Efficacy of dicyclanil in the prevention of screwworm infestation (Cochliomyia hominivorax) in cattle castration wounds.
Vet Parasitol
; 76(3): 229-32, 1998 Apr 15.
Article
in En
| MEDLINE
| ID: mdl-9615956
ABSTRACT
A field trial was carried out during summer 1996 in a commercial beef cattle farm located in the central area of Argentina (30 degrees 16'S, 60 degrees 30'W) to evaluate the efficacy of a new insect growth regulator material (dicyclanil) in the prevention of myiosis caused by screwworm (Cochliomyia hominivorax) larvae. Forty bull calves (Bos indicus x Bos taurus), 5 to 6 months old were allocated by ranked paris to a control (G.1) and a treated group (G.2) of the same number of animals. On day 0, all experimental animals were surgically castrated and calves of group 2 were treated topically with 20 ml as a single dose of a ready-to-use formulation containing 5% w/v dicyclanil. Inspections for screwworm larva infestation were carried out on days 4, 8, 12, 16, 19, 23 and 25 after castration. The incidence of egg masses on the scrotal wounds evidenced a similar challenge for all groups (P > 0.05 chi(2)). However, 16 animals of G.1 (80%) and only one of G.2 (5%) developed active myiosis, respectively. This difference was significant (P=0.003 X(2)).
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Screw Worm Infection
/
Surgical Wound Infection
/
Orchiectomy
/
Cattle Diseases
/
Juvenile Hormones
Limits:
Animals
Country/Region as subject:
America do sul
/
Argentina
Language:
En
Journal:
Vet Parasitol
Year:
1998
Type:
Article
Affiliation country:
Argentina