青藏高寒地区混播牧草蛋白质营养价值评价  

Evaluation of Protein Nutritional Value of Mixed Forage Grass in Alpine Region of Qinghai-Xizang

作　　者：靳倩伶 拜彬强[1] 张群英[1] 杨英魁 张生萍[1] 王雷 杜雪燕 赵国君 周学丽 刘书杰[1] 郝力壮[1] JIN Qianling;BAI Binqiang;ZHANG Qunying;YANG Yingkui;ZHANG Shengping;WANG Lei;DU Xueyan;ZHAO Guojun;ZHOU Xueli;LIU Shujie;HAO Lizhuang(Key Laboratory of Plateau Grazing Animal Nutrition and Feed Science of Qinghai Province,Qinghai University,Qinghai Xining 810016,China;Qinghai Province Forage Technology Extension Station,Qinghai Xining 810000,China;Haibei Prefecture Agricultural and Animal Husbandry Product Quality and Safety Inspection and Testing Center,Qinghai Haibei 812200,China;Qinghai Grassland Station,Qinghai Xining 810008,China)

机构地区：[1]青海大学,青海省高原放牧家畜动物营养与饲料科学重点实验室,青海西宁810016 [2]青海省饲草料技术推广站,青海西宁810000 [3]海北州农牧产品质量安全检验检测中心,青海海北812200 [4]青海省草原总站,青海西宁810008

出　　处：《饲料工业》2025年第8期35-41,共7页Feed Industry

基　　金：国家重点研发子课题[2022YFD1302103、2024YFD13003053];青海省高原放牧家畜动物营养与饲料科学重点实验室[重点实验室评估奖励项目:1-8];青海省“昆仑英才·乡村振兴人才”农业农村科技攻关人才项目;青海省“昆仑英才·高端创新创业人才”领军人才项目。

摘　　要：试验旨在系统地评价青海高寒地区混播牧草的蛋白质营养,筛选出适宜反刍动物补充蛋白质的混播牧草,以期为高效利用栽培牧草提供理论支撑。试验以2005-00蚕豆+燕麦、青海13号蚕豆+燕麦、华油杂62油菜+燕麦、饲油2号油菜+燕麦为试验材料,通过常规成分、康奈尔净碳水化合物与蛋白质体系(CNCPS)蛋白组分和体外培养指标的测定,比较4种混播的蛋白质营养品质。试验结果表明:豆科与禾本科的混播效果明显优于十字花科与禾本科的混播;2005-00蚕豆+燕麦的粗蛋白(CP)含量(10.31%)、不溶于缓冲液的蛋白质(SICP)含量(8.23%)、真蛋白(TCP)含量(8.59%)和可利用真蛋白(ATCP)含量(7.42%)均为最高,不可降解蛋白(C)的含量(1.17%)最低;饲油2号油菜+燕麦的可溶性粗蛋白(SCP)含量(3.86%)和快速降解蛋白(B_1)含量(2.45%)均显著高于其余混播牧草(P<0.05);华油杂62油菜+燕麦的可利用粗蛋白(uCP)含量(10.52%)最高,且4种混播的差异不显著(P>0.05);2005-00蚕豆+燕麦的异戊酸含量(0.43 mmol/L)、乙丙比(2.12)均为最高,但其丁酸含量(4.28 mmol/L)、戊酸含量最低(0.98 mmol/L)。综上所述,2005-00蚕豆+燕麦的蛋白质营养含量较高,能较好供给反刍动物蛋白质营养。The purpose of this experiment is to systematically evaluate the protein nutrition of mixed forage in alpine regions and select the mixed forage suit⁃able for protein supplementation,in order to pro⁃vide support for efficient utilization of cultivated forage.In this experiment,2005-00 broad bean+oat,Qinghai 13 broad bean+oat,China oil 62 rape⁃seed+oat,feeding oil 2 rapeseed+oat compared the nutritional quality of the conventional composi⁃tion,cornell net carbohydrate and protein system(CNCPS)and in vitro culture index.The results showed that the mixing effect of legume and poa⁃ceae is obviously better than that of cruciferous and poaceae;2005-00 crude protein content(CP)(10.31%),buffer insoluble protein(SICP,8.23%),true protein(TCP,8.59%)and available true protein(ATCP,7.42%)are the highest,the lowest content of nondegradable protein(C,1.17%);the content of soluble crude protein(SCP,3.86%)and rapidly degraded pro⁃tein(B1)content(2.45%)of no.2 rapeseed+oat were significantly higher than that of the other mixed grasses(P<0.05);the highest available crude protein(uCP)content(10.52%),And the difference between the 4 kinds of mixed broadcast is not significant(P>0.05);2005-00 broad bean+oat isoperic acid content(0.43 mmol/L),ethylene-propylene ratio(2.12)are the highest.However,the butyric acid content(4.28 mmol/L)and valeric acid content were the lowest(0.98 mmol/L).In conclusion,the 2005-00 broad bean+oat has a high protein nutrition content,which can better provide protein nutrition to ruminant animals.

关 键 词：CNCPS UCP 体外培养 栽培牧草 混播 

分 类 号：S816.5[农业科学—饲料科学]