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Characteristics of erythroid colonies formed by bovine marrow progenitor cells in methyl cellulose cultures
(University of Nairobi., 1982-03)
Bovine erythroid colonies containing eight to 100 erythroid cells were successfully cultured in methyl cellulose. The colonies required four to five days to mature and a direct linear relationship (r = 0.99) between the ...
Inhibition of bovine bone marrow granulocyte/macrophage colony formation in vitro by serum collected from cattle infected with Trypanosoma vivax or Trypanosoma congolense
(University of Nairobi., 1979-06)
Serum collected from cattle infected with Trypanosoma vivax or Trypanosoma congolense inhibited bovine granulocyte/macrophage colony formation in methyl cellulose cultures. Maximum inhibition was caused by serum collected ...
Ticks and tick-borne parasites associated with indigenous cattle in Didtuyura Ranch, southern Ethiopia
(University of Nairobi., 1998)
Tick populations were monitored between October 1991 and September 1992 at monthly intervals on 10 Boran (Bos indicus) heifers at Didtuyura ranch, Yabelo district, Ethiopia. Twelve different tick species in four genera ...
Drop-off patterns for engorged adult females, nymphs and larvae of Rhipicephalus appendiculatus
(University of Nairobi., 1991-12)
A drop off rhythm of engorged Rhipicephalus appendiculatus Neumann was demonstrated for females and engorged nymphs, but not for larvae. Seventy per cent of 1279 engorged R. appendiculatus females dropped off the animals ...
Cuticular lesions: a non-infectious integumental disease of Glossina species
(University of Nairobi., 1981-12)
Purified suspensions of macerated cuticular lesions from the insectary-reared tsetse Glossina morsitans morsitans were applied on laboratory-reared newly emerged teneral tsetse by three pathways: topical application on the ...
Experimental infections of the tick Rhipicephalus appendiculatus with entomopathogenic fungi, Beauveria bassiana and Metarhizium anisopliae, and natural infections of some ticks with bacteria and fungi
(University of Nairobi., 1995-09)
Two strains of the entomogenous fungus, Beauveria bassiana, were found to be pathogenic to all stages of the tick Rhipicephalus appendiculatus in the laboratory. A mortality of up to 73 percent of unfed adults was recorded, ...
Some aspects of sexual receptivity and refractory behaviour in female Glossina morsitans morsitans Westwood
(University of Nairobi., 1993-12)
Sexual receptivity was investigated in female Ghssina morsitans morsitans Westwood after mating. The degree of insemination and duration of copulation could affect sexual receptivity when females mate with immature males. ...
Prospects for Biological Control of Livestock Ticks,Rhipicephalus appendiculatusandAmblyomma variegatum,Using the Entomogenous FungiBeauveria bassianaandMetarhizium Anisopliae
(Elsevier, 1996-01)
Both Beauveria bassiana and Metarhizium anisopliaeinduced approximately 30% mortalities in adultRhipicephalus appendiculatusfeeding on rabbits whileM. anisopliaeinduced a mortality of 37% in adultAmblyomma variegatum.Both ...
Further observations on survival and fertility of Glossina morsitans morsitans maintained on immunized rabbits
(University of Nairobi., 1984)
A significant increase in mortality was observed in Glossina morsitans morsitans maintained for approx. 45 days on rabbits immunized with tsetse or bovinetrypsin. Tsetse and bovine trypsin were observed to cross-react when ...
Cryopreservation of bovine hemopoietic progenitor cells in liquid nitrogen
(University of Nairobi., 1981-04)
Bovine marrow granulocyte/macrophage and erythroid progenitor cells maintained viability after storage in liquid nitrogen for 2 to 4 weeks. The granulocyte/macrophage progenitor cells maintained 100% viability for 4 weeks, ...