Zobrazeno 1 - 10
of 13
pro vyhledávání: '"P. C. Ofojekwu"'
Publikováno v:
Journal of Applied Sciences and Environmental Management, Vol 6, Iss 1 (2004)
Acute toxicity tests were conducted in renewable static bioassays to determine the 48h-lc50 of Diazinon on rotifers, cyclops, mosquito larvae and fish. The 48h-lc50 values were 3.93 mg/l, 39.39,9.87 and 189.31μg/l for rotifers, cyclops, mosquito lar
Externí odkaz:
https://doaj.org/article/1782af9ebd85472b8ba2d860bd639d67
Publikováno v:
Asian Journal of Fisheries and Aquatic Research. :1-6
The aim of this study was to search for a cheap source for the mass production of Brachionus calyciflorus Pallas, 1766 which is a good substitute for artemia in the culture of C. gariepinus hatchlings. Poultry manure (1.25 g/L), soya bean (1.25 g/L),
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57ed8de44888f111ca4018836f67a829
https://doi.org/10.9734/ajfar/2019/v3i330035
https://doi.org/10.9734/ajfar/2019/v3i330035
Autor:
P. C. Ofojekwu, Francis O. Arimoro
Publikováno v:
Tropical Freshwater Biology. 12
Comparative analysis of survival and growth in the toothed carp, Aphyosemion gardneri larvae grown on the freshwater rotifer, Brachionus calyciflorus and on commercial diet were obtained. The freshwater rotifers were first isolated and cultured in th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ccf90746813017442f76147879bf0b9
https://doi.org/10.4314/tfb.v12i1.20874
https://doi.org/10.4314/tfb.v12i1.20874
Autor:
P. C. Ofojekwu, Francis O. Arimoro
Publikováno v:
Journal of Aquatic Sciences. 19
The effectiveness of using freshwater Chlorella , mixed algae, lettuce leaves and supplemental baker's yeast for the culture of freshwater rotifer, Brachionus calyciflorus were evaluated every two days for 18 days culture period. Rotifers raised with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3529ff5eb09392803757ea67614f4f58
https://doi.org/10.4314/jas.v19i2.20030
https://doi.org/10.4314/jas.v19i2.20030
Autor:
J. O. Cheikyula, P. C. Ofojekwu
Publikováno v:
Journal of Aquatic Sciences. 18
Five sets of 20-day old goldfish fry, Carassius auratus with average weights of 0.167 ± 0.003 g were reared for eight weeks in plastic bowls for growth and survival studies. One set (labelled MN) was fed Moina and Cyclops. A second set (labelled FM)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::221d786fd364c46cb81fd250a58f3fee
https://doi.org/10.4314/jas.v18i1.19941
https://doi.org/10.4314/jas.v18i1.19941
Publikováno v:
Journal of Aquatic Sciences. 18
Palm kernel meal was used in Nile tilapia,Oreochromis niloticus, diets at levels of 0, 8, 16, 24, 32 and 48% by progressively replacing on an equal nitrogen base solvent-extracted cottonseed cake. The feeds were formulated to contain approximately 32
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a303972b00426fef9deb5cff212d5831
https://doi.org/10.4314/jas.v18i1.19944
https://doi.org/10.4314/jas.v18i1.19944
Autor:
P. C. Ofojekwu, V. O. Ayuba
Publikováno v:
Journal of Aquatic Sciences. 17
Datura innoxia root extract was exposed to fingerlings of Clarias gariepinus (mean weight: 10.20 + 0.38 g) for 96 hours under laboratory conditions using static bioassays with continuous aeration to determine its acute toxicity. The LC50 of the expos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::649f90482bb59013a0d4ccd84e2ce833
https://doi.org/10.4314/jas.v17i2.19927
https://doi.org/10.4314/jas.v17i2.19927
Autor:
P. C. Ofojekwu, A. A. Kigbu
Publikováno v:
Journal of Aquatic Sciences. 17
The effect of substituting fish meal with sesame cake in fish diets on the growth, food utilization and body composition of the Nile tilapia, Oreochromis niloticus (mean weight = 1.06 0.07g) were investigated. The results show that the best growth an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::132756f1562bd5e15ae5c12965cbf8b8
https://doi.org/10.4314/jas.v17i1.19909
https://doi.org/10.4314/jas.v17i1.19909
Publikováno v:
Journal of Applied Sciences and Environmental Management; Vol 6, No 1 (2002); 49-52
A herbicidal control of water hyacinth,WH (Eichhornia crassipes, Martius Solms — Laubach) was carried out by applying glyphosate (N — phosphyonomethyI glycerine) containing 360g/l glyphosate in the form of 480g/l isopropylamine salt at the rate o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14ca6271b951ef48fcc36a3832fea5ac
https://doi.org/10.4314/jasem.v6i1.17195
https://doi.org/10.4314/jasem.v6i1.17195
Publikováno v:
Journal of Applied Sciences and Environmental Management; Vol 6, No 1 (2002); 18-21
Acute toxicity tests were conducted in renewable static bioassays to determine the 48h-lc50 of Diazinon on rotifers, cyclops, mosquito larvae and fish. The 48h-lc50 values were 3.93 mg/l, 39.39,9.87 and 189.31μg/l for rotifers, cyclops, mosquito lar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::712e7fc955e2656c94463d03a22fd9a3
https://doi.org/10.4314/jasem.v6i1.17188
https://doi.org/10.4314/jasem.v6i1.17188