Effect of different concentrations of three kinds of gliricidia (Gliricidia sepium) leaves extracts on the hatchability of Haematopinus tuberculatus (Carabao Lousse) eggs

Date

6-2016

Degree

Doctor of Veterinary Medicine

College

College of Veterinary Medicine (CVM)

Adviser/Committee Chair

Billy P. Divina

Abstract

In the Philippines, carabao (Bubalus bubalis) raisers control Haematopinus tuberculatus and its eggs by either shaving the hair of their animals or insecticide application. Commercial insecticide products usually do not have claim on ovicidal activity. Louse eggs are thought to be less susceptible to insecticides. This study determined the efficacy of three gliricidia leaves extracts and their varying concentrations on the hatchability of H. tuberculatus eggs. Louse eggs from an infested carabao bull were collected and examined microscopically for shell integrity. There were six treatments namely, untreated control, distilled water, 50% amitraz solution, and aqueous infusion, decoction and 80% ethanolic extract of fresh gliricidia leaves with concentrations of 15%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100%. Louse eggs were incubated for up to 15 days at 37+ 1.5 °C and relative humidity of 55-70%. Results showed that gliricidia leaves extracts in the form of decoction, infusion and 80% ethanolic extract were highly effective in reducing the hatchability of the eggs. Further, 30-100% concentrations of the three extracts did not significantly differ with amitraz in their efficacy.

Language

English

Location

UPLB College of Veterinary Medicine (CVM)

Call Number

LG 993.5 2016 V4 R67

Document Type

Thesis

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