Duck-Specific Health Protocol

The Big Two Viral Threats

Ducks are resistant to Newcastle Disease (the big chicken killer), but they have their own specific enemies. As an agripreneur, you must know these signs because there is no cure once a bird is infected – only prevention.

1. Duck Plague (Duck Virus Enteritis)

This is the most feared disease in duck farming. It is highly contagious and can kill up to 90% of your flock.

Signs: Ducks will look sluggish, have ruffled feathers, and most distinctively will have a “watery” discharge from the eyes that turns into a crust. They will develop a severe thirst but will be too weak to stand.
The Cause: Usually introduced by wild water birds or contaminated pond water.
Prevention: Vaccination. If you are in a “high-risk” area (near lakes, large rivers, or other duck farms), a Duck Plague vaccine at 8–12 weeks is a critical investment.

2. Duck Viral Hepatitis (DVH)

This targets the “babies.” It is a fast-moving killer of ducklings under 3 weeks old.

Signs: Ducklings will suddenly fall over on their sides and kick their legs in a “paddling” motion (spasms) before dying. This happens so fast that a duckling can look healthy in the morning and be dead by noon.
Prevention: This is why sourcing from a quality hatchery is vital. Breeders vaccinate the “mother ducks” so they pass immunity to the ducklings through the egg.

The Hidden Profit Eater: Internal Parasites

Because ducks are foragers and love wet mud, they are magnets for worms. A duck with worms isn’t a dead duck, but it is a “thieving” duck – it will eat your expensive feed, but the worms will take the nutrients, and the duck will not put on weight.

The 3-Month Deworming Cycle: You must deworm your ducks every 90 days.
Local Solution: Use broad-spectrum poultry dewormers (like Levamisole or Piperazine) available in most local Agrovets. These are usually powders or liquids added to the drinking water for one day.
External Parasites: Keep an eye out for Lice and Mites under the wings. While less common than in chickens, they can cause “feather picking” and stress. A simple dusting with “Carbaryl” powder or similar poultry dust once every few months keeps them clean.

The Duck Health Calendar (The Pro Schedule)

Use this simple checklist to keep your flock on track:

Age / Frequency	Action Required	Reason
Day 1–3	Glucose + Multivitamins	Stress recovery from transport.
Day 14	Booster Vitamins (Niacin focus)	Prevent “bowed legs” during rapid growth.
Week 8–12	Duck Plague Vaccine	Long-term protection for breeders/layers.
Every 3 Months	Deworming	Maintain feed conversion and weight gain.
Daily	Water Scrubbing	Prevent “Slimy Water” (Algae/Bacteria).

Biosecurity: The Gatekeeper Strategy

Biosecurity sounds like a demanding process, but it just means “keeping germs away.”

The Foot-Bath: Place a small basin with a disinfectant (like Jik/Bleach or specialized poultry disinfectant) at the entrance of your duck house. Anyone entering must step in it.
Wild Bird Control: If you use open-air ponds, try to fence them so wild ducks/geese can’t mingle with yours. Wild birds are “flying suitcases” of disease.
The Last-to-First Rule: Always visit your youngest, healthiest birds first. Visit the sick or older birds last. This prevents you from carrying germs from the “oldies” to the fragile ducklings on your boots.

Case Study: The Wormy Loss in Thika

A farmer in Thika was frustrated. His Pekin ducks were 12 weeks old but only weighed 1.8kg. He was feeding them high-quality pellets, but they looked “bony.”

The Diagnosis: A vet check revealed a massive infestation of roundworms.
The Cost: He had spent an extra 4 weeks feeding birds that weren’t growing. That “wasted” feed cost him roughly Ksh 15,000.
The Fix: He spent Ksh 800 on a dewormer. Within two weeks, the birds’ appetites changed, and they finally began to “fill out.” He now deworms every 3 months religiously.

Important Things to Keep in Mind

Dead Birds: Never throw a dead duck into the bush or a river. This spreads disease to your neighbors and wild life. Burn or bury dead birds in a deep pit with a layer of lime.
The Eye-Check: Make it a habit to look at your ducks’ eyes every morning. A “clear, bright eye” means a healthy duck. A “bubbles in the corner of the eye” look is the first sign of respiratory stress or poor water hygiene.
Antibiotic Warning: Do not “blindly” give ducks antibiotics every week. This makes the bacteria stronger (resistance) and makes the meat unsafe for humans to eat. Only use antibiotics when a vet confirms a bacterial infection.