Show pure ime bred animals not prone to T t 6 one breed Is as susceptible as another prepared Pr paril by the th united states stata of there la is no relation between the breeding of cattle and their i tibi lity to tuber cul ono one breed is 44 a susceptible as another and grade are as likely to become infected as pure bereft these are conclusions of 0 veterinary specialists of the bureau of animal industry united states department of agriculture based on several years experience la in eradicating bovine tuberculosis in support of the conclusion the bureau veterinarians have compiled a large number of statistics arranged according to the various breeds ard and whether the animals are pure bleds or grades from july 1 1921 to april 1 1924 tuberculin tests testa were applied to pure bred cattle of which 47 per cent were found to ic e during the same period grade cattle were subjected to the test of which 48 per cent reacted among the lie pure bred and grade cattle representing the various breeds the federal specialists have been able to find no evidence that any breed Is more dupre susceptible or r amant reil stant than a any UY other these conclusions apply to large groups representing conditions tor for the entire country it la Is well known that certain localities have more infection than others but the management of cattle extent of buying and selling without paying proper attention to health the control of sanitary conditions and the individual resistance si of the animals anima appear to be the principal factors that determine the degree of Infect infection lom breeding apparently patently ly bar nothing to do with tile the extent of tuberculosis |