scholarly works

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Clinic and laboratory manual: veterinary public health-preventive medicine-wildlife and fish diseases
(2008) Adeyemi, I. G.; Alonge, D. O.; Agbede, S. A.; Ogundipe, G. A. T.; Ishola, O. O; Babalobi, O. O.; Ijagbone, I. F.; Cadmus, S. I. B.; Adedeji, O. B.; Adeyemo, O. K.; Olugasa, B. O.; Adetunji, V. O.; Olatoye, I. O.; Awosanya, A. E. J.; Ojomo, B.; Agboola, B. B.
Comparative evaluation of productivity and cost effectiveness of catfish fingerling production in earthen pond and recirculation system in Ibadan, Nigeria
(2011) Adeyemo, O. K.; Ganiyu, O. I.; Olugasa, B. O.
Despite the popularity of the African catfish and its great market potentials, the production is still basically at subsistence level due majorly to inadequate supply of seed for stocking. This has been linked to the absence of reliable production techniques for the mass production and rearing of the species under practical farming conditions. The purpose of this study therefore, was to find a suitable culture system for the mass production of catfish (Clarias gariepinus) fingerlings. Protected earthen pond and a unit of recirculation system were used. Fertilized eggs from female were divided into two equal halves and incubated under the same conditions. Forty-nine thousand frys each were stocked into the protected earthen pond and a unit recirculation system respectively. The frys in the two systems were raised for twenty one days and fed the same quantity and quality of feed throughout the period. The survival rate of the frys in the recirculation system was 79% as against 17% in the earthen pond. However, bigger sized (2.2 ± 0.23g) fingerlings were obtained from the earthen pond relative to those cultured in the recirculation system (0.9 ± 0.07g). The cost of raising frys in a recirculation system (N34,000) was twice that needed for earthen pond (N17,000), but this was more than made up for in the profit from sales, which was N311,360 and N99,156 respectively. The main reason for fish farming is the expected return to be, therefore, the choice of income-generating activities, amongst several options available, should be made on the grounds of their expected returns.
Comparative evaluation of productivity and cost effectiveness of catfish fingerling production in earthen pond and recirculation system in Ibadan, Nigeria
(2011) Adeyemo, O. K.; Ganiyu, O. I.; Olugasa, B. O.
Despite the popularity of the African catfish and its great market potentials, the production is still basically at subsistence level due majorly to inadequate supply of seed for stocking. This has been linked to the absence of reliable production techniques for the mass production and rearing of the species under practical farming conditions. The purpose of this study therefore, was to find a suitable culture system for the mass production of catfish (Clarias gariepinus) fingerlings. Protected earthen pond and a unit of recirculation system were used. Fertilized eggs from female were divided into two equal halves and incubated under the same conditions. Forty-nine thousand frys each were stocked into the protected earthen pond and a unit recirculation system respectively. The frys in the two systems were raised for twenty one days and fed the same quantity and quality of feed throughout the period. The survival rate of the frys in the recirculation system was 79% as against 17% in the earthen pond. However, bigger sized (2.2 ± 0.23g) fingerlings were obtained from the earthen pond relative to those cultured in the recirculation system (0.9 ± 0.07g). The cost of raising frys in a recirculation system (N34,000) was twice that needed for earthen pond (N17,000), but this was more than made up for in the profit from sales, which was N311,360 and N99,156 respectively. The main reason for fish farming is the expected return to be, therefore, the choice of income-generating activities, amongst several options available, should be made on the grounds of their expected returns.
Geographical Information System (GIS) Mapping of Spatio-Temporal pollution status of Rivers in Ibadan, Nigeria
(Asian Network for Soioniifio Information, 2008) Adeyemo, O. K.; Babalobi, O. O.
More accurate spatio-temporal predictions of urban environment arc needed as a basis for assessing exposures as a part of environmental studies and to inform urban protection policy and management. In this study, an information system was developed to manage die physico-chemical pollution information of Ibadan river system. Oyo Slate, Southwest Nigeria. The study took into account die seasonal influences of point and non-point discharges on die levels of physico-chemical parameters. The overall sensitivity of the watershed to physicochemical environmental pollution revealed dial during dry season, of the 22 (100%) sample points, only 3(13.6%) were unpolluted, 6 (27.3%) were slightly polluted, 10 (45.4%) were moderately polluted. 2 (91%) were seriously polluted and 1 (4.5%) was exceptionally polluted During rainy season, 3 (13.6%) were unpolluted. 7 (31.8%) were slightly polluted, 9 (40.9%) were moderately polluted, 2 (9.1%) were seriously polluted and 1 (4.5%) was exceptionally polluted There is a considerable environmental risk associated with the present level of pollution of the Ibadan river water body on fish health and biodiversity This research provides a basis for aquatic management and assist in policy making at national and international levels Appropriate strategies for the control of point and non-point pollution sources, amendments and enforcement of legislation should be developed.