EFFICACY OF TETRACHLORVINPHOS-IMPREGNATED CATTLE EAR-TAGS AGAINST LIVESTOCK DIPTERA IN SOUTHERN QUEBEC

1982 ◽  
Vol 62 (4) ◽  
pp. 1249-1252 ◽  
Author(s):  
DAVID J. LEWIS ◽  
ELLIOT BLOCK

Tagging of pastured cattle with one tetrachlorvinphos-impregnated (13.7%) ear-tag per animal resulted in an average 95.9% reduction of horn flies over a 14-wk period. A reduction in the numbers of face flies (84.3%), house flies (65.9%), and stable flies (60.3%) was also achieved. Key words: Tetrachlorvinphos, ear-tags, cattle, Diptera

1974 ◽  
Vol 67 (3) ◽  
pp. 384-386 ◽  
Author(s):  
R. L. Harris ◽  
W. F. Chamberlain ◽  
E. D. Frazar

1994 ◽  
Vol 19 (1) ◽  
pp. 366-366
Author(s):  
R. W. Miller

Abstract Three herds (36-122 head per herd) of Angus cattle (cow-calf or yearling heifers) located at the Wye Research and Education Center, Queenstown, MD, were tagged with one of three ear tag formulations. On 17 May one of the herds was tagged with Optimizer tags (2 per head) and on 2 Jun the other 2 herds were tagged with Python tags (2 per head) or experimental YT-615 tags (1 per head). A herd of mixed-breed beef cattle located approximately 4 km from the treated cattle served as an untreated control. Fly density was determined by making biweekly counts on 15 cattle in each of the herds. Counts were made ol face flies/face, horn flies/animal, and stable flies/4 legs. Two (Optimizer herd) or 3 (other 2 herds) pretreatment and 11 or 10 posttreatment counts were made.


2002 ◽  
Author(s):  
Justin Talley ◽  
Greta Schuster ◽  
David Parker ◽  
Bill Clymer ◽  
Carl Patrick

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