1Department of Veterinary Pharmacology and Toxicology, Dr G.C. Negi College of Veterinary and Animal Sciences, Chaudhary Sarvan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, Himachal Pradesh
2Department of Veterinary Medicine, Dr G.C. Negi College of Veterinary and Animal Sciences, Chaudhary Sarvan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, Himachal Pradesh
3Department of Livestock Production Management, Dr G.C. Negi College of Veterinary and Animal Sciences, Chaudhary Sarvan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, Himachal Pradesh
Department of Veterinary Parasitology, Dr G.C. Negi College of Veterinary and Animal Sciences, Chaudhary Sarvan Kumar Himachal Pradesh Krishi Vishvavidyalaya, Palampur-176 062, Himachal Pradesh
*E-mail address: devinasharma23@yahoo.co.in
Online published on 3 September, 2024.
To evaluate the insecticidal activity of essential oil (EO) of wild marigold (Tagetes minuta L) against goat lice Damalinia caprae, in vitro bioassays viz., filter paper contact and vapour phase toxicity bioassays were used. Filter paper contact showed 96.66% efficacy of EO against D. caprae at 20% concentration. The LC50 (CI) and LC95 (CI) values of 3.60 (3.32 to 4.90) and 15.48 (13.15 to 18.21), respectively showed 81% goodness of fit. Vapour phase toxicity showed 100% efficacy of EO against D. caprae at 20% concentration. The LC50 (CI) and LC95 (CI) values of 3.32 (2.32 to 3.53) and 10.21 (9.01 to 11.55) showed 93% goodness of fit. Low lethal time (LT50) values of 2.00±1.53 min showed high fumigant toxicity of EO. Essential oil of T. minuta was found to be effective in controlling lice infestation in goats.
Damalinia caprae, Essential oil, Gaddi goat, In vitro bioassay, Tagetes minuta
