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Articles by I.A. Amata
Total Records ( 2 ) for I.A. Amata
  L. Bratte , I.A. Amata , S.I. Omeje and G.N. Egbunike
  In an investigation conducted to determine the effect of utilizing seeds of the African Pear (Dacryodes edulis G. Don, H.J. Lam) as a feed ingredient in the diets of broiler breeders on semen characteristics, 25 adult Anak Titan breeder cocks aged 20 weeks were randomly allotted to five dietary treatments of 5 cocks per treatment and fed diets in which Dacryodes edulis seed meal (DESM) replaced maize at 0% (control), 15, 30, 45 and 60% for 8 weeks. After 2 weeks of feeding the experimental diets, semen was collected twice weekly from the cocks by the lumbar massage technique. Semen colour or consistency scores were significantly lower for cocks which received the control and 15% DESM diets than for cocks on the 45 and 60% DESM diets. Mean semen volume was significantly (p<0.01) higher in cocks fed with 15, 30 and 45% DESM (0.33, 0.37 and 0.35 mL, respectively) than in those which received the control diet (0.21 mL) and in those fed 60% DESM (0.19 mL). Sperm concentration (x106 mL-1) generally increased significantly (p<0.01) as the level of DESM in the diet was increased. Negative but non-significant (p>0.05) correlations existed between body weight and sperm motility, semen pH, ejaculate volume, sperm concentration and percent live sperm while body weight bore a positive (but non-significant) correlation with percent abnormal sperm and a highly significant (p<0.01) positive correlation with semen consistency (0.99). It was concluded that DESM had no adverse effect on semen quality of broiler breeders even if it replaced as much 45-60% of dietary maize in broiler breeder diets.
  I.A. Amata
  The young leaves of Myrianthus arboreus plant (2n = 28), are popularly consumed in West Africa as vegetable soup. In Delta and Edo States of Nigeria, the leaves are rated amongst the most popular indigenous vegetables. In the livestock industry in Nigeria browse plants are becoming and integral part of livestock feeds due to their high nutrient profile, seasonal availability and affordability. In this study, the fresh leaves of Myrianthus arboreus were analyzed to determine the nutritive value. Parameters measured include the proximate composition, amino acid profile, mineral composition, metabolizable energy and the presence of some anti-nutritional factors. Data obtained showed a crude protein content of 18.74% DW, a value which is comparable to some common Nigerian vegetables. Crude fiber content was 11.6% DW, which is also within the range of reported values for some other Nigerian vegetables. The ash content was high 16.4% DW which is an indication of high mineral content. The ether extract (13.1% DW) is also within the range of some edible Nigerian leaves and metabolizable energy values of 1333.4 kcal kg¯1 is an indication of it=s suitability as an energy provider in the diets of livestock. Nine amino acids were analyzed, two of which were sulfur containing amino acids and were found in varying proportions. The anti-nutritional factors analyzed include: alkaloids, 640 mg/100 g, tannins, 4750 mg/100 g, saponins, 1860 mg/100 g, trypsin inhibitors 341.2 mg/100 g, phytic acid 25 mg/100 g, mycotoxins, 0.006 mg/100 g, oxalate, 15 mg/100 g and phenol, 1.12%. Ranges detected were within acceptable limits.
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