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Articles by Modupe O. Daodu
Total Records ( 2 ) for Modupe O. Daodu
  Modupe O. Daodu and O.J. Babayemi
  In Nigeria, pasture is routinely available such that it is abundant in the rainy season and very scare in the dry season. Browse trees are not seasonal and a number of the browse trees are acceptable by cattle, sheep and goats as supplements to the scanty pasture in the off-season. It is against this background that the present study was carried out to assess the nutritive value of some relatively unexploited browse plants including neem (Azadirachta indica), almond (Terminalia catappa), mango (Mangifera indica) and bitter leaf (Vernonia amygdalina). Chemical composition of the forages was determined for CP, NDF, ADF and ADL. Presence of secondary metabolites including tannin, saponin and steroids was determined qualitatively. Residue obtained from qualitatively determined secondary metabolites (extracted) and that of whole samples (unextracted) were further subjected to in vitro gas production at 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22 and 24 h incubation periods to elicit extent of degradability. Results indicate that CP, NDF, ADF and ADL ranged from 10.5-21.8, 34.5-38.5, 21.0-26.3 and 6.5-15.5% respectively. Saponin was present in mango tree while all samples showed presence of condensed tannin and steroids. Extracted residue enhanced degradability as total gas production, metabolizable energy, organic matter digestibility and methane production were more than those of the whole browse samples. It is concluded that browse trees have nutritive value and the presence of secondary metabolites in them are assets for the reduction of methane capable of increasing environmental pollution.
  O.J. Babayemi , M.A. Bamikole and Modupe O. Daodu
  Eight tropical seeds from browse, shrubs and pulses plants were assessed for their nutritive value using in vitro gas production technique. Dry Matter (DM), Crude Protein (CP), crude fibre, ash, ether extract and Neutral Detergent Fibre (NDF) were analyzed. Milled seeds were incubated using 200 mg/30 ml inoculum for 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22 and 24 h. At post incubation, the total gas volume was measured for methane using 4 ml of 10 M NaOH. Dynamics of gas production characteristics over time were described by equation Vt = Vf x [1 + exp {2-4 x S x (t-L)}] - 1. Metabolizable Energy (ME; MJ/kg DM), Organic Matter Digestibility (OMD; %) and short chain fatty acids (SCFA; μmol/200 mg DM)) were estimated. DM was lowest (88.1%) in Leucaena leucocephala and was the best (95.6%) in Tephrosia bracteolata seeds. CP ranged from 25-38.9% being the least (25.0%) for Lablab purpureus and the highest (38.9%) for Tehprosia candida. NDF of the seeds varied from 27.1% in Tephrosia bracteolata to 49.1% in Leucaena leucocephala. The volume of gas produced by the seeds consistently increased (p<0.05) and was significantly (p<0.05) highest in pulse legumes. Potential extent (Vt) of gas production ranged from 36.8-53.6 and that of fractional rate of gas production from 0.043-0.07. The ranged values 7.5-10.4, 50.7-70.4 and 0.751-1.185 for ME, OMD and SCFA respectively were significantly (p<0.05) highest in Tephrosia bracteolata seeds. The CH4 production varied from 148 μml in Albizia lebbeck to 300 μml in Carnavalia ensiformis. The result showed that the seeds were high in nutrients, digestible and metabolizable energy with relatively low methane production and therefore could be used for ruminants as feedstuffs.
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