DISEASES OF THE HOG. 107 



nized in the pig. When pigs are fat they have very 

 little breathing space left and therefore are not in 

 a fit condition for fast movement. When it be- 

 comes necessary to drive pigs in this state, particu- 

 larly if the day is hot, great care should be taken 

 not to push them, but allow them to rest occasion- 

 ally. I have known pigs which have been driven 

 or chased when they would strsij from the herd to 

 fall down and never rise again. The exertion caused 

 the heart to propel more blood to the lungs than 

 they could receive in a natural state, causing dis- 

 tention of the vessels which pressed on the air cells 

 preventing access of air resulting in suffocation. 

 When the animal show^s symptoms of fatigue it 

 should be rested for a short time and be given a 

 drink of water. It is also caused by colds, badly 

 ventilated houses and is the result of other dis- 

 eases. 



Symptoms: The animal is in great distress; if it 

 is standing its head w411 hang down and its fore- 

 legs will be wide apart and its flanks heaving at 

 the rate of one hundred per minute; the mouth will 

 be partially open; the eyes are bloodshot; the heart 

 beats tumultuously. In some cases there will be 

 blood oozing from the nose; the pig soon becomes 

 unable to stand and it lies down on its breast with 

 its nose resting on the ground; the legs and ears 

 are cold, and the mouth hot. If the animal is made 

 to rise it will often squeal, but in the majority of 

 cases it will not get up; the pulse is small and indis- 

 tinct and the beat is difficult to make out; (which 

 may be as many as one hundred and fifty per min- 



