| bacteria and helminth isolates from bile and faeces of zebu cattle slaughtered for human consumption in the niger delta areas of nigeria. | random bacteriological examination of 300 bile samples aseptically drawn from the gallbladders of adult cattle at slaughter revealed the presence of escherichia coli in 30%, enterobacter aerogenes in 14% and klebsiella aerogenes in 56%. bacteriological examination of another 116 faecal samples revealed esch. coli in 60% and ent. aerogenes in 40%, while parasitological examination revealed 50-100 strongyle ova per gram from pre-rain samples of faeces, 100-850 strongyle eggs per gram for faeces co ... | 1986 | 3539044 |
| fate of nitrogen-fixing bacteria in crude oil contaminated wetland ultisol. | the effect of crude oil on the growth of legumes (calopogonium muconoides and centrosema pubescens) and fate of nitrogen-fixing bacteria in wetland ultisol was investigated using standard cultural techniques. the results revealed observable effects of oil on soil physico-chemistry, plant growth and nodulation as well as on densities of heterotrophic, hydrocarbonoclastic and nitrogen fixing bacteria. the effects however varied with different levels (0.5%, 1%, 5%, 10%, 15% and 20%) of pollution. a ... | 2011 | 21755289 |