Diseases of Domestic Animals in Nyasaland. 15 



Animals Susceptible to Trypanosoma pecorum. 

 I. The Mvera Cattle Strain. 



Table XIV. 









Period of 



Duration 





Date. 



No. of 



Source of virus. 



incubation, 



of disease, 



Remarks. 





expt. 





in days. 



in days.* 











Donkeys. 







1912. 













Jan. Zo... 











fetui alive alter oil days. 



26... 



292 







87 ? 



Died of T. pecorum, April 22. 



June 18... 



705 



) > 







Still alive after 233 days. 



i ft 



i UD 









Zoo ,, 



„ 18... 



709 









„ 233 „ 









flat, tip 







Jan. 16... 



15 a 



Natural infection 



? 



— 



Still alive after 387 days. 



„ 16... 



15 b 



,, 





— 



387 „ 



„ 16... 



15 c 



,, 





— 



j> 387 ,, 



„ 16... 



15 d 



„ 





? 



Died at Mvera of T, pecorum. 



„ 16... 



15 e 



„ 





? 



51 I) 



„ 16... 



15/ 



)j 





? 



J> 3 1 



„ 16... 



15 g 







? 



3) >) 



„ 16... 



15 A 









? 



>> >J 



1 ft 



JLUU 



" 





(or 



Died of T. pecorum, April 28. 



„ 16... 



101 







30? 



„ Feb. 15. 



„ 16... 



102 



" 







Still alive after 387 days. 



1 ft 



„ ID... 



l 



1UO 







oni o 



Died of T. pecorum, Aug. 28. 



1 ft 



lb... 



1\J'± 









still ahve atter <J87 days. 



^ ft 

 „ lb... 



1UO 









387 „ 



i ft 

 „ lb... 



i in 







p 



Died at Mvera of T. pecorum. 

 >i >> 



1 ft 



ID, . . 



1 1 % 







p 



T t?D. ID. . . 



99ft 



TTwrivn Tl^iT 1 ft 



1 1 





btiU alive alter odd days. 



„ 16... 



227 



16 



7 







„ 356 „ 



„ 16... 



228 



„ i6 



11 



— ■ 



„ 356 „ 









10 



103 











Goats. 







Feb. 14... 



203 



From Cow 103 



12 



29 



Died of T. pecorum. 



,, 14... 



205 



,j 103 



10 



40 



,, 14... 



one 



,, 103 



15 



35 



,, 



„ 14... 



208 



„ 103 



12 



36 





„ 16... 



178 



From Dog 16 



12 



38 



a » 



„ 16... 



199 



,, 16 



11 



209 



i) » 



„ 16... 



204 



„ 16 



10 





Still alive after 356 days. 







Average 



12 



64 











Dogs. 







Jan. 17... 



16 



From Cow 102 



26 



30 



Died of T. pecorum. 



„ 17... 



17 



„ 103 



13 



56 



„ 17... 



18 



„ 101 







Never showed trypanosomes. 



„ 17... 



19 



100 



13 



56 



Died of T. pecorum. 



Feb. 14... 



217 



103 



16 



28 



„ 16... 



212 



From Dog 16 



6 



26 





„ 16... 



214 



16 



10 



26 





„ 16... 



218 



16 



17 



22 





„ 16... 



225 



„ 16 



10 



26 









Average 



14 



31 





Duration includes the days of incubation ; it dates from day of infection. 



