566 iOWA DEPARTMENT OF AGRICULTURE 



Having talked with a great many breeders and shippers of 

 swine they have invariably expressed their opinion that more 

 tlian half of onr marketal^le hoos wc^e slnnglitered at abattoirs 

 outside of the state. The figures contained in the above letter 

 show 61/2% of the hogs slaughtered affected more or less with 

 tuberculosis. This 61/2% at an average weight of 250 lbs. figured 

 at 7e per lb., shows that we marketed in Iowa $2,984.8-1:7.50 worth 

 of pork infected with tuberculosis. It is safe to double these 

 figures and to estimate that we produced and sent to market not 

 less than $6,000,000 worth of pork infected with tuberculosis. It 

 is readily explained by the fact that most hogs receive their tuber- 

 cular infection from following after the cattle. This is true not 

 only of the ordinary herd of breeding cattle but it is also true 

 of the steers in the feed yard. We believe the time is not far 

 distant when everj^ breeder and feeder will realize the importance 

 and necessity of testing not only his breeding cattle but his 

 steers in the feed yard as Avell before allowing any hogs to run 

 after them. 



Without prolonging the discussion on this subject further we 

 present herewith a number of cuts which we obtained from the 

 Cattle Commissioner of the state of Vermont and which were 

 originally prepared by the Department of Agriculture at Wash- 

 ington, D. C. 



