Efficacy of fluralaner in drinking water in controlling mite and improving welfare in laying hens

The objective of the experiment was to evaluate the effectiveness of

Exzolt (contaning fluralaner) to control mite and improve behavior

relating to welfare in layers. Monitoring and recording indicators of

livestock productivity, level of mite infection, number of eggs with

red dots, and behavior of hens before and after using Exzolt were

performed. 4 cameras to monitor hens’ behavior from 18 pm of

the previous night to 6 am of the following morning were installed

to record the layer’s behavioral indicators caused by the mite

including number of shakes, wing flaps, scratches, preening, bites,

pecking (aggressive), before and after using Exzolt. As a result,

the studied farm was heavily infected with mites with an average

infection level of 1.79 on a scale of 0 - 2. After the treatment with

Exzolt, the farm became totally free of the mites in layers for

many weeks thereafter. The use of Exzolt did not affect daily feed

intake, mortality. The proportion of eggs with red spots decreased

significantly. Especially, the layer’s behavioral expression causing

annoying was significantly reduced after using Exzolt. This is the

reason for good recommendation to use this product to control

mite for layer farm.