Browsing by Author "Sotolu, A. O."

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    NUTRIENT UTILIZATION, GROWTH PERFORMANCE AND HEAMATOLOGY OF CLARIAS GARIEPINUS FED DIETARY GARCINIA KOLA FOR QUALITY FISH PRODUCTION
    (Department of Agricultural Economics and Extension,Nasarawa State University, Keffi, 2014-04-13) Sotolu, A. O.; Yakubu, O. S.
    One hundred and fifty African catfish (mean weight, 673.30-813.30g) were divided equally among five groups in triplicate. Each group is a treatment of graded bitter kola (Garcinia kola) inclusion level for ensuring healthy fish production. Five diets (42% crude protein) containing varying levels of powdered whole seed of G. kola at 0.00, 0.25, 0.50, 0.75 and J.OOg/kg were prepared as treatments Tl- T5 respectively. All groups were fed respective treatment-based-diets for forty-two (42) days during which data on body weight and blood parameters were recorded. There were significant differences (P < 0.05) in the growth performance and nutrient utilization efficiency. Fish fed 0.25g/kg G. kola inclusion (T2) had the best weight gain and specific growth rate with relative inferior feed conversion ratio and protein efficiency ratio to T4 and 5 (p>0.05). Values of Pack Cell Volume (PCV), Haemoglobin Concentration (Hb) and Red Blood Cell (RBC) count were highest in T2 but they all decreased with increasing levels of G. kola inclusion. White Blood Cells (WBC) count generally decreased from Tl to T5. The bacterial load of the culture medium decreased accordingly with increasing G. kola inclusion in tanks which may be as a result of the antimicrobial effect of G. kola whole seeds. Inclusion of G. kola whole seeds at 0.25g/kg in catfish diet is recommended to ensure successful fish production.
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    PRELIMINARY SURVEY OF AQUACULTURE POTENTIALS OF MANGROVE OYSTER (CRASSOSTREA GASAR) IN ARID ZONE NIGERIA.
    (Department Of Fishery, Nasarawa State University Keffi., 2016-01-01) Sule, S.; Sotolu, A. O.
    The need for aquaculture intensification and expansion for sustainable production of rich protein means that there is the need to turn to the living resources of the adjacent sea, creek waters and inland water bodies mostly shell fish species. The tide of public opinion needs to be turned to the culture of mollusk which offers great potentials both as a rich protein source and as a source of income. In time past Mangrove Oysters known as lesser fishery resource was either invisible or ignored, but should now be seen as an extractive industry with a proud renewable potential and thus sustainable way of making a living. This survey is aimed at establishing the potential culture of oyster on River Yobe. Water quality parameters of importance were accessed which include water depth, salinity, pH, dissolved oxygen and freedom from pollution. Basic requirements of culture area are the same for fish farming. Facilities for culture are inexpensive and can be easily made using local materials. Most important to establishing an oyster farm is the correct placing of collectors and adequacy of harvesting as they thrive successfully without formulated diets and concludes that salinity has no effect on growth and survival since the study area is a freshwater environment.