Evaluation of Micro-Minerals and Nutritional Status of Some Forage Grasses in Mastuj Valley, Hindukush Range, Pakistan
DOI:
https://doi.org/10.3923/pjn.2014.622.625Keywords:
Grasses, Mastuj valley, micro-minerals, nutritional valuesAbstract
Four important grasses Bermuda grass Cyanodon dactylon L., Reed grass Phragmites karka (Retz.) Trin ex Steud, Thatch grass Saccharum spontaneum L. and Calamogrostris pseudophragmites Hall. f. Koeler were analyzed for their micro-minerals and nutritional status. Eight micro-minerals including Cd, Co, Cu, Cr, Fe, Mn, Sr, Zn and NDF, ADF, lignin, hemicellulose and cellulose contents were analyzed at three phenological stages. The concentration of majority of elements increased from pre-reproductive to post reproductive stages except Cd, Cu, Mn and Sr. Cd, Cu, Co, Cr, Sr and Zn were lowest while Fe and Mn were highest in the forage grasses. NDF, ADF and lignin contents were highest at post-reproductive stages in Phragmites karka (80.84%) and Saccharum spontaneum (80.34%). Hemicellulose contents were high (42.94%) at pre-reproductive stages in Cynodon dactylon. Calamogrostris pseudophragmites had highest (7.99%) cellulose at pre-reproductive stage. Saccharum spontaneum had the highest amount of organic matter (94.71%), moisture contents (10.89%) and crude fiber (26.26%) at pre-reproductive and reproductive stages. Ash contents were maximum (18.98%) in Phragmites karka at reproductive stage, while crude protein (20.01%), fat (12.83%) and NFE (46.30%) were highest in Cynodon dactylon. The plants must be analyzed to know the natural compounds, proximate composition and nutritional values. At high concentration these may prove high toxicity in consumer species.
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