0.01 level,lowercase letters indicate significant difference at 0.05 level.the same as Fig.2-7.
表 1 不同贮藏时间的青贮香茅感官评分
Table 1. Sensory scores on quality of citronella in silage
感官指标
Sernsory index贮藏时间
Silage time/月1 2 3 4 5 6 气味 Odor 14 14 14 10 10 10 结构 Structure 4 2 2 2 1 1 颜色 Color 1 1 0 0 0 0 总分 Total point 19 17 16 12 11 11 等级 Grade 1 1 1 2 2 2 表 2 青贮前香茅的营养成分
Table 2. Nutrient contents of citronella prior to silage
营养成分 Nutrient composition 含量 Content/% 蛋白质 Crude protein 5.48±0.08 氨基酸 Amino Acid 4.02±0.051 粗灰分 Crude ash 8.70±0.043 粗脂肪 Crude fat 1.52±0.017 粗纤维 Crude fiber 34.96±0.482 钙 Calcium 0.54±0.011 磷 Phosphorus 0.29±0.002 -
[1] 杨梦文, 赵琳静, 顾思怡, 等. 香茅化学成分及药理作用的研究进展 [J]. 中成药, 2020, 42(3):714−719. doi: 10.3969/j.issn.1001-1528.2020.03.031YANG M W, ZHAO L J, GU S Y, et al. Researchprogress on chemical constituents and pharmacological effects of citronella [J]. Chinese Traditional Patent Medicine, 2020, 42(3): 714−719.(in Chinese) doi: 10.3969/j.issn.1001-1528.2020.03.031 [2] 刘耀华, 马新耀, 程作慧, 等. 香茅精油对番茄早疫病菌的抑菌作用及抑菌机制 [J]. 应用生态学报, 2017, 28(9):3016−3022.LIU Y H, MA X Y, CHENG Z H, et al. The antimicrobial activity and mechanism of Cymbopogon citratus essential oil against Alternaria solani [J]. Chinese Journal of Applied Ecology, 2017, 28(9): 3016−3022.(in Chinese) [3] 吴维坚, 李珊珊, 杨敏, 等. 香茅属植物在国内外应用现状及福建省应用展望 [J]. 现代园艺, 2018(15):107−108.WU W J, LI S S, YANG M, et al. The application status of Citronella plants domestic and foreign and its application prospect in Fujian province[ [J]. Xiandai Horticulture, 2018(15): 107−108.(in Chinese) [4] 杨漓, 谷瑶, 曾永明, 等. 八角、肉桂和香茅加工剩余物发酵配制饲料添加剂对肉鸡和蛋鸡的影响 [J]. 现代农业科技, 2019(6):190−191.YANG L, GU Y, ZENG Y M, et al. Effects of feed additives on chickens and layers prepared by fermentation of processing residues of star anise, cinnamon and Citronella [J]. Modern Agricultural Science and Technology, 2019(6): 190−191.(in Chinese) [5] 周苗苗, 崔景香. 水分含量和发酵时间对花椰菜茎叶青贮效果的影响 [J]. 饲料研究, 2015(18):70−73.ZHOU M M, CUI J X. Moisturecontentand fermentation time on effects of stem and leaf silage of Cauliflower [J]. Feed Research, 2015(18): 70−73.(in Chinese) [6] 刘佳杰, 马兰, 周韦, 等. 不同切碎方式及不同青贮时间对饲用苎麻青贮品质影响 [J]. 江西农业大学学报, 2019, 41(4):773−780.LIU J J, MA L, ZHOU W, et al. The effects of different cutting methods and different silage time on the quality of silage for feeding ramie [J]. Acta Agriculturae Universitatis Jiangxiensis, 2019, 41(4): 773−780.(in Chinese) [7] 张养东, 杨军香, 王宗伟, 等. 青贮饲料理化品质评定研究进展 [J]. 中国畜牧杂志, 2016, 52(12):37−42. doi: 10.3969/j.issn.0258-7033.2016.12.007ZHANG Y D, YANG J X, WANG Z W, et al. Progress assessment of chemical indicators of silage [J]. Chinese Journal of Animal Science, 2016, 52(12): 37−42.(in Chinese) doi: 10.3969/j.issn.0258-7033.2016.12.007 [8] 陈鑫珠, 庄益芬, 张建国, 等. 生物添加剂对水葫芦与甜玉米秸秆混合青贮品质的影响 [J]. 草业学报, 2011, 20(6):195−202. doi: 10.11686/cyxb20110625CHEN X Z, ZHUANG Y F, ZHANG J G, et al. Effects of biological additives on the quality of water hyacinth and maize straw mixed silage [J]. Acta Prataculturae Sinica, 2011, 20(6): 195−202.(in Chinese) doi: 10.11686/cyxb20110625 [9] 刘振宇, 玉柱, 刘忠宽, 等. 无机盐添加剂对窖贮紫花苜蓿品质的影响 [J]. 草业科学, 2010, 27(10):154−159. doi: 10.3969/j.issn.1001-0629.2010.10.027LIU Z Y, YU Z, LIU Z K, et al. Effect of Siloguard additives on the quality of Medicago sativa silages in silage Silo [J]. Pratacultural Science, 2010, 27(10): 154−159.(in Chinese) doi: 10.3969/j.issn.1001-0629.2010.10.027 [10] 陈西风. 综述牛羊青贮饲料的加工利用 [J]. 中国动物保健, 2020, 22(7):63−64. doi: 10.3969/j.issn.1008-4754.2020.07.054CHEN X F. Review on the processing and utilization of cattle and sheep silage [J]. China Animal Health, 2020, 22(7): 63−64.(in Chinese) doi: 10.3969/j.issn.1008-4754.2020.07.054 [11] 蔡敦江, 周兴民, 朱廉, 等. 苜蓿添加剂青贮、半干青贮和与麦秸混贮的研究 [J]. 草地学报, 1997, 5(2):123−127. doi: 10.11733/j.issn.1007-0435.1997.02.009CAI D J, ZHOU X M, ZHU L, et al. Study on using additives silage and wilted silage and mixed silage of alfafa [J]. Acta Agrestia Sinica, 1997, 5(2): 123−127.(in Chinese) doi: 10.11733/j.issn.1007-0435.1997.02.009 [12] 冯骁骋, 格根图, 李长春, 等. 青贮条件对天然牧草青贮饲料饲用品质的影响 [J]. 西北农林科技大学学报(自然科学版), 2013, 41(5):9−13.FENG X C, GE G T, LI C C, et al. Influence of silage condition on the natural grass silage feeding quality [J]. Journal of Northwest A & F University (Natural Science Edition), 2013, 41(5): 9−13.(in Chinese) [13] 陈荣, 刘利林, 刘雪彦, 等. 菊芋青贮饲料的制作与品质分析鉴定 [J]. 饲料研究, 2020, 43(5):76−78.CHEN R, LIU L L, LIU X Y, et al. Production and quality analysis and identification of Jerusalem artichoke silage [J]. Feed Research, 2020, 43(5): 76−78.(in Chinese) [14] 高海娟, 刘泽东, 孙蕊, 等. 不同贮藏时间对苜蓿青贮品质的影响 [J]. 中国饲料, 2019(23):95−98.GAO H J, LIU Z D, SUN R, et al. The effects of different storage time on alfalfa silage quality [J]. China Feed, 2019(23): 95−98.(in Chinese) [15] 李茂, 字学娟, 吕仁龙, 等. 添加乳酸菌和纤维素酶对王草青贮品质和瘤胃降解率的影响 [J]. 中国畜牧杂志, 2020, 56(7):161−165.LI M, ZI X J, LYU R L, et al. Effects of adding lactobacillus Plantarum and Cellulase on silage qualityof King grass and rumen degradation rate [J]. Chinese Journal of Animal Science, 2020, 56(7): 161−165.(in Chinese) [16] 姚焰础, 刘作华, 杨飞云, 等. 柑橘皮渣的营养组成及其在畜禽饲料中的应用研究进展 [J]. 养猪, 2013(1):17−21. doi: 10.3969/j.issn.1002-1957.2013.01.006YAO Y C, LIU Z H, YANG F Y, et al. Nutrition composition of citrus peel residue and its application in animal feed [J]. Swine Production, 2013(1): 17−21.(in Chinese) doi: 10.3969/j.issn.1002-1957.2013.01.006 [17] 丁倩, 殷钟意, 郑旭煦, 等. 柑橘皮渣青贮试验及其在小尾寒羊饲喂中的应用研究 [J]. 云南农业大学学报(自然科学), 2020, 35(2):262−268.DING Q, YIN Z Y, ZHENG X X, et al. Silage experiment of Citrus peel residue and its application in feeding small-tailed Han sheep [J]. Journal of Yunnan Agricultural University (Natural Science), 2020, 35(2): 262−268.(in Chinese) [18] 闫峻, 王文杰, 高玉鹏, 等. 玉米秸秆青贮饲料贮存期的营养品质变化规律 [J]. 西北农业学报, 2009, 18(4):57−60. doi: 10.7606/j.issn.1004-1389.2009.04.013YAN J, WANG W J, GAO Y P, et al. Variation law of corn straw silage nutritional quality in different storage periods [J]. Acta Agriculturae Boreali-Occidentalis Sinica, 2009, 18(4): 57−60.(in Chinese) doi: 10.7606/j.issn.1004-1389.2009.04.013 [19] 刘东华. 青贮饲料的调制及其营养变化 [J]. 黑龙江畜牧兽医, 2013(4):111.LIU D H. Silagepreparation and itsnutritionchanges [J]. Heilongjiang Animal Science and Veterinary Medicine, 2013(4): 111.(in Chinese) [20] 李春霞. 饲料中钙、磷含量对动物机体的影响 [J]. 养殖技术顾问, 2014(4):55−55.LI C X. Effect of feed Ca and Pcontents on animal body [J]. Technical Advisor for Animal Husbandry, 2014(4): 55−55.(in Chinese) [21] 艾丹, 郭春华, 徐亚欧, 等. 四川阿坝县秋季牧草钙磷等矿物元素特征及其与土壤钙磷含量的关系 [J]. 草地学报, 2011, 19(6):1060−1063. doi: 10.11733/j.issn.1007-0435.2011.06.029AI D, GUO C H, XU Y O, et al. Mineral element characteristics of autumn forage in aba County and the relationships with ca, P contents of soil [J]. Acta Agrestia Sinica, 2011, 19(6): 1060−1063.(in Chinese) doi: 10.11733/j.issn.1007-0435.2011.06.029