Characteristics of Forage Nutritional Quality and Digestibility in Different Types of Grassland in Qinghai Tibet Plateau and their Correlation

doi:10.11733/j.issn.1007-0435.2021.Z1.013

Acta Agrestia Sinica ›› 2021, Vol. 29 ›› Issue (S1): 113-120.DOI: 10.11733/j.issn.1007-0435.2021.Z1.013

Characteristics of Forage Nutritional Quality and Digestibility in Different Types of Grassland in Qinghai Tibet Plateau and their Correlation

YAO Xi-xi¹, WANG Li-ya², YAN Zhen-ying², LI Quan-lin², WANG You-bin², MA Bing-yun², LEI Yan-min², ZHOU Rui³, XIE Jiu-xiang¹

1. College of Agriculture and Animal Husbandry, Qinghai University, Xining, Qinghai Province 810016, China;
2. Natural Resources Comprehensive Investigation and Monitoring Institute of Qinghai Province, Xining, Qinghai Province 810016, China;
3. Academy of animal husbandry and Veterinary Sciences, Qinghai University, Xining, Qinghai Province 810016, China

Received:2021-03-10 Revised:2021-04-22 Online:2021-10-30 Published:2021-11-17

青藏高原典型草地牧草营养品质和消化率特征及其相关性

姚喜喜¹, 王立亚², 严振英², 李泉林², 王有彬², 马秉云², 雷延民², 周睿³, 谢久祥¹

1. 青海大学农牧学院, 青海西宁 810016;
2. 青海省自然资源综合调查监测院, 青海西宁 810001;
3. 青海大学畜牧兽医科学院, 青海西宁 810016

通讯作者: 周睿,E-mail:13893632442@163.com;谢久祥,E-mail:xiejiuxiang8817@163.com
作者简介:姚喜喜(1989-),男,甘肃庆阳人,博士,讲师,主要从事反刍动物营养学与草地生态学研究,E-mail:18993075304@163.com
基金资助:
高原鼢鼠对毒草的偏好及其解毒途径初探（31760622）；青海大学科研启动资金项目（41510406）资助

Abstract

Abstract: In order to explore the differences of forage nutritional quality and digestibility among different types of rangelands, five typical rangeland types (alpine meadow, alpine steppe, warm steppe, desert steppe and warm desert steppe) in Qinghai-Tibet Plateau were used as research objects. The characteristics of forage nutritional quality and digestibility of typical rangelands and their correlation were analyzed. The results showed that:there were significant differences in crude protein (CP), acid detergent fiber (ADF), neutral detergent fiber (NDF) and dry matter digestibility (DMD) among different types of rangeland (P<0.01). The results of Pearson correlation analysis showed that there was a significant positive correlation between DMD and CP (P<0.05), and a significant negative correlation between DMD and NDF and ADF (P<0.05). Elevation (ELE) was positively correlated with DMD and CP (P<0.05), but negatively correlated with NDF and ADF(P<0.05). In conclusion, there were significant differences in CP, ADF, NDF and DMD among different types of grasslands in Qinghai-Tibet Plateau, and it mainly manifested that with the increase of altitude, ADF and NDF gradually decreased, while CP and DMD gradually increased, and forage quality gradually increased.

Key words: Qinghai-Tibet Plateau, Rangeland type, Forage nutritional quality, Dry matter digestibility, Correlation analysis

摘要： 为探究不同类型草地牧草营养品质和消化率的差异，本研究以青藏高原典型的高寒草甸、高寒草原、温性草原、荒漠草原和温性荒漠草原为研究对象，对不同类型草地牧草营养品质和消化率及其相关性进行研究。结果表明：不同类型草地间牧草粗蛋白（Crude protein，CP）、酸性洗涤纤维（Acid detergent fiber，ADF）、中性洗涤纤维（Neutral detergent fiber，NDF）和干物质消化率（Dry matter digestibility，DMD）含量差异显著（P<0.01）。Pearson相关性分析表明，DMD与CP呈显著正相关（P<0.05），而与NDF，ADF之间呈显著负相关（P<0.05）；海拔高度（Elevation，ELE）与DMD，CP显著正相关（P<0.05），而与NDF和ADF显著负相关（P<0.05）。综上所述，青藏高原不同类型草地间牧草CP，ADF，NDF和DMD均存在显著差异，且主要表现为随着海拔的升高，ADF和NDF逐渐降低，而CP和DMD逐渐增高，牧草品质逐渐升高。

关键词: 青藏高原, 草地类型, 营养品质, 干物质消化率, 相关分析

CLC Number:

S431.14

YAO Xi-xi, WANG Li-ya, YAN Zhen-ying, LI Quan-lin, WANG You-bin, MA Bing-yun, LEI Yan-min, ZHOU Rui, XIE Jiu-xiang. Characteristics of Forage Nutritional Quality and Digestibility in Different Types of Grassland in Qinghai Tibet Plateau and their Correlation[J]. Acta Agrestia Sinica, 2021, 29(S1): 113-120.

姚喜喜, 王立亚, 严振英, 李泉林, 王有彬, 马秉云, 雷延民, 周睿, 谢久祥. 青藏高原典型草地牧草营养品质和消化率特征及其相关性[J]. 草地学报, 2021, 29(S1): 113-120.

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Characteristics of Forage Nutritional Quality and Digestibility in Different Types of Grassland in Qinghai Tibet Plateau and their Correlation

青藏高原典型草地牧草营养品质和消化率特征及其相关性

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