OCR Text |
Show ABORTION DOES GREAT HARM Disease Disappears Automatically Provided Pro-vided No New Susceptible Anl-' Anl-' mala Are Added. (By IT. C. NEVIUS. Colorado Agricultural Agricul-tural College, Fort Collins, Colo.) Contagious abortion does much damage in some herds. 'It has been found that Infected cows do not continue con-tinue to abort. When it first 'breaks out in the herd a considerable number usually throw their calves. During the second year the abortions will be less, and the third year the cases will be few. In this way the disease disappears dis-appears automatically, provided that no new susceptible animals are added to the herd. Disponing of the cows that have aborted und buying new ones usually results In prolonging the disease dis-ease in the herd. The contagious abortion abor-tion germs are often spread by the hull, so great care need be exercised In purchasing a sire to make sure thut he Is free from the contagion and also not to allow him to serve cows that are affected. |