DISEASES OF CATTLE. 77 



Water drank from lead pipes or held in lead lined tanks may cause poisoning. 

 Old paint cans thrown into the pasture after a barn or house has been painted 

 sometimes produce lead poisoning in cattle, as cattle usually have a mania for 

 licking paint. 



The symptoms of cattle afflicted with lead poisoning are generally dullness and 

 if standing up, they usually go around in a circle, always going in the same 

 direction, indicating that only one-half of the brain is affected. 



While lying down they keep the head turned toward the flank. There is 

 usually a rumbling in the abdomen, indicating a disturbed condition of the aliment- 

 ary canal, loss of control of the limbs when walking, twitching of the jaws, 

 moving in a circle, convulsions, dehrium, violent bellowing, followed by stupor and 

 death. 



The symptoms generally extend over considerable time, but may end in death 

 after twenty-four hours. 



See Prcscriffioii Xo. 209, fogc 176. 



LEAKY TEAT. 



This is a term usually applied to a cow's teat having too large an orifice or 

 sphincter at the point, or on the side of the teat, allowing the milk to escape nearly 

 as rapidly as it is secreted into the milk channels. 



The same term may be applied to a teat that has a false opening on the side 

 of the teat, sometimes caused by barb wire injuries. This opening allows the 

 milk to escape as rapidly as it is secreted by the glands, or, at milking time the 

 milk is forced out through the side instead of the end opening, wdrich makes it 

 very disagreeable and unsanitary. 



A cow thus afflicted is not a very salable animal ; in fact one familiar with 

 cattle would not consider the purchase of such an animal at any price. 



The proper time to apply treatment to tliis ailment is not during the period 

 of lactation, but on the contrary during the time of rest, after a cow has been 

 dried up. 



The most practical method for treating such cases is to cauterize the opening 

 with either caustic potasli, or a hot knitting needle, then wash the teat with a 

 solution of Germ Killer and apply Healing Oil. 



See Prescription Xo. 67, page \76. 



"or temporary relief of a leaky teat, apply collodion after milking. 



LUNG FEVER. 



(See Inllammation of the Lungs, page 75.) 

 Sec Prescription Xo. 41, page 176. 



LUMP JAW, OR ACTINOMYCOSIS. 



The first appearance of Lump Jaw is either an enlargement of the jaw bone or 

 an enlargement of the glands of the throat, which are just back of the angle of the 

 jaw and at first they may be loose from the jaw, but later on become adhered. 



These swellings on the jaw or of the glands when broken will discharge a yel- 

 lowish sticky pus which sometimes contains hard yellow granules or fragments of 

 bone. As a result of the swelling, the teeth may be pushed out of their natural posi- 

 tion and consequently an animal cannot masticate its food properly, and will soon 

 lun down in flesh; the decaying of the bone oftentimes results in the destruc- 

 tion of the tooth sockets so the teeth will often fall out. 



