PROXIMATE AND MINERAL COMPOSITIONS OF RAW AND TOASTED CALABASH SEED CAKE (Leginerea vulgaries) FOR AQUACULTURE FEED

Paper ID : 1081-ICIAQUA

Authors

Abubakar Sadiq Abdulrahim * Mr

Abstract

This research focused on evaluating the proximate and mineral compositions of calabash seeds (Leginerea vulgaris) subjected to raw and toasted treatments in order to assess their economic potential in fisheries and aquaculture. Crude protein determination was done using the Kjeldahl method, moisture content assessed by placing a gram of the sample in a pre-weighed crucible and drying it at 105°C for 24 hours, crude fibre digestion achieved with 150 ml of hot 1.25% H2SO4 for 30 minutes followed by calculating extracted fibre percentages, Soxhlet extraction method was done for crude lipid determination, Ash content was determined by incineration at 600°C and subsequent calculation of crucible and sample weight after cooling in an airtight homogenized vessel, Nitrogen free extract (NFE) content calculated by difference from other analysed elements, and mineral element analysis conducted by measuring absorbance on an atomic absorption spectrophotometer at specific wavelengths. The results presented a range of values for various components: crude protein (20.87 ± 3.31 to 20.43 ± 2.70), crude lipid (2.5 ± 0.23 to 12.25 ± 5.50), crude fiber (3.1 ± 0.23 to 3.75 ± 0.32), total carbohydrate (50.28 ± 9.75 to 37.57 ± 5.19), moisture content (4.00 ± 0.29 to 2.50 ± 0.87), and ash content (19.25 ± 6.21 to 23.50 ± 6.35). Proximate analysis revealed nitrogen content ranging from 3.34 ± 0.53 to 3.75 ± 0.32 for raw and toasted treatments, respectively. The appreciable quantities of essential dietary elements which is rich in K (2900mg to 2452mg ) and Na (1200mg to 1154mg ) from raw to toasted respectively. Ca, Mg, Cu, Zn, Fe and Mn were 3.11mg to 3.78mg , 567mg to 370mg, 14mg to 40.75mg, 0.15mg to 0.20mg, 57.4mg to 57.6mg and 26.4mg to 26.0mg all ranging from raw to toasted respectively. The results suggested that calabash seeds could serve as partial substitutes for conventional feed ingredients such as soybean meal, sunflower meal, groundnut meal (GNC) and other oilseed meals.

Keywords

Calabash seed, Nutritional composition, Oil extraction, Aquaculture feed

Status: Abstract Accepted (Poster Presentation)