Common Parasites 



15 



Disposal of Arsenical Solution. 



When the solution becomes foul from manure and dirt carried 

 into it by cattle it should be renewed. 



Probably the best method of disposing of old solution is to run 

 it into a deep pit protected by fences and located so that it is not 

 possible for the solution to run onto pasture land or gain access to 

 the water supply. 



Xote. The rules and Regulations of the State Veterinarian of 

 Georgia prohibit the transportation companies from accepting for 

 shipment any cattle infested with ticks. 



FLIES. 



Horn Fly (Hematobia serrata). This is a small black fly about 

 one-half the size of the common house fly. It appears with the ad- 

 vent of warm weather and disappears with the coming of frost in 

 the fall. It is a blood sucking fly. The female deposits her eggs 

 in fresh manure and these hatch in about twenty-four hours into 

 larvae. After a short period of growth in the manure the larvae 

 burrow into the ground from which they emerge in a few days as 

 fully developed adults. They attack cattle in swarms, alighting 

 upon the backs and bellies, and commonly accumulate in great 

 numbers at the base of the horns. Their presence seriously annoys 

 the cattle and interferes with grazing. Loss is caused through the 

 falling off in flesh and the lessening of the milk flow. 



Bot Fly (Warble fly), (Hypoderma liniata), (Grub fly). The 

 Bot Fly is a very common parasite of cattle in Georgia. The ma- 

 ture fly is about the size of a honey 

 bee and its body is black and cov- 

 ered with short fine hair. 



The female deposits her eggs in 

 the region of the heels of cattle, 

 cementing them to the hair of 

 that part. The eggs hatch and the 

 young flies, in the form of very 

 small maggots or worms, crawl 

 upon the skin of the animal caus- 

 ing a tickling sensation. The in- 

 fested animal licks the skin and 

 transfers some of the larvae to the 

 mouth. They are swallowed with 

 food and some of them attach 

 themselves to the lining of the 

 oesphagus and stomach. From 

 these locations they migrate 

 through the flesh to the location 

 beneath the skin of the back where they are commonly seen during 

 the winter months. The presence of a larvae or grub is marked 



FIG. 13. The ox bot or heel ffy 

 (Hypoderma Uneata) : Adult. En- 

 larged. (From Insect Life.) 



