摘要
本试验旨在应用康奈尔净碳水化合物-蛋白质体系(CNCPS)法和瘤胃体外发酵法比较不同加工方式对去油芳樟枝叶营养价值的影响。采用单因素试验设计,共设4个组,分别为天然干燥组(对照组)、人工干燥组、颗粒饲料组和青贮发酵组,每组4个重复,分析不同加工方式对去油芳樟枝叶营养成分、CNCPS中碳水化合物(CHO)组分和瘤胃体外发酵参数的影响。结果表明:1)颗粒饲料组的粗蛋白质(CP)和酸性洗涤不溶蛋白(NDIP)含量显著高于其余各组(P<0.05),中性洗涤纤维(NDF)、酸性洗涤纤维(ADF)和酸性洗涤木质素(ADL)含量显著低于其余各组(P<0.05)。青贮发酵组的粗灰分(Ash)含量显著高于天然干燥组和颗粒饲料组(P<0.05),可溶性碳水化合物(WSC)含量显著高于其余各组(P<0.05)。天然干燥组的淀粉含量显著低于其余各组(P<0.05)。2)颗粒饲料组的快速降解碳水化合物(CA)、中速降解碳水化合物(CB1)和非结构性碳水化合物(NSC)含量显著高于其余各组(P<0.05),CHO和不可降解碳水化合物(CC)含量显著低于其余各组(P<0.05)。人工干燥组的慢速降解碳水化合物(CB2)含量显著高于天然干燥组和青贮发酵组(P<0.05)。3)天然干燥组的体外干物质消化率(IVDMD)以及氨态氮(NH_(3)-N)、总挥发性脂肪酸(TVFA)浓度显著低于其余各组(P<0.05),微生物蛋白(MCP)浓度显著低于人工干燥组和青贮发酵组(P<0.05),乙酸/丙酸(A/P)值显著高于其余各组(P<0.05)。颗粒饲料组的IVDMD显著高于其余各组(P<0.05),NH_(3)-N和TVFA浓度显著高于天然干燥组和青贮发酵组(P<0.05)。综上所述,综合常规营养成分、CNCPS中CHO组分以及体外发酵参数的研究结果可知,人工干燥、制粒以及青贮处理均能提高去油芳樟枝叶的营养价值,且制粒处理效果最优。
The purpose of this experiment was to compare the effects of different processing methods on the nutritional value of degreasing camphor branches and leaves using Cornell net carbohydrate-protein system(CNCPS)method and rumen in vitro fermentation method.The single factor design was used in the experiment,and four groups were set up,namely natural drying group(control group),artificial drying group,pellet feed group and silage fermentation group,each group contained four replicates.The effects of different processing methods on the nutritional components,the carbohydrate(CHO)components in CNCPS and the rumen in vitro fermentation parameters of degreasing camphor branches and leaves were analyzed.The results showed that:1)the crude protein(CP)and acid washing insoluble protein(NDIP)contents of the pellet feed group were significantly higher than those of other groups(P<0.05),and the neutral detergent fiber(NDF),acid detergent fiber(ADF)and acid detergent lignin(ADL)contents were significantly lower than those of other groups(P<0.05).The crude ash(Ash)content of silage fermentation group was significantly higher than that of natural drying group and pellet feed group(P<0.05),and the water-soluble carbohydrate(WSC)content was significantly higher than that of other groups(P<0.05).The starch content of natural drying group was significantly lower than that of other groups(P<0.05).2)The rapidly degraded carbohydrate(CA),moderately degraded carbohydrate(CB1)and non-structural carbohydrate(NSC)contents of pellet feed group were significantly higher than those of other groups(P<0.05),and the CHO and non-degraded carbohydrate(CC)contents were significantly lower than those of other groups(P < 0.05).The slowly degraded carbohydrate(CB2)content of artificial drying group was significantly higher than that of natural drying group and silage fermentation group(P < 0.05).3)The in vitro dry matter digestibility(IVDMD)and ammonia nitrogen(NH_(3)-N),total volatile fatty acid(TVFA)concentrations of natural drying group were significantly lower than those of other groups(P<0.05),the microbial protein(MCP)concentration was significantly lower than that of artificial drying group and silage fermentation group(P<0.05),and the acetic acid/propionic acid(A/P)value was significantly higher than that of other groups(P<0.05).The IVDMD of pellet feed group was significantly higher than that of other groups(P<0.05),and the NH_(3)-N and TVFA concentrations were significantly higher than that of artificial drying group and silage fermentation group(P<0.05).To sum up,comprehensive the results of conventional nutritional components,CHO components in CNCPS and in vitro fermentation parameters,the artificial drying,granulation and silage treatments can improve the nutritional value of degreasing camphor branches and leaves,and the granulation treatment effect is the best.[Chinese Journal of Animal Nutrition,2022,34(11):7282-7290]
作者
王隆
杨磊
许兰娇
杨宇玲
李火平
刘垒
瞿明仁
梁欢
WANG Long;YANG Lei;XU Lanjiao;YANG Yuling;LI Huoping;LIU Lei;QU Mingren;LIANG Huan(Jiangxi Province Engineering Research Center of Feed Development,Jiangxi Province Key Laboratory of Animal Nutrition,Jiangxi Agricultural University,Nanchang 330045,China;Animal Nutrition and Feed Safety Innovation Team,Jiangxi Agricultural University,Nanchang 330045,China;Woody Spice(East China)Engineering Technology Research Center of National Forestry and Grass Administration,Forestry College of Jiangxi Agricultural University,Nanchang 330045,China;Agriculture,Rural and Grain Bureau of Yushui District,Xinyu City,Xinyu 338000,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2022年第11期7282-7290,共9页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
江西省林业局樟树研究专项课题(2020CXZX07⁃0405)
财政部和农业农村部———国家现代农业产业技术体系资助(CARS⁃37)
江西省自然科学基金(20202BAB215009)。
