This study is a comparative evaluation of the nutrient profile of four selected browse plants often recommended for use as non-conventional feeding materials. Fresh leaves of Myrianthus arboreus, Gmelina arborea, Terminalia catappa and Dacroydes edulis were collected from farmlands in Asaba, Delta State, Nigeria. Proximate analysis was carried out on the dried leaves to determine the levels of crude protein, crude fiber, metabolisable energy, total ash and ether extract. The presence of the following mineral elements: calcium, magnesium, iron and zinc was determined. The presence of eight amino acids was also determined. Data collected were subjected to a one-way analysis of variance procedure. Significantly different means were separated using Duncan's multiple range procedure. Significance was reported at 5% level of probability. Significant differences between the test materials were observed for all the parameters measured. Results obtained were within the ranges of reported values.
The Sara-Fier Younger Granite Complex is one of the several anorogenic granite suite in central Nigeria which intruded the Basement Complex. The complex is found to comprise of felsic rocks like; biotite-granites, biotite micro granites, hornblende biotite granites, syenites, pyroxene-fayalite granite and hornblende-fayalite granite. The complex is also found to be associated with mafic rocks like gabbroic diorites and diorites which, at some portions have formed hybrid rocks. Rebeckite granites is the porphyritic rock that is found in the ring complex which we could not analyze due to alteration. The rock chemistry of thirty six (36) representative samples was carried out on the energy dispersive x-ray fluorescence (EDXRF) for twelve (12) major and thirty seven (37) trace and REE elements. Agpaitic index and alumina saturation index suggest that almost all the samples are peraluminous to metaluminous. The widely used SiO 2 vs K 2 O classify most of the granite samples as high K rocks while the mafic gabbroic diorites and diorites as calc-alkaline. Use of the popular Pearce et al discrimination diagrams for tectonic interpretation suggest that the rocks are within plate granitoids and A-type granites in the Y vsNb diagram. The enrichment of high field strength (HFS) elements in the investigated granites confirms their Atype identity and exclude them from other granitic types. Spidergraph show negative Sr anomaly suggesting the feldspar fractionated nature of the granitoids where plagioclase played an important role in the evolution of the A-type magmatism. The magma that gave rise to the granitoids most likely came from the lithospheric mantle. The enrichment of Zr and Nb in the rocks indicate Zn-Sn mineralization. The Kwapa valley part of the northern section of the complex contains Pb>15 which confirms that the compex is a tin-bearing granitoid suite.
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