J. O. Oyewale

Osmotic fragility of erythrocytes of west African dwarf sheep and goats: effects of temperature and pH.

The osmotic fragility of erythrocytes of West African Dwarf (WAD) goats and of WAD sheep was determined at different temperatures and pH. Erythrocytes of the goats were more susceptible to osmotic haemolysis than those of the sheep. However, the osmotic fragility of erythrocytes of both species increased with a decrease in temperature or pH.

Osmotic fragility of erythrocytes of two breeds of domestic fowl in the warm humid tropics

Erythrocyte (RBC) count, packed cell volume (PCV) and haemoglobin (Hb) values were found to be higher in Nigerian domestic fowls than those in Hubbard fowls. PCV and Hb values were higher in males than in females in both breeds. Erythrocytes of the Nigerian fowl were observed to be more susceptible to osmotic haemolysis than were erythrocytes of the Hubbard fowl. Erythrocytes of male fowls were osmotically more fragile than were those of female fowls in both breeds.

Coccidiosis in indigenous pigs in Ibadan, Nigeria

Eimeria debliecki, E. neodebliecki, E. perminuta, E. spinosa, E. suis, E. porci, E. cerdonis, E. scabra and Isospora suis were identified in the faeces of indigenous pigs; 320 (78·0%) of the 410 pigs were excreting oocysts, with varying degrees of subclinical infection. E. neodebliecki (15·4%) was the most prevalent species. Mixed infections occurred in 24–1% of the infected pigs. Oocyst counts in excess of 10 000 per gram of faeces were recorded in 3·4% of the 320 infected pigs.

Plasma Electrolyte, Protein and Metabolite Levels in Nigerian White Fulani Cattle under Two Different Management Systems

Plasma electrolyte, protein and metabolite concentrations were determined in White Fulani cattle kept under intensive and extensive systems of management in Nigeria. The total protein and albumin values were significantly higher (p<0.02 and p<0.05, respectively) under the intensive management systems. The plasma bicarbonate, calcium, inorganic phosphate, potassium, sodium, globulin, creatinine and urea values were similar under both systems of management.