Showing papers by "Ladoke Akintola University of Technology published in 1999"

Comparison of the supplemental effects of Saccharomyces cerevisiae and antibiotics in low‐protein and high‐fibre diets fed to broiler chickens

Abstract: Two experiments were completed to compare the supplemental effects of yeast Saccharomyces cerevisiae and sub‐therapeutic antibiotics in high‐fibre and low‐protein diets for broiler chicks. In experiment I, yeast was added at 1.5, 3.0 and 6.0gkg‐1 while penicillin, tylosin or neoterramycin were added at 150 mg kg‐1 into different batches of a high‐fibre diet containing 250 g kg‐1 palm kernel meal. Saccharomyces cerevisiae and antibiotics increased BW, BWG, FCR, feed intake, carcass and breast weights above the control. Small intestine weight was reduced by antibiotics, while yeast caused a lower deposition of abdominal fat. Liver weights of different treated broilers were similar. The performance indices were superior on penicillin and 3.0 g kg‐1 yeast compared to other supplements evaluated. In the second experiment, 1.5 and 3.0 g kg‐1 of yeast, and 0.75 mg kg‐1 of procaine penicillin, zinc bacitracin and tylosin were separately added to a 180 g kg‐1 crude protein diet. Performance of the chicks with addi...

Comparative study of toxicity of some essential oils to larvae of three mosquito species

Abstract: The toxicity of the essential oils from the leaves of Lantana camara L., Eugenia uniflora L. and fruits of Aframomum daniellii K. Schum to the fourth instar larvae of Aedes aegypti, Anopheles gambiae and Culex pipiens fatigans was investigated. The results indicated that 0.02-0.04% of the oils produced 90-100% mortality on the larvae of all the three mosquitoes. The oils from E. uniflora and L. camara at a concentration of 0.02% were more toxic to Culex pipiens fatigans and Aedes aegypti (producing 100% mortality at 24h.) than Anopheles gambiae. Key Words: Lantana camara, Eugenia uniflora, Aframomum daniellii, essential oils, toxicity, mosquito larvae. Nig. J. Nat Prod. And Med. Vol.3 1999: 74-76

Volatile leaf oil constituents of three Eucalyptus Species from Nigeria

Abstract: The composition of the essential oils of the leaves of three Eucalyptus species: E. alba Reinw ex Blume, E. deglupta Blume (syn. E. naudiniana F.v.M.) and E. saligna Sm. growing in Nigeria were determined by the use of GC and GC-MS. The leaf essential oil of E. deglupta predominantly comprised sesquiterpenoids (48%), of which E-nerolidol was the major component (34.8%). E. alba and E. saligna volatile oils contained monoterpenoids in substantial amounts and the main constituents were α-thujene (32.9-63.8%), α-pinene (0.7-24.7%), p-cymene (0.6-12.9%) and 1,8-cineole (12.2-13.3%).

Fractal Analysis and Seismicity of Bengal Basin and Tripura Fold Belt, Northeast India

Abstract: Northeast India experienced compressive forces from the Himalayan Arc in the north and the Burmese Arc in the east, which led to the development of a number of seismogenic faults, fractures and lineaments. It is observed that the characteristics of earthquakes occurring on an active fault are closely related to the irregularity of fault geometry. Because of their rough appearances over many length scales, faults can be conveniently regarded a. fractal sets, and their georretrical irregularity can be quantified using fractal dimension. We have calculated fractal dimension of the distribution of faults in two tectonic blocks, Bengal basin and Tripura fold belt, in the northeast India. We found that in the spatial sense the fractal dimension and the seismicity are positively correlated.

Book sufficiency and press efficiency: necessary tools for man, nation and development

Abstract: This paper discusses book sufficiency and press efficiency as necessary tools for man, nation and development in Nigeria. The study concludes that: there is book scarcity at all levels of the educational system in Nigeria due to the non‐encouragement of local publishers and authors; the western part of the country has most of the textbooks available (in English, maths and science) in the country, followed by the eastern part where book piracy is at about 50‐70 per cent, while it is grossly inadequate in the northern part of the country. Uneven distribution of the few available books in the country results in non‐functional libraries in primary schools and few functional ones in secondary schools. The heavy dependency on foreign textbooks and journals at the tertiary level of the educational system should be discouraged, so that indigenous technology is encouraged. Recommendations are made to the Federal government of Nigeria.

Relationship between the ingestion of cyanogenic glycosides and their excretion in urine

Abstract: Quantitative relationship between orally administered pure linamarin (cyanogenic glucoside) and crude cyanogenic glucoside preparation from cassava and their excretion in 24 11 urine, as a possible means of estimating average daily intake - of cyanogenic glucoside of cassava by animals and man was investigated in rats. There was no statistically significant difference (pe0.01) between the mean of the percentage excretion of pure linamarin (%=20.652.37%) and that of crude * cyanogenic glucoside (f = 21'.1%3.3%). The urinary excretion of those compounds was found to be dose-dependent kith good positive correlation (r = 0.75 for linamarin and r = 0.74 for crude cyanogenic glucoside) between ingestion of the glucosides and their excl-etion in urine as glucosidic cyanide. These results indicate that average daily intake of cyanogenic glycosides of cassava can he assessed lty monitoting mine.