1909.] Amakebe: A Disease of Calves i7i Uganda. 2G7 



Experiment 1905. 

 Sept. 2-4, 1909.— Injected Amakebe blood. 





SepC.1903 Oct. 







^6 



27 







50 



/ 











6 



r 



8 



3 





II 



IZ 



15 





15 



16 



17 



16 



& 



ioyi 









iot° 

































































103° 



t 

























































\ 







102° 













f 











f 









f 















i 



\ 







u 







t 



ioi° 































































ioo° 































































Chart 13. — Experiment 1905, represents the Temperature Curve of a Calf into which 

 Blood from a Case of Amakebe has been injected. 



Remai-ks. — Eesult negative. 



On three other occasions (Experhnents 659, 1585 and 1586) was this 

 experiment repeated, and always with a negative result. 



It may be concluded, then, that Amakebe differs from Piroplasma 

 higeminum and Piroplastna mutans, in that it is not inoculable, whereas tlie 

 latter diseases are. 



Remit of Exposing Susceptible Calves in a Kraal eontaviiiiated by Amakebe. 



Kampala, the native capital of Uganda, has a V)ad reputation for Amakebe. 

 This is probably due to the number of calves stabled in the vicinity. Kampala 

 has a large population of both Europeans and natives, and the milk supply is 

 obtained from private cows kept in the town. The herds of cattle belonging 

 to different individuals are grazed in various parts of the country, but as soon 

 as a cow has calved, she is sent into Kampala to provide milk for her owner. 

 Almost all the calves brought in die of Amakebe, which brings about an 

 unhealthy state of things in the cattle kraals where the calves are kept 

 during the day. 



The following experiments w ill show the effect of exposing susceptible 

 calves for a few days in a Kampala cattle kraal : — 



Experiment 1590. 



To ascertain the Effect of exposing a susceptible Calf in a Kraal contaminated by 

 , Amakebe. 



Oct. 11, 1909. — Sent this calf into Kampala. Oct. 17. — Eeturned from Kampala. 



The following chart shows the course of the temperature, and the presence or absence of 

 Piroplasina bicjem/num or the small rod-and-ring-formed piroplasraa in the blood. 



Remarks. — The result of exposing this calf to a contaminated kraal is an attack of 

 Amakebe, characterised by high fever, swollen glands, and deatli. 



Y 2 



