Tuberculosis. 489 



Breeding Healthy Stock from Parents with Latent Tuberculosis. 

 When a State is not pledged to exterminate tuberculosis by 

 prompt and radical measures, it is quite possible to raise healthy 

 stock from sires and dams that have the disease in a latent form. 

 It is very exceptional that calves are born tuberculous. If, then, 

 they are kept in a pure environment and furnished with the milk 

 of sound nurses, or even with the milk of their own tuberculous 

 dams, after it has been heated for one-quarter of an hour to 180° 

 F. or 212° F. they can be preserved in perfect health. 



This is especially adapted to herds of valuable thoroughbreds, 

 the destruction of which would be a serious loss, and the preser- 

 vation of the strain of blood a most desirable object. 



The whole herd should be tested with tuberculin, and the ad- 

 vanced and generalized cases, that can be detected by objective 

 symptoms, should be at once destroyed and safely dispcsed of. 

 The animals in good condition and that have not reacted should 

 be placed in a new barn and yard, or where no tubercle has been, 

 or in places that have been thoroughly disinfected, under special 

 attendants. There will remain the animals in good condition 

 with no objective symptom, but that have reacted, and these are 

 placed in separate barn, yard and pasture well away from other 

 stock, under their own attendants, for breeding purposes. They 

 should have the best of food and air, clean, well lighted, roomy 

 buildings with shelter from storms, clean sheltered yards, and in 

 summer, pasturage. Any cow showing indication of active ad- 

 vance or generalization of the disease (cough, wheezing, dyspnoea 

 under exertion, excessive pallor of mucosae, unthriftiness), 

 should be at once separated and de.stroyed as endangering the 

 reinfection of others, and the stable subjected to disinfection. 

 The calf, as soon as born, must be removed to a special building 

 or park, where it shall get milk from a .sound cow or that of its 

 own dam after it has been carefully sterilized. After sterilization 

 the milk cannot safely be returned to the unscalded pail into 

 which it was drawn from the cow, and it should be fed by separ- 

 ate attendants who have not milked nor handled the affected 

 animal. Any loss of condition, unthriftiness, cough or scouring 

 on the part of any of the calves .should be the signal for its separ- 

 ation from its fellows, .subjection to the tuberculin test, and, if it 

 reacts, for its destruction and the disinfection of the building 



