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Ruminant Nutrition and Forage Utilization
Asian-Australasian Journal of Animal Sciences 1996;9(2): 203-210.
DOI: https://doi.org/10.5713/ajas.1996.203    Published online April 1, 1996.
Monthly nutrient variation of paragrass (Brachiaria mutica) and stargrass (Cynodon plectostachyum) collected from pastures grazed by goats
A. B. Serra, S. D. Serra, M. Fujihara, E. A. Orden, L. C. Cruz, T. Ichinohe, T. Fujihara
Abstract
A 13-month study was conducted to determine the monthly variation of crude protein(CP), cell contents(CC), fiber fractions and mineral concentrations of paragrass [Brachiaria mutica (Forsk.) Stapf.] and stargrass (Cynodon plectostachyum Pilger) and to estimate the correlations among the nutrient fractions and climatic factors. The forage samples collected by hand plucking were found to contain CP and mineral concentrations. i.e. calcium(Ca), magnesium(Mg), potassium(K) and zinc(Zn) above the critical levels based on ruminant veeds. Monthly differences(p<0.05) were observed in all CP, CC, neutral detergent fiber(NDF), acid detergent fiber(ADF), hemicellulose(HE), cellulose(CE) and acid detergent lignin(ADL) between the two grass species. Monthly differences(p<0.05) were also observed in all concentrations of forage Ca, K, phosphorus(P), copper(Cu) and Zn except in Mg of both grasses and K of stargrass. Species differences(p<0.05) were observed in all nutrient fractions except Mg and K concentrations. Rainfall had positive correlations to CP, P(p<0.01) and CC(p<0.05); it had negative correlations to NDF(p<0.05). ADF, CE, Ca, Cu and Zn(p<0.01). Temperature, humidity and daylength had also some correlations to various nutrient fractions
Keywords: Paragrass; Stargrass; Nutrient Variation; Nutrient Characteristics; Mineral Content
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