Abstract
Despite presence of anticoccidial drugs and vaccines in the market, coccidiosis continues to result in substantial economic losses to the poultry industry. There is wide-spread resistance to already known anticoccidial drugs. It is an infectious disease of poultry and rigorous management is required during vaccination. In addition there is possibility of drug residues in meat and other byproducts of such treated animals and consequently makes more imperative to explore and understand the role of natural products in livestock parasite management. Therefore a study was designed to evaluate the anticoccidial activity of aqueous extract of Ganoderma applanatum in broilerchicken. In-vivo anticoccidial activity of aqueous extract of G. applanatum was measured in comparison to the reference drug amprolium on the basis of oocysts per gram of faeces, weight gain and feed conversion ratio. Oocyst output was measured with the help of Mc-Masters counting technique. The results of this study established the virulence of coccidian oocysts and the effectiveness of both amprolium and aqueous extract of G. applanatum against coccidian oocysts, confirmed by the fact that treatment with aqueous extract of G. applanatum resulted in a noticeable reduction in coccidian oocysts output, leading to improved weight gain and better feed conversion ratio. The study highlighted the potential of G. applanatum as a natural source of bioactive components for controlling a protozoan parasite, which can be isolated and tested in a bioassay-guided manner and harnessed in the form of anticoccidial drugs.
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