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Articles by Olayiwola Adeola
Total Records ( 3 ) for Olayiwola Adeola
  Olayiwola Adeola
  A modified true metabolizable energy bioassay was used to determine the nitrogen-corrected apparent (AMEn) and true (TMEn) metabolizable energy of various feed ingredients for ducks. In each of two experiments, which lasted 102 h with a 54-h excreta collection period following a 48-h period of feed withdrawal, six male White Pekin ducks were assigned to each of three test feed ingredients and dextrose. Dextrose-fed ducks were used for estimation of endogenous losses of energy and nitrogen. The test ingredients consisted of corn, bakery byproduct and wheat red dog in experiment 1 and corn, corn gluten meal and soybean meal in experiment 2. The AMEn and TMEn values of corn were similar in the first and second experiments at 3.322 and 3.358 and 3.289 and 3.528 kcal/g, respectively. The AMEn and TMEn values of corn were higher (P < 0.05) than those of wheat red dog (2.519 and 2.662 kcal/g), but lower (P < 0.05) than those of bakery byproduct (3.75 and 3.896 kcal/g). Corn gluten meal had the highest (P < 0.05) AMEn and TMEn values (3.695 and 3.934 kcal/g) among three feed ingredients. The AMEn and TMEn value of soybean meal (2.562 and 2.799 kcal/g) were lower (P < 0.05) than those of corn. The study provide new information on AMEn and TMEn values for bakery byproduct, corn, corn gluten meal, soybean meal and wheat red dog; and demonstrated that the energy values, for White Pekin ducks, of bakery byproduct and corn gluten meal are greater than those of corn or soybean meal.
  Olayiwola Adeola and Jason Shervago Sands
  The objective of this study was to investigate possible interactions between dietary crude protein (CP) and phosphorus (P) in broiler chicks. Two CP levels including an adequate NRC-recommended 230 g/kg or an amino acid-supplemented reduced CP 180 g/kg and 4 level - 4.0, 4.5, 5.0, or 5.5 g of non-phytate P (NPP)/kg in a 2 X 4 factorial arrangement were fed to 6 replicate cages of 6 chicks per cage from 10 to 22 d of age. There were main effects of CP (P < 0.001) and NPP (P < 0.05) concentration on final body weight (FBW), body weight gain (BWG), and gain-to-feed ratio. There was a linear reduction (P < 0.05) in feed intake as dietary NPP level increased. Generally, FBW, BWG and FI were linearly reduced (P < 0.05) with increasing NPP. Gain-to-feed ratio was lower (P < 0.05) for chicks fed the AA-supplemented reduced CP diet than those fed the adequate protein diet. Tibia ash was increased linearly (P < 0.05) with increased dietary NPP, but was not affected by CP. There were both linear and quadratic effects (P < 0.05) of NPP on retention of dry matter and energy. At either CP level, retention of nitrogen and phosphorus was reduced (P < 0.05) with increase in dietary NPP. Retention of P was linearly reduced with increasing NPP concentration and highest in chicks fed the adequate CP diet. These results provide support for an integrated strategy for reducing manure N and P excretion by broiler chickens.
  Olayiwola Adeola
  The duck has a great potential in helping to meet the growing demand for high quality protein in human diets. In order for ducks to meet their potential, more research is needed to establish their dietary requirements. Feeding and excreta collection techniques developed at Purdue University that minimize loss of excreta during collection, the first step towards precise dietary requirement quantification, are described. Using the techniques that were developed, energy and amino acid utilization of White Pekin ducks were evaluated in several studies. Diets supplying 3, 000 kcal ME/kg, 0.6% Methionine, and 1.2% Lysine are adequate to meet duck`s requirement for optimum growth in the first week of life. Predicted ME of diets based on utilization values of individual ingredients was compared with the measured ME in the diets, the result showed that the energy in the feedstuffs had additive when compounded into a diet for ducks. In the case of amino acids, some essential amino acid showed significant associative effect. Enzymes likes xylanase and phytase improved performance and bone mineralization when used in ducks diet. The effect was demonstrated to be due to reduction in digesta viscosity and increased P availability as a result of the use of xylanase and phytase, respectively, the effects being more pronounced in younger ducks. There is need for more research to be done in the areas of amino acid nutrition in ducks and the evaluation of non-traditional feedstuffs.
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