Protozoan Cattle Fever. Texas Fever. Paludism of Cattle. 60; 



too, for a length of time, being recognizable for a month in case 

 of recovery. In connection with the watery blood, the mucosE 

 and the muzzle (if naturally white) assume a pallid aspect. Thi 

 is best marked in the absence of icterus, yet even with the yello-v 

 discoloration, the absence of ramifying red vessels is very charac 

 teristic. 



The bowels are at first constipated and the faeces passed ii 

 small, hard balls. I,ater they may assume a reddish brown o 

 chocolate color, and a covering of mucus and fine blood clots. Diai 

 rhcea supervenes in some cases. In passing the fseces, th 

 everted mucosa usually shows a dark red color. 



Course and Duration. Acute cases, above all if traveled o 

 otherwise excited, may terminate in death in 24 to 48 hours 

 More commonly death will take place in 4 to 7 days. Som 

 patients survive longer, but owing to the extraordinary loss a 

 blood globules and the lesionS of important solid tissues they ar 

 unable to rally, become steadily weaker and perish in from tw 

 weeks to three months. Such animals are pale and bloodless 

 weak on their limbs, careless of food, and encreasingly emaciated 

 The pulse is weak and irritable and the eyes sunken. The tem 

 perature becomes normal or nearly so, soon after the suspensio: 

 of the hsemoglobinuria. In cases of recovery there remains fo 

 a month or more an unnatural pallor, with marked loss of cor 

 dition and weakness which are only gradually overcome. Con 

 valescent animals are liable to die of indigestion when overfed 



The mortality averages not less than 90 per cent, in susceptibl 

 mature cattle from a healthy district in the hot season. I,atei 

 from October onward, the tendency is to a milder type of diseas 

 and a greater ratio of recoveries. 



Symptoms of the Mild Type. This is seen mainly in cattle in 

 digenous to the Texas fever district, in sucking calves, and i 

 mature cattle from healthy districts but attacked during the coc 

 or winter season. It can be produced at will by placing a limit© 

 number of ticks (5 to 20) on the skin of susceptible cattle 

 especially in the cool season. Again, it occurs as a relapse i; 

 cattle that have survived an attack earlier in the season. 



Though there are all gradations from the violent type, yet w 

 may set down as mild all cases in which the temperature does no 

 rise above 105" P., running frequently about 103" F. There i 



