278 A TICK-RESISTANT CONDITION IN CATTLE. 



lieadquai'ters, and day b}- day f>bsei\'ation would be required, 

 I can do nothing in the matter. If on the other hand you 

 desire costless action arrangements can be made for removal 

 of the three cattle to a centre for daily examination. Mr. 

 Birley"s claim is identical with the claims of Mr. Munro 

 Hull." 



Mr. Stanton, of Tingalpa, reported that three mixed 

 Shorthorn Jersey cows belonging to his herd were tick-free 

 whereas the remainder became infested. The former were 

 smooth, clean-skinned animals. No sign or exudation was 

 noticed. 



Mr. James Woodward, of Terror's Creek, via Petrie, 

 in a letter dated October 28th, 1918, related his experience 

 of a tick resistant cow. This animal became crippled during 

 the drought in 1915, and although heavily infested could 

 not be treated for ticks except by hand-picking. Though 

 previously a very ticky beast this cow is now strongly 

 resistant to tick infestation. This animal is a grade Jersey 

 with short fine hair ; she has been in good condition since 

 the drought and running on fairly dry forest and scrub 

 country. Mr. Woodward considers that many animals 

 could be rendered so resistant if not dipped for from twleve 

 to eighteen months but that such a method is impracticable 

 owing to the excessive tick worry to which the animals 

 would be subjected. 



On 27th Ma}', 1918, a visit was made to Barrett's 

 <lairy, KaAvlin"s Street, Kangaroo Point, Brisbane, where we 

 examined a red roan cow which, it was stated, never carried 

 ticks. This cow was the onh' survivor of a number of 

 calves turned out at Lytton about 13 years ago, the 

 remainder djing of redwater. Exudate had never been 

 noticed by any members of the family' that Avere inter- 

 viewed, though Ave were informed that an elder brother 

 had seen vesicles on this animal. 



Effect of Breed ok Resistance. 

 it has been a well knoAvn fact in America for many 

 years, that l-<rahmin or crossbred Brahmin cattle shew very 

 higli lick-resisting properties. It was thoixght that these 

 cattle were immune to tick fever l>ut this was later proved 

 to be incorrect, shewing that larval ticks must infest the 



