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Articles by R. Olajide
Total Records ( 3 ) for R. Olajide
  R. Olajide
  The performance of hydro broiler chickens fed graded levels of soaked wild cocoyam (Colocasia esculenta L. Schott) corms (SWCC) as a partial substitute for maize were investigated in a 28 day study. One hundred and twenty (120) 4 week old hydro broiler chickens of similar average weight were randomly assigned to 4 dietary treatments. Each treatment had 3 replicates of 10 birds each. Four experimental diets were formulated such that SWCC replaced maize at 0.00, 10.00, 20.00 and 30.00% in the diets. The birds were fed ad libitum and clean drinking water was provided throughout the period of the study. Parameters investigated include the growth performance, carcass characteristics, haematological and serum biochemical indices. Result of the growth performance showed no significant (p>0.05) difference in average weekly feed intake. Average weekly weight gain and cost per kilogram feed decreased (p<0.05); FCR increased (p<0.05) with increased inclusion of SWCC in the diets. Cost of feed per kilogram weight gain (CFPKWG) of birds fed on all SWCC-based diets were significantly (p<0.05) lower than control. Result of carcass analysis indicated that live weight, plucked weight, Eviscerated Weight (EW), Dressed Weight (DW), GIT and organs (kidney, liver and gizzard) were significantly (p<0.05) affected by dietary treatments. The highest (p<0.05) EW (72.91%) and DW (64.78%) of the control were similar (p>0.05) to EW (71.51%) and DW (63.33%) of 10% SWCC; but higher (p<0.05) than those of 20 and 30% SWCC. Organ weights reflected their roles in handling residual anti-nutritional factors in SWCC. Variations obtained in all the serum biochemical indices and haematological parameters investigated were not significant (p<0.05). This may suggest adequacy of the nutrients and absence of deleterious health implications for the birds. It was concluded that SWCC can economically replace 30% of maize in the diets of broiler finishers with no deleterious effects on carcass quality and health of the birds.
  R. Olajide
  Corms such as wild cocoyam [Colocasia esculenta] have potential to replace maize as a cheaper energy source in poultry rations. A feeding trial was conducted to evaluate the effects of graded levels of fermented wild cocoyam [Colocasia esculenta (L.) Schott] corm (FWCC), as substitutes for maize in the diets of broilers at the starter phase. One hundred and twenty unsexed day-old Hybro broiler chicks were randomly distributed to four dietary treatments in a Completely Randomized Design (CRD). There were 3 replicates per dietary treatment with 10 birds per replicate. Diet 1 without FWCC served as the control. Diets 2, 3 and 4 contained 10, 20 and 30% FWCC. Each of the diets represented a treatment. The experimental diets and clean drinking water were supplied ad libitum for 4 weeks (28 days) representing the starter phase of the broiler production. Result of the performance revealed significant (p<0.05) differences in feed intake, weight gain and feed conversion ratio. The economic analysis also showed that cost (58.52) of a kilogram feed was highest (p<0.05) for the control and least (53.10) for 30% FWCC. The least cost (101.24) of feed per kilogram weight gain (p<0.05) was obtained for birds fed 30% FWCC compared to (105.53) for the control. It was concluded that maize can economically be substituted with 30% FWCC in broiler starter diets.
  R. Olajide , A.O. Akinsoyinu , O.J. Babayemi , A.B. Omojola , A.O. Abu and K.D. Afolabi
  Effective utilization of wild cocoyam corm in livestock feed is limited by the presence of anti-nutrient components which requires some forms of processing. The effect of soaking, cooking and fermentation on proximate composition, caloric values and contents of Anti-Nutritional Factors (ANFs) of wild cocoyam [Colocasia esculenta (L.)] Schott corm were determined with the aim of investigating its suitability as a feed ingredient. Raw, Cooked, Soaked and Fermented Wild Cocoyam Corm (i.e. RWCC, CWCC, SWCC and FWCC respectively) were sun dried and their proximate composition, Gross Energy (GE), Metabolizable Energy (ME) and contents of ANFs were determined. Crude protein was significantly (p<0.05) highest in FWCC and significantly (p<0.05) lowest in CWCC. Crude fibre significantly (p<0.05) decreased by the processing methods with the highest values obtained in RWCC and SWCC. Ether extract of RWCC was significantly (p<0.05) higher than for the other processed Wild Cocoyam Corm (WCC). The highest Nitrogen Free Extract (NFE), GE, ME and ME as percentage of GE was obtained in RWCC, FWCC, FWCC and RWCC respectively. Contents of ANFs [tannins, phytate, oxalate, saponin and Hydrocyanide (HCN)] were significantly (p<0.05) reduced by processing methods with RWCC recording the highest value. Fermentation had the highest (p<0.05) percentage reductive values of 42.86, 69.23, 95.05, 73.58 and 57.91% in condensed tannins, hydrolysable tannins, phytate, oxalate and HCN respectively, while the highest (p<0.05) percentage reduction of 48.39% in saponin was obtained in CWCC. There were no activities detected for trypsin inhibitors in all the processed forms of WCC assayed. The results show that the processing techniques adopted significantly (p<0.05) enhanced the nutrients and caloric components and reduced the array of ANFs in RWCC, suggestive of its potential as a feed resource.
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