192 PEINCIPLES OF VETEBINART SUEGEEX 



bones of the head, a row of beaded enlargements at the umou 

 of ribs and costal cartilage, etc. 



What symptoms does the hving rachitic animal exhibit f ■ 



The animals more commonly exhibiting this disease are 

 swine ; next dogs, birds, and more rarely the colt and calf. 

 The creatures appear poorly nourished, they walk stiffly, may 

 stagger and tire easily. The knee, hock, stifle, fetlock may be 

 swollen and is tender on pressure. 



How do you treat rachitis ? 



Establish hygienic conditions by changing food, stabling, 

 etc. Prescribe a tonic treatment and phosphorus; horse, from 

 •J to 3 grains ; dog, 1-20 to 1-120 grain. 



Osteomalacia. 



What is osteomalacia ? 



A constitutional disease of grown animals, characterized 

 by softening and fragility of the bones. 



What anim,als are m,ost exposed to it ? 



Mainly cows yielding a great deal of milk. 



What are the causes of osteomalacia ? 



They are obscure. It is met with on high and low lands 

 when fed the best of food or when succulent and watery on 

 calcareous soils and those deficient in lime. The three theories 

 as to its nature at this day are : 



1. A process of decalcification of the bones pure and 

 simple. 



2. A chronic inflammation of the bone. 



3. Infectious disease. 



