Lifespan of Cattle and Horses 69 



8. The lifespan of horses seems to decrease the less they are 

 related to English and Arab thoi'oughbreds. 



9. The most important causes of loss of the stallions were: 

 colic, dermatitis verrucosa (malanders), infirmity of the heart, 

 chest and lungs, and bad covering. 



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