Arid
DOI10.5713/ajas.2012.12551
Nutritive Value of Grasses in Semi-arid Rangelands of Ethiopia: Local Experience Based Herbage Preference Evaluation versus Laboratory Analysis
Keba, Habtamu T.1; Madakadze, I. C.1; Angassa, A.2; Hassen, A.3
通讯作者Keba, Habtamu T.
来源期刊ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES
ISSN1011-2367
EISSN1976-5517
出版年2013
卷号26期号:3页码:366-377
英文摘要

We examined the nutritive value of common grass species in the semi-arid rangelands of Borana in southern Ethiopia using local experience based herbage preference (LEBHP) perception and laboratory techniques. Local pastoralists in the study area were asked to identify common grass species and rank them according to the species’ preferences and palatability to cattle. The pastoralists listed a total of 15 common grass species which were then sampled during the main rain and cold dry seasons and analyzed for crude protein (CP), Neutral Detergent Fiber (NDF), Acid Detergent Fiber (ADF) and ash content to verify pastoralists’ claim regarding the quality of individual species. The relative feed value (RFV) and dry matter digestibility (DMD) were also calculated using NDF and ADF contents. Spearman’s rank correlation was used to examine possible relationships between laboratory results and pastoralists’ experience on grass quality. Cenchrus ciliaris, Chrysopogon aucheri, Digitaria milanjiana, Eragrostis papposa and Panicum maximum were the top five species based on LEBHP perception. There were indications of inconsistency in terms of LEBHP perception among the different pastoral communities. The chemical composition of all grass species showed significant (p<0.05) variation between sites, seasons and species. The results showed that the CP values for the Borana rangelands were in the range of 8.7% in the main rain season to 5.1% for the cold dry season. The fiber constituents were relatively low in the main rain season compared to the cold dry season. Overall, Digitaria milanjiana had the highest CP (16.5%) content, while the least was recorded with Heteropogon contortus (10.8) and Aristida adoensis (9.8%) during the main rain season. It seems that the spatial variability of landscapes within the wider geographical regions, soil properties and texture, and land-use patterns probably contributed to site differences in species quality. Generally, the REV of individual grass species was significantly (p<0.05) varied between and within sites. The ranking of species by pastoralists according to their preferences by cattle was highly correlated with the chemical composition of laboratory results of individual grass species with ’r’ values for CP (0.94), ash (0.95), NDF (-0.98), ADF (-0.93) and ADL (-0.93). We suggest the complimentary use of LEBHP and laboratory techniques in evaluating the nutritive quality of rangeland forage species for sustainable animal production.


英文关键词Forage Preference Ranking Grass Nutritive Value Relative Feed Value Semi-arid Rangelands Spatial Variation in Feed Quality
类型Article
语种英语
国家South Africa ; Ethiopia
收录类别SCI-E
WOS记录号WOS:000319093600009
WOS关键词DYNAMICS ; SOIL ; KNOWLEDGE ; NUTRIENT ; PLANTS ; RANCH ; FIBER ; LAND
WOS类目Agriculture, Dairy & Animal Science
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/175942
作者单位1.Univ Pretoria, Dept Plant Prod & Soil Sci, Fac Nat & Agr Sci, ZA-0028 Pretoria, South Africa;
2.Hawassa Univ, Sch Anim & Range Sci, Awasa, Ethiopia;
3.Univ Pretoria, Deparment Anim Sci & Wilde Life, ZA-0028 Pretoria, South Africa
推荐引用方式
GB/T 7714
Keba, Habtamu T.,Madakadze, I. C.,Angassa, A.,et al. Nutritive Value of Grasses in Semi-arid Rangelands of Ethiopia: Local Experience Based Herbage Preference Evaluation versus Laboratory Analysis[J],2013,26(3):366-377.
APA Keba, Habtamu T.,Madakadze, I. C.,Angassa, A.,&Hassen, A..(2013).Nutritive Value of Grasses in Semi-arid Rangelands of Ethiopia: Local Experience Based Herbage Preference Evaluation versus Laboratory Analysis.ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES,26(3),366-377.
MLA Keba, Habtamu T.,et al."Nutritive Value of Grasses in Semi-arid Rangelands of Ethiopia: Local Experience Based Herbage Preference Evaluation versus Laboratory Analysis".ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 26.3(2013):366-377.
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