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Articles by O.A. Isah
Total Records ( 6 ) for O.A. Isah
  O.M.Arigbede , J.E.N. Olatunji , O.A. Isah , T.O. Bawala and K.A. Oseni
  An experiment was conducted to compare the performance of WAD goats fed Panicum maximum basal diet and concentrate supplements of Palm Kernel Cake (PKC), Soya Bean Meal (SBM), Cotton Seed Cake (CSC) and Brewers Dried Grain (BDG). 12 animals were randomized into four groups to represent four treatments and each treatment has three replicates. Each animal represents a replicate. The experiment lasted 10 weeks and followed by three weeks metabolic trial. During the experiment, feed intake, weight gain and digestibility of nutrients were estimated while feed conversion ratio and protein efficiency ratio were calculated. The results obtained placed animals on SBM on top (p<0.05) in all the parameters estimated. This was followed by animals on CSC while animals on BDG had the least performance. The Dry Matter Intake (DMI) and the Crude Protein Intake (CPI) increased from 486.50 and 60.46 in BDG to 546.72 and 91.56 gd-1 in SBM, respectively. Digestibility of Dry Matter (DM) and Crude Protein (CP) increased from 57.90 and 71.80 in BDG and PKC respectively to 70.02 and 86.74% in SBM. The weight gain and protein efficiency ratio increased from 19.83 and 0.33in BDG to 33.36 and 0.37 in SBM, respectively while feed conversion ratio reduced from 24.53 in BDG to 16.39 in SBM. It was therefore, concluded from the experiment that WAD goats utilized SBM better than CSC, PKC and BDG.
  A.O. Fafiolu , O.O. Oduguwa , A.M. Bamgbose , A.O. Oso , O.A. Isah , J.E.N. Olatunji and A.V. Jegede
  A study was carried out to determine the intake and utilization of Mango leaf meal by growing rabbits. Twenty cross weaned rabbits of average weight 700 g were randomly assigned to the five iso-nitrogenous and iso-caloric diets in which wheat offal was substituted at 0, 25, 50, 75 and 100%. The results showed that rabbits weight reduced significantly (p<0.05) across the dietary treatments. Weight gain and feed intake were affected significantly (p<0.05) by the treatment imposed on the rabbits. Dry matter digestibility, ash and crude fibre digestibility were affected across the treatment. Carcass evaluation values were significantly influenced by the treatment except the kidney. The cost kg-1 diet (^) decreased significantly as the level of dietary inclusion of Mango leaf meal increased from 0 to 100%. At the end of the study the highest savings on feed to produce kg-1 was obtained in the group which consumed 100% mango leaf meal diet. This was closely followed by rabbits on 75, 50 and 25%. It was therefore concluded that Mango leaf meal can be fed to weaner rabbits up to 50% level without any adverse effect on performance variables.
  T.O.Bawala , O.A. Isah and A.O. Akinsoyinu
  A study was conducted to examine the efficacy of dietary mineral supplementation (CaPO4 and MgSO4. 7H2O) on the milk mineral (Ca, P, Mg and K) content of the West African dwarf, WAD, goats. Eighteen monoparous lactating WAD does were utilized for feeding trial in a 12-week lactation period in which the does were randomly assigned to one of the three dietary treatment groups (A, B, C) of six animals in a completely randomized design. The three isonitrogenous (15% CP) and isocaloric (2.34 Mcal ME) supplementary diets fed to a based diet of Panicum maximum grass contained graded levels (%) 0, 1 and 2 of Ca/P and Mg supplementations in diets A, B and C respectively. Results showed that treatment effects on dry matter intake, DMT (kg day-1), body weight (Bw) gain (g day -1) circulating levels (mg dL-1) of Ca, P, Mg and K in serum and milk of WAD does were significant (p<0.05). Similar effect on milk yield was highly significant (p<0.01). The mean values (mg dL-1) of circulating levels of CA, P, Mg and K in serum of WAD does on diets A, B and C were: Ca 9.75, 10.00 and 10.13, P 7.15, 7.57 and 7.79; Mg 3.20, 3.52 and 4.54 and K (mmolL-1) 3.53, 3.83 and 3.77, respectively; while corresponding values (mgdl-1) in milk were Ca 121.0, 127.0 and 132.0; P 84.5, 89.78 and 94.08; Mg 18.90, 41.82 and 47.61; and K 158.43, 165.03 and 160.58. The general trend was that increasing dietary mineral supplementation effected a concomitant increase in milk mineral (Ca, P, Mg and K) outputs. Significant positive correlations (r = 0.99, 0.97, 0.73 and 0.85) existed between serum and milk Ca, P, Mg and K contents respectively suggesting that blood is a secondary source of milk mineral secretion in lactating animals.
  O.A. Isah , M.A.S. Nssien and T.O. Bawala
  This experiment was conducted to determine the nutrient composition of processed and stored abattoir waste (AW); a scrapping of the papillae layer of rumen of slaughtered cattle in Nigeria. Effect of diets containing increasing levels of abattoir waste on feed acceptability, haematological and serological indices and internal organ weights of West African Dwarf (WAD) goats were studied. Chemical composition analysis revealed that oven dried sample contained higher Crude Protein (CP), Dry Matter (DM) and Gross Energy (GE) than sun cured sample. (67.70, 91.52 and 3.95 Mcal/kg vs 60.49, 83 45 and 3.54 Mcal/kg). DM contents of oven dried and sun cured AW samples were not stable during storage for 6 weeks in a silo. An increase was observed in CP content of both samples while EE contents decreased during storage. Concentrate diets were formulated such that 0 (A), 35 (B), 70 (C) and 100% (D) of Soy Bean Meal (SBM); a conventional but expensive feedstuff, was replaced with sun cured AW. All diets were approximately isonitrogenous (161-171 g CP kg-1 DM). These diets were fed along with grass ad libitum to 16 growing WAD bucks with mean body weights of 6±1.5 kg in a completely randomized design for 28 days to determine treatment effect on acceptability of feed, hematological and serological profiles and internal organs weights of experimental animals. No significant difference was observed in total intake, however, goats preferred concentrate diets to grass as revealed by DM concentrate intake ranging from 91.31 to 92.21% of total intake. The mean serum metabolite’s indices showed the value of total protein levels of animals on diets A, C and D as 6.40, 6.30 and 6. 33 g 100 mL, respectively. Dietary affect on serum cholesterol and albumin: globulin ratios were significant (p<0.05). Variations observed in haematological indices due to dietary treatments were also significant. Spleen weights were similar (p>0.05) for goats on diet B, C and D, but lower in animals on diet A. Animals on diets C and D had significantly higher heart weights. It could be deducted that replacement of SBM with above 35% might be support good performance and production in good nutrition.
  A.O. Oso , A.M. Bamgbose , O.A. Isah , J.E.N. Olatunji , A.T. Mabadeje , A.A. Alade and A.O. Oni
  Sixteen weaner rabbits of six weeks old, mixed breeds were fed Rice Milling waste based diets at 0, 25, 50 and 75% levels (replacing maize), respectively. This was done for a period of thirty-five days. The weight gain, feed conversion and protein efficiency ratios of rabbits fed 0% level and 25% level were significantly higher than those of rabbits fed 50 and 75% levels of the experimental diet. 0% and 25% levels do not have any significant difference between them. No mortality was recorded and also no physiological changes were observed throughout the thirty-five days of experiment. The nitrogen retention and crude fibre digestibility of diets fed 0% RMW and 25%RMW were significantly (p<0.05) the same and higher than others. Basically, from the performance data, there were no significance differences between the control diet 0% (RMW) and 25% (RMW) when compared, but there were significant differences when compared with diet 3 (50% RMW) and diet 4 (75% RMW), with diet 4 having the least performance. In terms of costing, diet 4 (75%) was the cheapest, but the least performance, while that of diet 2 (25% RMW) had a better performance and at a reduced cost. It can be concluded that RMW can conveniently be included in a weaner ration at 25% level of inclusion (replacing maize) without any adverse effect.
  I. Ikhimioya , O.A. Isah , U.J. Ikhatua and M.A. Bamikole
  Degradability characteristics of dry matter (DM) and crude protein (CP) in four tree leaves and four crop residues were evaluated in this study using the nylon bag technique with three cannulated rams. The results revealed significant variations between the leaves and residues in terms of DM and CP degradability characteristics. The potential degradability of DM ranged from 65.94 to 96.69% in the leaves and 51.28 to 73.77% in the residues whereas DM disappearance after 48 hrs of incubation was from 43.27 to 73.50% and 34.03 to 54.27% respectively. Effective degradability (ED) of DM decreased with increase in outflow rates ranging from a low of 35.88% (k=0.05) to 72.67% (k=0.02) in the leaves and 26.59% (k=0.05) to 54.60% (k=0.02) in the residues. Potentially the degradability of CP in the leaves was between 22.41 and 57.38% and 22.87 and 57.19% in the residues. The least ED (k=0.05) of CP was 14.11% while the highest was 48.01% (k=0.02) in the leaves whereas the residues had a range between 13.20% (k=0.05) and 46.70% (k=0.02). Crude protein disappearance post-incubation for 48 hrs ranged between 17.63 and 53.81% and 14.34 and 53.07% in the leaves and residues respectively. The findings of this study showed that the DM compared with CP in the leaves and residues was more degradable in the rumen with the leaves better in this same regard. The information thus provided by this study could be useful in the planning of ruminant diets particularly in the dry season of the tropics.
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