Various natural acaricides used in animal husbandary practices and their importance in livestock industry
Tanvi Gupta1 , Keshav1 , Dr. Yash Bhargava2
14th Year Student, R.P.S. College of Veterinary Sciences, Balana, Mahendragarh
2Assistant Professor, R.P.S. College of Veterinary Sciences, Balana, Mahendragarh
Corresponding author’s mail :- yashbhargava94@gmail.com
Abstract
Livestock is a cornerstone of agricultural economies worldwide, especially in India, providing milk, meat, wool, hide, and critical income for millions of rural households. However, the productivity and profitability of this sector face significant threats from ectoparasites, especially ticks and mites. These pests inflict substantial economic losses through blood loss, irritation, transmission of diseases, reduced growth, decreased milk and meat yield, and even mortality. Traditionally, chemical acaricides have been widely employed to control these pests. Yet, their extensive and sometimes injudicious use has led to several challenges, including environmental contamination, chemical residues in food products, and—most alarmingly—resistance in tick populations.
The need for sustainable, effective, and eco-friendly tick control solutions has, therefore, become urgent. This has paved the way for the exploration and adoption of natural acaricides—agents derived from plant extracts, essential oils, and bioactive phytochemicals—as alternatives or complements to synthetic chemicals. This article explores the various types of natural acaricides used in animal husbandry, the scientific basis for their efficacy, their importance for the livestock industry, and their current status and prospects in India.
The Threat of Ticks and the Role of Acaricides
Ticks (Ixodidae and Argasidae) are among the most harmful ectoparasites affecting livestock in India and globally, not only due to their voracious blood-feeding but also because they are vectors for several diseases (babesiosis, anaplasmosis, theileriosis, etc.). The economic loss in India due to ticks and tick-borne diseases is estimated to be thousands of crores of rupees annually. The traditional tick control strategy has revolved around the external application of synthetic acaricides (organophosphates, carbamates, pyrethroids, formamidines, and amidines). While effective initially, decades of repeated use have led to widespread resistance in several tick species across India—including Rhipicephalus (Boophilus) microplus and Hyalomma anatolicum.
Limitations of Synthetic Acaricides
- Resistance development:Resistance can occur in as little as 5–10 years after a new acaricide is introduced.
- Environmental impact:Runoff and residues pollute soil, water, and can enter the food chain.
- Food safety:Residues in milk and meat threaten consumer safety and limit export potential.
- Non-target toxicity:Chemicals can adversely affect beneficial insects, wildlife, and human handlers.
Different plants alongwith their mechanism and method of application are depicted in the table given below:–
| Compound/Plant | Mechanism/Efficacy | Application | Plant picture |
| Neem (Azadirachta indica) | Contains azadirachtin; high larval/adult tick mortality (up to 95% at certain concentrations); disrupts oocyte development | Sprays, oils, leaf extracts |  |
| Nagod (Vitex negundo) | Repellent and toxic effects on ticks; incorporated in polyherbal formulations | Herbal formulations |  |
| Ageratum conyzoides | Potent acaricidal phytochemicals; 87% tick mortality; inhibits oviposition | Powder, extract |  |
| Curcuma longa (Turmeric) | Essential oil shows toxicity to Rhipicephalus annulatus; eco-friendly | Essential oil application |  |
| Cymbopogon spp. (Lemongrass) | Essential oils act as repellents and acaricides; reported efficacy against multiple species | Essential oil, topical |  |
| Juniperus spp. (Junipers) | Terpenoids inhibit acetylcholinesterase; suggested anti-tick activity | Feed supplement, oils |  |
| Polyherbal/phyto-mineral blends | Developed by Indian Veterinary Research Institute (ICAR-IVRI); multiple plant/mineral actives; effective against resistant ticks; stable and safe | Commercial products |
Natural Acaricides: An Emerging Solution
Natural acaricides are bioactive compounds extracted from plants, herbs, and sometimes microbial sources. They may be applied topically, used as feed supplements, or formulated into sprays, washes, and powders. Their action can range from direct toxicity to ticks and inhibition of feeding to disruption of reproduction and repellency. The primary advantage is their environmental safety, lower risk of resistance development (due to multiple active compounds), and lack of harmful residues in livestock products.
Key Groups and Sources of Natural Acaricides
Plant Families with Acaricidal Potential
- Asteraceae(e.g., pyrethrins from Chrysanthemum cinerariifolium): Major sources of sesquiterpenes, which have toxin or feeding deterrent properties.
- Euphorbiaceae, Fabaceae, Lamiaceae, Solanaceae, Meliaceae, Rutaceae, and others: These families contribute alkaloids, flavonoids, coumarins, terpenoids, saponins, and other bioactives with proven or potential acaricidal effects.
Examples of Prominent Natural Acaricides
Scientific Evidence and Mechanisms of Action
Efficacy Data
- Neem-based products:In laboratory (Larval Packet Test) and field studies, neem leaf extract and azadirachtin caused mortalities of 80–95% in tick larvae at low concentrations. Higher concentrations did not show improved effects, indicating optimal dosages exist and should be maintained.
- Ageratum conyzoides:In a cattle trial, the ACF6 formulation achieved over 80% mortality within 96 hrs, with significant inhibition of tick oviposition and no adverse effects in safety studies on rats.
- Polyherbal blends (ICAR):Newly developed Indian polyherbomineral formulations are effective against even acaricide-resistant tick populations, stable under varied temperatures, and leave no detectable residues in milk or meat.
- Curcuma longa essential oil:Demonstrated in vitro efficacy against resistant tick populations, representing further diversification of botanical acaricides.
- Cymbopogon citratus, lemongrass:Essential oil extracts have been shown to reduce tick load significantly; formulations in trials have shown parity with some synthetic compounds.
Modes of Action
Natural acaricides act through:
- Inhibition of feeding (antifeedant effects)
- Disruption of neural or hormonal pathways (e.g., acetylcholinesterase inhibition by terpenoids)
- Direct cytotoxicity to tick cuticle/epithelium and reproductive organs
- Oviposition inhibition and fecundity reduction
- Repellency (deterring tick attachment)
Importance in the Livestock Industry
Current Challenges in India
- Economic loss: Ticks and tick-borne diseases reduce overall production (milk, meat, hides), increase veterinary costs, and result in culling or animal death.
- Chemical resistance: Resistance to all major synthetic acaricide classes has been documented in tick populations from Haryana, Andhra Pradesh, Tamil Nadu, and other states.
- Farmers’ profitability and sustainability: The cost of chemical acaricides, risk of residues and subsequent loss of exports, and adverse public health/environmental impact undermine livestock-based livelihoods.
Role of Natural Acaricides
- Eco-friendly and sustainable: Plant-based solutions are biodegradable, with low environmental impact and low risk of resistance development.
- Food safety and exports: The absence of harmful residues in milk and meat enhances acceptability in global markets.
- Support to organic livestock farming: Vital for certified organic dairy/beef production, now an area of expanding demand in India and globally.
- Cost-effective and locally available: Most sources (neem, lemongrass, turmeric, etc.) are indigenous, widely grown or cultivable, and affordable for small-scale farmers.
Current Status and Development in India
Research and Development
- India ranks second worldwidein research output related to acaricidal plants, accounting for 17% of all global studies in this field.
- Multiple research institutions (notably, ICAR-IVRI) have developed, tested, and commercialized various polyherbal and phyto-mineral acaricides using standardized extraction and formulation technologies adhering to Good Laboratory Practice (GLP) and Good Manufacturing Practice (GMP) standards.
- Recent innovationsinclude stable, multi-target herbal-mineral formulations with remarkable efficacy even against resistant tick populations and proven field safety.
Adoption and Use
- Field-level adoption is increasing, especially among dairy cooperatives, progressive farmers, and in states with high tick burden (e.g., Kerala, Karnataka, Haryana).
- Government institutions and private players are promoting the use of such products as part of Integrated Pest Management (IPM) and organic livestock farming approaches.
- Awareness and training programs are facilitating knowledge transfer, but large-scale adoption still faces limitations due to market access, regulatory approvals, and consistency in product quality.
Constraints and Future Directions
- Standardization challenges: Efficacy can vary depending on plant species, extractant, concentration, tick species, and local climatic/ecological factors.
- Product registration/commercialization: Need for more rigorous, large-scale field validation and toxicological studies for wider regulatory approval and farmer confidence.
- Delivery systems: Innovation in application technologies (spray, pour-on, oral, feed additive) is needed for optimal efficacy, especially for semi-wild or extensive grazing systems.
- Market development and subsidy support: Further government support may help drive adoption, especially among poorer farmers.
Ticks and tick-borne diseases are a primary constraint to sustainable livestock productivity in India, a problem exacerbated by growing resistance to conventional synthetic acaricides. Natural acaricides, derived primarily from indigenous plants such as neem, nagod, lemongrass, turmeric, and Ageratum conyzoides, offer significant promise as safe, efficient, and eco-friendly alternatives. Research and field trials show substantial efficacy and safety, with leading institutions such as ICAR championing their development and dissemination.
However, challenges in standardization, large-scale adoption, and regulatory recognition must be addressed to unlock their full potential. The integrated use of these natural products, combined with improved livestock management practices and ongoing farmer education, offers the most sustainable pathway forward. Global trends and India’s own scientific progress suggest that natural acaricides will play a vital and expanding role in the future of Indian and global animal husbandry.
References:
- Ghosh S, et al. (2015). “Plant-based natural acaricides for control of livestock ticks in India.” Veterinary Parasitology, 200: 165–172.
- Singh NK, et al. (2012). “Acaricidal activity of Indian medicinal plants against Rhipicephalus microplus ticks.” Asian Pacific Journal of Tropical Medicine.
- ICAR-IVRI Reports on Herbal Acaricide Development (Various Years).
- FAO/WHO Reports on Acaricide Resistance.
- Rajput ZI, et al. (2006). “A review of the importance of ticks in cattle and strategies for their control.” Journal of Animal and Plant Sciences.
