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Articles by S.B. Afolayan
Total Records ( 3 ) for S.B. Afolayan
  S.B. Afolayan , I.I. Dafwang , T.S.B. Tegbe and A. Sekoni
  Sweet Potato Meal (SPM) was used to substitute maize on weight for weight basis as a dietary source of energy for starter and finisher chickens. The SPM was incorporated at 0, 10, 20, 30, 40, 50 and 60% levels in both studies without adjustments for energy and protein. Ross broiler chicks obtained from a local hatchery were used for the studies. Three replicates of 15 chicks each were randomly allocated to each of the 7 treatments in a Completely Randomized Design (CRD) for the starter phase while the number of birds was reduced to 14 per group for the finisher phase. Parameters measured or calculated include feed intake, body weight gain, feed efficiency, feed cost, feed cost/kg wt. gain, mortality and carcass characteristics. The starter phase study was on 1 to 5 week-old chicks while the finisher study was on 6 to 9 week-old chickens. The trend of results in the two phases were similar and showed that weight gain, feed intake and total cost of raising birds decreased significantly (p<0.5) while the feed cost/kg wt. gain and feed: gain ratio increased (p<0.05). The control, 10 and 20% SPM diets gave similar feed efficiency. The control gave the best performance, though its performance was not different (p>0.05) from those of the 10 and 20% SPM diets. Dietary SPM levels had no adverse effects on mortality and carcass characteristics. It is concluded that SPM should not be included beyond 20% level when substituted for maize on a weight for weight basis without adjusting the dietary protein and energy.
  S.B. Afolayan , I.I. Dafwang , A. Sekoni and J.O. Jegede
  A study was conducted to compare maize and Sweet Potato Meal (SPM) as sources of energy in grower chickens’ diets while another was conducted to determine the effect of SPM on the performance of the birds used in the grower study. A total of 210 pullets aged 10 weeks of Shika Brown breed were used for the grower study, while a total of 180 chickens aged 23 weeks acquired from the proceeds of the first study were used for the layer study. Five treatments comprising of diets containing 0, 10, 20, 30 and 40% levels of SPM were applied in both experiments in a completely randomized manner and performance of birds were monitored at both phases. Each of the experiments lasted 12 weeks. Result of grower study showed that the control, 10 and 20% SPM diets produced similar weight gain, final weight, feed efficiency and feed cost kg-1 weight gain and were superior (p<0.05) to 30 and 40% SPM diets. Result of the layer experiment showed that the control, 10 and 20% SPM diets produced similar final body weight, weight gain, feed intake, hen-day egg production and cumulative egg production/bird which were significantly better (p<0.05) than those produced by the 30 and 40% SPM diets. Ages at 1st egg and at 5% production were least (p<0.05) for the control birds while the age at 50% production was least for the 10% SPM diets. From the result, it is inferred that grower chicken or young layers should not be fed with diets containing more than 20% SPM.
  J.T. Amodu , O.S. Onifade , I.A. Adeyinka , J.O. Jegede and S.B. Afolayan
  Legume tree crops, which establish easily and do not require extensive agronomic inputs, constitute potentially valuable sources of supplementary feeds that subsistence and medium-scale livestock farmers in the tropics could use to improve livestock nutrition and productivity. A field trial was conducted with Gliricidia sepium cuttings to investigate the effect if three stock lengths (20, 30 and 40 cm), two stock diameters (1.5-2.5) and (3.0-3.5 cm) and three planting angles (30° , 60° and 90°) in a factorial experiment. There were high significant differences (p<0.05) in all the growth parameters of the stock diameters and stock lengths used. The highest dry matter yield of 3.83, 4.61 and 4.65 t ha-1 were produced by stock length 20, 30 and 40 cm, respectively. The highest planting angle of 90° produced the tallest shoot height and biggest basal diameter, while the least planting angle of 30° produced the least shoot height and basal diameter, respectively. The interactions between the smaller stock diameter and the least planting angle (30° ) produced the least values of growth parameters. Gliricidia cuttings could be easily established with thicker stock diameter of not less than 3.0 and 40 cm stock length, planting in an angle between 60 and 90 degrees.
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