Study of acariasis in cattle and ticks resistance against cypermethrin in al-Najaf province

الملخص EN

The present study was carried out at September 2010 to evaluated tick infestation of cattle in Al-Najaf province with diagnosis of cypermethrin resistance by using FAO larval packet test and modified larval packet test.

The result showed that the infestation rate of acariasis was 54.34 %.

The identification of ticks revealed that 55.06 % of collected ticks were Hayaloma spp., while the percentage of Boophilus spp.

and Rhipicephalus spp.

Were 31.86 % and 13.08 % respectively.

According to site of infestation, the highest percentage was recorded in udder 45 %, followed by perineal region 25 %, head–neck 18 % and others 7 %.

The LPT results showed there was no significant variation (P ≤ 0.01) between the mortality rates of Boophilus (96.42 %) and Hyaloma (96.72 %) at recommended dose.

In other hand, the MLPT method showed that the mortality rate of Boophilus larvae at recommended and double recommended doses were 94.82 % and 98.04% respectively, while all the Hyaloma larvae were killed at the recommended dose.