| ticks (acari:ixodidae) of the blue and white nile ecosystems in the sudan with particular reference to the rhipicephalus sanguineus group. | twenty-four adult ixodid tick species, infesting livestock and some wildlife hosts along the blue and white nile in the sudan, were identified. three species, boophilus geigyi, rhipicephalus camicasi and r. bergeoni, were recorded for the first time from the sudan. tick numbers on indigenous breeds of cattle (bos indicus) were relatively low, ranging between 17.1 and 40.5 per animal. young cattle grazing with the herd carried significantly fewer ticks than older animals. with the exception of b. ... | 1987 | 3331134 |
| age specific prevalence and intensity of schistosoma bovis infection in sudanese desert sheep in the white nile province. | a survey of ovine schistosomiasis was carried out in a schistosoma bovis enzootic area in the central sudan. three hundred desert sheep, representing different age groups, were screened for infection, using pitchford's faecal egg counting technique. no infection was detected in animals under one year old, but from the age of 18 months onward, the prevalence increased progressively from around 20 per cent to 60 per cent in six-year-old sheep, and this was accompanied by an increase in infection i ... | 1983 | 6622838 |
| managing the wetlands. people and rivers: africa. | at the current population growth rate in africa, the population will reach 1 billion by 2010. water is needed to sustain these people, yet rainfall in africa is erratic. africans are already confronting a shortage of freshwater. agriculture supports 66% of the population of sub-saharan africa. sound agricultural development is needed to curb rural-urban migration, but a constant supply of freshwater is essential. major rivers (the limpopo in southern africa and the save/sabi in zimbabwe and ... | 1993 | 12287015 |
| current situation of peste des petits ruminants (ppr) in the sudan. | the current situation of ppr in sudan was investigated. a total of 61 tissue samples were collected from various ppr suspected outbreaks in sheep in sudan during 2008. collected tissue samples were tested for ppr antigen using icelisa, ppr antigen was detected in 26 out of 61 samples (42.6%). highest antigen detection rate was in specimens collected from western sudan. a total of 1198 serum samples were collected from sheep (n = 500), camels (n = 392), and goats (n = 306) from different areas in ... | 2010 | 19548103 |