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Scampi (Giant Prawn) Farming in Ludhiana: Sowing to Selling

A hands-on guide for scampi (Macrobrachium) farming around Ludhiana covering pond preparation, seed stocking, feeding schedules, water management, harvest timing and sensible marketing.

Ranjeet Natarajan
Ranjeet Natarajan August 9, 2026 5 min read 1,036 words
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Scampi (Giant Prawn) Farming in Ludhiana: Sowing to Selling

Why scampi in Ludhiana?

Ludhiana and surrounding districts have the warm summers, dependable water sources and market access that suit small- to medium-scale scampi (giant prawn; Macrobrachium species) culture. You can grow scampi in existing earthen ponds, lined ponds or tanks. The crop fits well into crop-fish rotations or as a diversified enterprise for farmers near urban markets.

Site and pond preparation

Choose a site with easy access to clean water (tube well, canal or treated surface water) and transport to Ludhiana markets. Key pond features:

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  • Depth: 0.9–1.5 m is practical for ponds; tanks can be shallower if aerated.
  • Pond type: earthen ponds with good bottom slope for drainage; HDPE-lined ponds or cement tanks for higher biosecurity.
  • Perimeter: fencing or netting reduces predation and theft; shade trees at a distance can help with temperature moderation.
  • Prepare pond bottom by drying, liming if acidic (apply agricultural lime based on soil test) and removing predators and weeds.

Water quality basics

Scampi tolerate a range of conditions but perform best within these general parameters. Monitor regularly—daily for temperature and dissolved oxygen (DO), weekly for pH and ammonia:

  • Temperature: 28–32°C is ideal; growth slows below ~20°C.
  • Dissolved oxygen: keep above 4 mg/L during daytime; provide aeration when stocking density is higher.
  • pH: 7.0–8.5; avoid sudden swings.
  • Ammonia and nitrite: keep as low as possible; toxicity increases with higher temperature and pH.
  • Salinity: most Macrobrachium strains used inland perform well in freshwater; some juvenile stages may benefit from low salinity acclimation depending on seed source.

Seed sourcing and acclimation

Buy post-larvae (PL) or juveniles from reputable hatcheries. Important points:

  • Inspect health and uniformity; avoid mixed species shipments.
  • Acclimate slowly: float the transport bags on the pond for 20–30 minutes and add small amounts of pond water over 30–60 minutes to equalize temperature and water chemistry.
  • Introduce at night or early morning to reduce stress and predation.

Stocking density and systems

Choose a system that matches your management intensity and resources.

  • Extensive (low input): low densities for minimal feeding—suitable for large earthen ponds with natural food.
  • Semi-intensive: moderate densities with supplemental feeding and periodic aeration. This is common for small farmers wishing reasonable yields with manageable inputs.
  • Intensive: high densities in tanks or lined ponds with continuous aeration and formulated feeds—requires more capital and tighter management.
  • Typical reference ranges: extensive a few individuals per m2; semi-intensive 8–12/m2; intensive systems can exceed 20/m2—choose according to your feed, aeration and biosecurity plan.

Feeding and nutrition

Good feeding is the single biggest factor in growth and production. Use a quality commercial prawn/pelleted feed appropriate for crustaceans. Practical feeding tips:

  • Feed rates: start higher as a percentage of biomass (e.g., several percent of estimated biomass) and reduce as prawns grow—monitor consumption and adjust. Typical feeding rates fall over time as biomass increases and feed conversion improves.
  • Feed frequency: 2–4 times per day for ponds; continuous or multiple small feeds in intensive systems reduces waste.
  • Use feed trays in ponds to reduce loss and to monitor consumption.
  • Supplement natural productivity by fertilizing ponds (if practicing semi-intensive) to encourage plankton and benthic foods, but avoid over-fertilization that leads to oxygen crashes.

Disease prevention and husbandry

Preventive husbandry is far cheaper and more effective than treating outbreaks:

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  • Start with disease-free seed from certified hatcheries where possible.
  • Maintain stable water quality; avoid sudden temperature, pH or DO changes.
  • Remove dead or moribund animals daily to limit spread of pathogens.
  • Provide shelters—nets, bamboo, brush or artificial structures—so juveniles can hide; this reduces cannibalism and stress.
  • Quarantine new batches if adding mid-cycle to an existing pond.
  • Use probiotics and biofilters in intensive systems as a preventive tool; follow supplier instructions and local extension advice.

Growth timeline and sampling

Growth depends on temperature, feed and stocking. Typical grow-out times for reach marketable sizes are several months:

  • Regularly sample by netting to estimate average weight and size distribution—this guides feeding and harvest decisions.
  • Adjust stocking and harvest windows based on demand—smaller sizes sell faster at some markets, while others demand larger prawns.

Harvesting and post-harvest handling

Plan harvest to match market demand and to minimise stress that reduces product quality:

  • Partial harvest is common—harvest the biggest animals first and allow remaining stock to grow longer.
  • Use seines, baited traps or nets with care to avoid crushing animals.
  • After harvest, keep prawns cool and shaded. Short-term live transport requires oxygenated water; for quick local sale place in clean, oxygenated containers.
  • For fresh chilled product, ice promptly and drain melt water; for longer storage, freezing is necessary.

Marketing and selling around Ludhiana

Ludhiana’s urban markets and restaurants create steady demand. Practical selling routes:

  • Local wholesale markets and fishmongers: sell live or chilled prawns to retailers and shops in Ludhiana.
  • Restaurants and hotels: establish direct supply links; consistent size and quality matters more than low price.
  • Processors: if you can meet volume and quality, processors buy for freezing and value-added products.
  • Value addition: grading, icing, vacuum-packing or partial processing can increase returns if you have the equipment and cold chain.
  • Documentation: keep records of batches, seed source, feed and any treatments—buyers increasingly ask for traceability and freshness assurances.

Economics and risk management

Start small and scale with experience. Key risks are water quality failures, disease outbreaks and market price swings. Mitigation steps:

  • Maintain a contingency water/oxygen supply and an emergency aerator.
  • Have biosecurity measures—footbaths, controlled introductions, and simple disinfection routines.
  • Diversify sales channels and consider staggered stocking/harvest to avoid putting all produce on the market at once.

Final practical checklist

  • Test pond soil and water before starting; lime if needed and correct pH.
  • Source healthy PL/juveniles from trusted hatcheries and quarantine before stocking.
  • Install aeration if stocking above extensive densities.
  • Monitor DO and temperature daily; sample for ammonia and nitrite weekly.
  • Feed based on measured consumption; use trays and sample to estimate biomass.
  • Plan harvests to match buyer requirements; keep post-harvest handling rapid and cool.

Scampi farming near Ludhiana can be a profitable diversification when you match stocking density, feeding, water management and market planning to your available labour and capital. Start with one pond or tank, learn the local rhythms, and expand cautiously as you gain control over water quality and disease risks.

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Ranjeet Natarajan
Ranjeet Natarajan

Contributing writer at Agriculture Novel — telling the stories that sustain us.

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