动物营养学报2025，Vol.37Issue(2)：1388-1400,13.DOI:10.12418/CJAN2025.119
青海省高寒地区5种禾本科牧草产草量和营养价值综合评价
Comprehensive Evaluation of Grass Yield and Nutritional Value of Five Gramineous Forages in Alpine Region of Qinghai Province
摘要
Abstract
The purpose of this experiment was to evaluate the grass yield and nutritional value of five gramine-ous forages in alpine region of Qinghai province,and to provide a theoretical basis for the scientific and effi-cient application of perennial forages in alpine regions.Five common perennial grasses(Puccinellia tenuiflora,Elymus sibiricus L.,Festuca sinensis,Festuca rubra L.,Elymus dahuricus)in alpine region were used as the research objects,and their forage yield,nutrient contents,feeding value,in vitro gas production parameters and in vitro fermentation parameters were comprehensively evaluated.The results showed as follows:1)the fresh grass yield and hay grass yield of Elymus dahuricus were significantly higher than those of other 4 forages(P＜0.05).2)The calcium(Ca)content of Puccinellia tenuiflora was significantly higher than that of other 4 forages(P＜0.05).The phosphorus(P)content Elymus sibiricus L.and Festuca sinensis was significantly lower than that of Elymus dahuricus and Festuca rubra L.(P＜0.05).The dry matter(DM)content of Festu-ca rubra L.,Elymus sibiricus L.and Elymus dahuricus was significantly higher than that of Puccinellia tenui-flora and Festuca sinensis(P＜0.05).The crude protein(CP)content of Elymus sibiricus L.was significantly higher than that of other 4 forages(P＜0.05),and the crude ash(Ash)content was significantly lower than that of other 4 forages(P＜0.05).3)The relative feed value(RFV)and relative forage quality(RFQ)of Elymus dahuricus were significantly lower than those of other 4 forages(P＜0.05).4)The gas production rate and gas production delay time of Elymus dahuricus were significantly higher than those of other 4 forages(P＜0.05).The total volatile fatty acid(TVFA)content of Festuca rubra L.,Elymus sibiricus L.and Elymus dahuricus was significantly higher than that of Puccinellia tenuifllora and Festuca sinensis(P＜0.05).The ace-tic acid,propionic acid,isobutyric acid,butyric acid and isovaleric acid contents of Puccinellia tenuiflora and Festuca sinensis were significantly higher than those of Elymus sibiricus L.,Festuca rubra L.and Elymus dahuricus(P＜0.05).The ammoniacal nitrogen(NH3-N)content of Elymus sibiricus L.was significantly higher than that of other 4 forages(P＜0.05).5)The unit area DM yield of Elymus dahuricus was significant-ly higher than that of other 4 forages(P＜0.05).The unit area CP yield of Elymus sibiricus L.was significantly higher than that of other 4 forages(P＜0.05).In conclusion,the Elymus dahuricus and Elymus sibiricus L.have the higher grass yield and nutritional value,and can be recommended as cultivated forage in Qinghai al-pine region.[Chinese Journal of Animal Nutrition,2025,37(2):1388-1400]关键词
高寒地区/禾本科牧草/产草量/体外产气/营养价值Key words
alpine region/gramineous forage/grass yield/in vitro gas production/nutritional value分类
畜牧业引用本文复制引用
刘爱鑫,张楠楠,刘毅,黄亚宇,周学丽,赵国君,杨英魁,拜彬强,郝力壮..青海省高寒地区5种禾本科牧草产草量和营养价值综合评价[J].动物营养学报,2025,37(2):1388-1400,13.基金项目
青海省自然科学基金杰出青年基金(2024-ZJ-905) （2024-ZJ-905）
国家重点研发子课题(2022YFD1302103) （2022YFD1302103）
青海省高原放牧家畜动物营养与饲料科学重点实验室项目(重点实验室评估奖励项目:1-8) （重点实验室评估奖励项目:1-8）
