The Vet. Book 



The swelling varies considerably in size, and 

 one or more hocks may be affected. 

 In every case it is a blemish. 



Hock-joint Open (See Joint Open) 



Hoven (Dew-Blown) = Tympanitis 



This is an exceedingly common complaint, 

 affecting both cattle and sheep — more especially 

 cattle — and the commonest cause, in the case of the 

 last-named, is through a piece of turnip, potato, 

 etc., lodging in the gullet, in other words, choking ; 

 but hoven occurs from other causes, such as a 

 sudden change of food, turning out to graze 

 before the dew is off the grass, more especially 

 when the stomach is in an unprepared condition. 



A frosted cabbage ; turnip ; swede ; etc., will 

 frequently cause an ox to become hoven. 



Hoven sometimes comes on in anthrax, and 

 calves frequently come blown immediately after 

 they have had their milk. 



There is a condition known as "chronic" hoven 

 in which cattle blow up immediately after they have 

 been fed, and the author's experience is that such 

 cases are invariably incurable. It arises either 

 through the presence of a foreign body — such 

 as a nail or hair-pin (swallowed), making its 

 exit through the wall of the rumen (paunch) to 

 penetrate the heart, setting up inflammation of the 



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