THE EFFECT OF IVERMECTIN POUR-ON ADMINISTRATION AGAINST NATURAL OSTERTAGIA OSTERTAGI INFESTATIONS AND PREVALENCE RATE OF THAT IN CATTLE
Garedaghi Yagoob*, Khayatnouri Mirhadi
ABSTRACT
These days one of the real problems that cause the prejudice economic
in animal farms yearly is parasitic diseases. For that reason to prevent
these problems the use of antiparasitic drugs is necessary. Ivermectin is
a broad spectrum antiparasitic agent and different dosage forms such as
injection, oral and pour-on used. The aims of this study was evaluation
of the efficacy of ivermectin pour-on administration against natural
Ostertagia ostertagi nematode infections in cattle and also determine
the prevalence rate of this parasite in Tabriz area. In this study in 120
heads of male and female hybrid cattle were carried out LPG (Larva
per gram of feces) feces test. Willis method was applied for feces test
and Stoll method was used for counting nematode eggs and larves
(LPG). After confirm worm contamination and counting Ostertagia
ostertagi nematode egg in feces, in infected animals, ivermectin (0.5 mg/kg) pour-on was
administered. Feces test was repeated in 1, 7, 21 and 28 day after treatment. Results showed
that total prevalence of Ostertagia ostertagi nematode infections was 13.33% in cattleās of
Tabriz area. The effects of ivermectin pour-on on Ostertagia ostertagi nematode were 47.15,
70.46, 92.74 and 99.74% in 1, 7, 21 and 28 day respectively. In conclusion, because the effect
of this drug against Ostertagia ostertagi nematode was >99% (p<0.05), so in cattle can use
this drug in antiparasitic program. Of course the effect of this drug on other nematodes and
parasitic infections are needed to be more investigated.
Keywords: Ivermectin, Pour-on Administration, Ostertagia Ostertagi, Cattle.
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