GRANULAR VENEREAL DISEASE AND ABORTION IN CATTLE. 3 



THE GRANULAR VENEREAL DISEASE. 



DISTRIBUTION AND PREVALENCE. 



Table 1 presents concisely the results of the observations regard- 

 ing the distribution and prevalence of the granular venereal disease 

 throughout the territory covered. 



Table 1. 



-Prevalence and geographical distribution of the granular venereal disease in 

 cattle. 





Animals 

 observed. 



Veal calves. 



Spayed heifers. 



Place. 



Re- 

 corded. 



Not re- 

 corded. 



Nodules or 

 granules 

 present. 



Nodules or 



granules not 



present. 



Nodules or 

 granules 

 present. 



Nodules or 



granules not 



present. 





Num- 

 ber. 

 1,578 

 552 

 599 

 193 

 328 



Num- 

 ber. 

 91 

 23 

 6 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 



Per 

 cent. 



Num- 

 ber. 

 13 

 12 



74 



Per 



cent. 



50 



92 



70 



Num- 

 ber. 

 13 

 1 

 32 



Per 

 cent. 

 50 





6 



8 



40 

 33 



9 

 16 



60 

 67 



8 





30 



Fort Worth 



8 



60 



72 



23 



28 





















Total 



3,250 



128 



74 



61 



48 



39 



99 



68 



46 



32 









Cows under 4 years old. 



Cows 4 years old or over. 



Place. 



Nodules or gran- 

 ules present. 



Nodules or gran- J Nodules or gran- 

 ules not present, i ules present. 



Nodules or gran- 

 ules not present. 





Number. 



273 



140 



427 



47 



19 



Per cent. 

 90 

 95 

 98 

 90 

 100 



Number. 



29 



7 



9 



5 



Per cent. 



10 

 5 

 2 



10 



Number. 



1,078 



298 



26 



124 



201 



Per cent. 

 86 

 79 

 79 

 88 

 89 



Number. 



172 



79 



7 



17 



25 



Per cent. 

 14 





21 





21 





12 



Fort Worth 



11 













Total 



90S 



95 



50 



5 



1,727 



85 



300 



15 





































Table 1 shows a total of 2,806 cases where nodules or granules in 

 the vulvar mucosa were macroscopically visible, as against 444 cases 

 where they were not visible. This makes the average visible infec- 

 tion in all classes of animals 86 per cent. 



Viewing the malady as one fundamentally venereal in character, 

 though readily and abundantly transmitted otherwise, we observe 

 the lowest ratio of infection, 61 per cent, in heifer calves slaughtered 

 for veal and ranging between 6 weeks and 1 year in age, presum- 

 ably because they had not copulated and hence had escaped the 

 basic mode of infection. The next lowest ratio of infection, 68 per 

 cent, is that of spayed heifers, where again, when spaying had been 

 properly done, copulation was excluded as a factor in transmission. 

 In the next class, comprising entire females from 1 to 4 years of 

 age, essentially all of which had presumably been bred, the number 

 of affected advances to 95 per cent, to fall again to 85 per cent in cows 

 over 4 years of age. 



