Abstract Detail



Phytochemical

OJO, Funmilola Mabel  [1].

Proximate and Mineral Compositions of Four Accessions of Andropogon gayanus-Andropogon tectorum in Southwestern Nigeria .

Field trips for plant collection covered agro-ecological zones of the following states in Nigeria: Ekiti, Ogun, Ondo, Osun and Oyo. Four accessions of Andropogon gayanus-Andropogon tectorum collected from Southwest Nigeria were evaluated for their nutritional and anti-nutritional composition using standard methods. These species were evaluated to determine the forage properties and the potentials of the two species as fodder. The parts of the plants used were leaves and stems from each of the species studied which were analyzed for proximate composition and mineral contents. The proximate analysis revealed that the moisture contents were moderate in all plant parts used (45.56%-71.46%). The highest moisture contents were recorded in the stem of A. gayanus. The percentage fat content and nitrogen contents were low in all the accessions studied (0.20-0.38%) and (0.60-0.90%) respectively. The lowest value of crude fibre content was recorded in the leaves and stems of A. gayanus. The lowest value of dry matter content was recorded in the stem of A. gayanus. The lowest value of ash content was recorded in the stem of A. gayanus. The lowest and the highest values of Lignin contents were recorded in the leaves and stems of A. gayanus. A. gayanus was the lowest in the source of protein (3.75-3.78%). The carbohydrate contents ranged between 19.92 and 42.02%. The lowest and the highest values were recorded in the leaves and stems of A. gayanus. The levels of calcium, magnesium, potassium, sodium, manganese, iron, copper and zinc are within the recommended range in all the accessions of A. gayanus and A. tectorum studied but phosphorus was below the recommended range.These results indicated that the grass species are a good source of proteins and carbohydrates. They are high enough to meet the requirements of animals, most especially cattle. Based on the mineral requirements of beef cattle, dairy cattle and sheep, this study shows that A. gayanus and A. tectorum are good source of calcium, magnesium, potassium, sodium, manganese, iron, copper and zinc. The concentrations of these mineral nutrients are within the recommended range for animal feeds. The potentials of the complex as fodder was good. 


1 - Department Of Biological Sciences, Olusegun Agagu University Of Sci. And Technology Okitipupa , P.M.B. 353, Km 6, Okitipupa-Igbokoda Road, Okitipupa, Ondo, ON, 234, Nigeria

Keywords:
mineral compositions
Proximate 
Andropogon gayanus
Andropogon tectorum .

Presentation Type: Oral Paper
Number:
Abstract ID:53
Candidate for Awards:None


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