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Articles by A.A. Jimoh
Total Records ( 5 ) for A.A. Jimoh
  A.A. Jimoh , E.O. Clarke , O.O. Whenu , M.A. Anetekhai and P.E. Ndimele
  Studies on the morphological characterization of the African river prawn, Macrobrachium vollenhovenii and the brackish water prawn, Macrobrachium macrobrachion from Badagry Creek in Southwest Nigeria were carried out. Samples of M. vollenhovenii (n = 275) and M. macrobrachion (n = 790) were collected from Badagry Creek. Morphometric analysis showed that M. vollenhovenii and M. macrobrachion exhibited positive allometric growth with “b” values of 3.11 and 2.58, respectively. M. vollenhovenii (6.29±3.48 g) was larger than M. macrobrachion (4.75±2.43 g). The males of both species were larger than the females. The correlation between Total Length (TL) and Body Weight (BW) was high and positive (M. vollenhovenii, r = 0.95; M. macrobrachion, r = 0.87). A significant (p<0.05) positive correlation occurred between TL and Carapace Length, (CL) (M. vollenhovenii, r = 0.83; M. macrobrachion, r = 0.66) and between TL and rostral length, RL (M. vollenhovenii, r = 0.73; M. macrobrachion, r = 0.79). Dorsally, M. vollenhovenii and M. macrobrachion had 6-14 (mean = 9.84±1.35) and 7-15 (mean = 9.38±0.84) rostral spines, respectively while on the ventral side of the rostrum, M. vollenhovenii had 3-8 spines (mean = 5.15±0.76) and M. macrobrachion had 3-10 spines (mean = 5.34±0.61). Female M. macrobrachion and M. vollenhovenii predominated with sex ratios of 1:3.73 (p<0.05) and 1:1.05 (p>0.05), respectively. There appears to be exploitation pressure on these prawns in Badagry Creek. Therefore, there is need for some management measures to be taken.
  A.A. Jimoh , P.E. Ndimele , I.P. Lemomu and U.A. Shittu
  The food and feeding habit of the gladiator swim crab, Callinectes pallidus was investigated in Ojo Creek, Lagos, Southwestern Nigeria between April and June, 2010. The stomach content analysis was carried out using the frequency of occurrence method, numerical method and further confirmed using the Geometric Index of Importance (GII). Forty two (representing 14%) of the 300 specimens of the crabs examined had empty stomachs. The crabs fed on a variety of food items which included fishes, molluscs, crustaceans, higher plant materials, algae and diatom. Fishes were the most important food item constituting 48.2 by number, 75.6% by occurrence and 87.5% using the GII. This was closely followed by mollusc accounting for 36.5 by number, 71.3% by occurrence with a GII of 76.2%. The least item consumed was diatom with 0.7 by number, 11.6 by occurrence and 8.7% using GII. Fishes still remained the most important feed item relative to size and sex; however there was slight variation in food and feeding habit relative to size. The smaller crabs (carapace width <3.99 cm) fed more on algae and diatom than medium size (4.00, 4.99 cm carapace width) and large crabs (carapace width >5.00 cm). There was also a slight variation in food and feeding habit relative to sex with males consuming more fishes (with 53.3 by number, 82.4 by occurrence and 96% using GII), than females (41.4 by number, 70.9% by occurrence and 79.4 using GII). Using the frequency of occurrence method the females (with 53.4%) consumed higher plant materials than the males (38.2%). This study revealed that Callinectes pallidus is an omnivore and an opportunistic feeder.
  A.A. Jimoh , E.B. Ibitoye , Y.U. Dabai and S. Garba
  This study was conducted to investigate in vivo antimicrobial potential of garlic against Clostridium perferinges and resultant promotant effects on performance of the broiler chickens. Garlic powder was used as an alternative to GPAs (Growth Promotant Antibiotics) to prevent subclinical Necrotic Enteritis (NE) due to C. perferinges. 120 day-old broiler chicks were randomly distributed to six treatment groups of 20 chicks each (2 replicates¯10 chicks). Six isonutrient diets supplemented with garlic at graded levels of 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 g kg-1 were fed to the birds for seven weeks. Data were collected weekly on performance parameters including feed intake, weight gain and feed conversion ratio (FCR). Also, on the 21 35 and 49th days of the study, two birds per group were randomly selected, slaughtered and dissected. 1g of caecal contents per each bird were sampled into labelled sterile sample bottles. The samples were subjected to culturing, bacterial identification and colony counting. All data were subjected to analysis of variance. Results showed that garlic significantly (p>0.05) depressed feed intake (3310 g feed/bird at 1.0 g kg-1 supplementation) but improved FCR. The supplement has no significant effect on weight gain but C. perfringens colony counts in the treated groups, were numerically reduced (lowest count, 0.93x105 cfu g-1 at 1.0 gkg-1 supplementation), as compared to the control. It is therefore concluded that diets could be supplemented with garlic at dose range of 1.0 to 1.5 g kg-1 to prevent subclinical NE and achieve improved performance in birds.
  O.O. Egbewande , A.A. Jimoh , E.B. Ibitoye and B.R. Olorede
  Tapinanthus bangwensis (African Mistletoe), leaf meal was used as a replacement for GNC at 0, 5, 10 and 15% levels of inclusion in broiler diets. One hundred and twenty day-old (Anak strain) broiler chicks were used for the study which lasted for six weeks. Feed intake and body weight gain were determined weekly. The feed/gain and gain/feed ratios were also determined. At the end of the study five birds per treatment were randomly selected, starved and bled for blood samples to be used for haematological and serum chemistry. There was no significant difference (p>0.05) in feed intake, but there was (p<0.05) in body weight gain. Statistical analysis showed significant difference (p<0.05) in haemoglobin, PCV and RBC; but no significant difference (p>0.05) in WBC. The serum parameters showed no significant difference (p>0.05) among treatment means except in globulin. Treatment IV showed the least feed cost/kg feed. No mortality was recorded throughout the feeding trial.
  P.E. Ndimele and A.A. Jimoh
  A passive phytoremediation study was carried out between April, 2007 and March, 2008 at three sampling stations; Ibiye Jetty, Obele and Idoluwo in Ologe Lagoon, Lagos, Nigeria to ascertain the extent of heavy metal pollution and the potential of water hyacinth (Eichhornia crassipes, (Mart.) Solms) as a phytoremediant. The study assessed the levels of some heavy metals (Pb, Fe and Zn) in water and sediment (abiotic monitors) in comparison with their levels in E. crassipes (biomonitor) for phytoremediation. The observed values of the heavy metals in water, sediment and water hyacinth of Ologe Lagoon did not vary significantly (p>0.05) among the sampling stations. However, the concentrations of these metals in sediment were about 3-32 times higher than the values recorded in water. Similarly, bioconcentration factor (BCF) showed that E. crassipes accumulated the heavy metals from water in about 3-28 folds inspite of the low levels of these metals in the water column. This study showed that E. crassipes can accumulate heavy metals even when the concentrations of the metals in the abiotic components (water and sediment) of the aquatic environment is low, suggesting that E. crassipes can be used in phytoremediation of heavy metal polluted aquatic ecosystems.
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