<p><strong>Background</strong>. Increasing atmospheric concentrations of methane (CH₄) have led scientists to examine its sources of origin. Mitigation of enteric CH₄production by ruminants has been recognized as an important goal because it reduces greenhouse gas emission and improves feed efficiency. <strong>Objective</strong>. The study evaluated the chemical composition and its relationship with <em>in vitro</em> total gas (GP₂₄) and <em>in vitro</em> methane (CH₄) production parameters of five tropical wild legume seeds [(<em>Luffa cylindrica </em>(LC),<em> Piliostigma thonningii </em>(PT)<em>, Detarium microcarpum </em>(DM)<em>, Daniellia oliveri </em>(DO)<em> </em>and <em>Afzelia africana</em> (AA)]. <strong>Methodology</strong>. Chemical compositions were analysed, while total GP volume was measured and CH₄ estimated after 24 h incubation. <strong>Results. </strong>Total GP₂₄ produced by the seeds steadily increased and was most pronounced (P&lt;0.05) in AA seed meal (64.71 mL/200 mg DM), and the least in LC (37.83 mL/200 mg DM). CH₄ concentration (MC) varied (<em>P</em>&lt;0.05) from 9.90 in<strong> </strong>AA to 23.93 in<strong> </strong>LC. Methane reduction potential (MRP) was higher (<em>P</em>&lt;0.05) for<strong> </strong>AA<em> </em>seed meal and lowest for<strong> </strong>LC.<strong> </strong>There were positive correlations (<em>r </em>= 0.685**, <em>r </em>= 0.763* respectively) between crude protein and non-fibre carbohydrates (NFC) contents of the seeds and total gas production at 24 h incubation. Fibre fractions (NDF and ADF) were positively, (<em>r</em> = 0<strong>.</strong>978 and <em>r</em> = 0.874 respectively) correlated with MC, and negatively (<em>r</em> = - 0.927 and <em>r</em> = - 0.870, respectively) associated with total GP₂₄ and MRP<strong>. </strong>CP, EE<strong> </strong>and NFC had a more pronounced positive correlation (<em>r</em> = 0.948**, <em>r</em> = 0.851** and<em> r</em> = 0.852** respectively) with MRP. <strong>Implication</strong>. Results suggest that all the selected seeds have the potential to reduce methane production and positively impact rumen fermentation. <strong>Conclusion</strong>. Seed containing more nutrients (CP, EE, and NFC)<strong> </strong>reduced enteric methane production more than any other of the chemical components in the study.</p>

<p><strong>Background</strong>. The demand and cost of feed ingredients for broiler chicken production have increased in many African countries. This has necessitated the search for alternative feed sources. <strong>Objective. </strong>An experiment was conducted to evaluate the effect of graded levels of <em>Entada africana</em> seed meal (EASM) on growth performance, carcass characteristics and organ weight of broiler chickens. <strong>Methodology. </strong>A total of 150 day-old broiler chicks were randomly allocated to five experimental diets formulated to contain 0, 5, 10, 15 and 20% EASM and designated as T1, T2, T3, T4 and T5 respectively. There were 30 birds in each treatment which was replicated three (3) times with ten (10) birds per pen in a completely randomized design. Throughout the experimental period, feed and water were provided <em>ad libitum </em>for all treatment groups. <strong>Result. </strong>Average body weight gain (40.01-44.36 g/d), average feed intake (90.47-94.33 g/d) and FCR (2.09-2.33) were not influenced by dietary treatments at both starter and finisher phases of the study (P&gt;0.05). The carcass parameters and organ weight measured across the treatment groups were similar (P&gt;0.05) except back (14.85-17.80 %) and breast (16.45-19.87 %) weights (P&lt;0.05). <strong>Implication. </strong><em>Entada africana </em>seed is a rich source of protein that will serve as alternative feed resource in broiler feeds. <strong>Conclusion. </strong>Therefore, up to 20 % processed EASM could be included in the diets of broiler chickens without adverse effect on growth performance, carcass characteristics and organ weight of the birds.</p>