Deworming and Worm Control

Why worms matter more than farmers think

Worms rarely announce themselves. Long before a goat looks sick, a worm burden is taking the nutrition you paid for and damaging the gut lining so less of the rest is absorbed. The result is a herd that eats normally and grows slowly, and a farmer who buys more feed to fix it. Nepal's humidity, especially through the monsoon, makes conditions ideal for worms.

Checking the eyelid (FAMACHA method)

The most damaging worm in warm, humid areas is a blood-feeding stomach worm, so the damage shows up as anaemia — and anaemia is visible in the membrane inside the lower eyelid. This check takes seconds, needs no equipment, and tells you which animals need treating.

1. 1

   Hold the goat's head steady

   Standing beside it, one hand under the jaw.

2. 2

   Gently push the lower eyelid down

   Use your thumb to expose the membrane inside. Do not press on the eye itself.

3. 3

   Look at the colour

   Bright red or deep pink is healthy. Pale pink means treat. Almost white means treat urgently — this animal is in danger.

4. 4

   Record it

   Note which animals were pale. Repeat monthly and you will see patterns.

Deworm selectively, not blindly

Treating every goat every time seems thorough, but it is how drug-resistant worms are created — the only worms that survive are the ones the drug cannot kill, and soon those are the only worms you have. Once a dewormer stops working on your farm, it does not start working again.

• •Treat the animals that show anaemia or poor growth, not the entire herd on a fixed date.
• •Dose by actual body weight. Under-dosing is a major driver of resistance — guessing weight usually means under-dosing.
• •Do not rotate products every single time. Use one until it stops working well, then change class.
• •Ask your vet or agrovet which dewormer classes still work in your district; resistance patterns are local.
• •Deworm new arrivals during quarantine, before they reach your pasture.

Reduce the worms in the environment

Deworming treats the goat. Pasture and shed management reduces how many worms it picks up in the first place — which is the part that actually lasts.

• Feed from raised troughs or racks, never off the floor where dung lands.
• Keep bedding dry — worm larvae need moisture to survive.
• Avoid grazing very short grass; larvae concentrate near ground level.
• Graze in the middle of a dry day rather than early morning when dew keeps larvae active on leaves.
• Rest and rotate grazing areas where you can.
• Clean water troughs regularly and keep them clear of dung.
• Pay extra attention through the monsoon, when burdens rise fastest.

Coccidiosis is a different problem

Coccidiosis mainly affects kids and causes watery, sometimes bloody diarrhoea. It is caused by a different parasite and ordinary dewormers do not treat it — it needs specific anti-coccidial medication from a vet. Dry bedding and raised feeders are the main prevention.

External parasites

Ticks, lice and mites cause scratching, hair loss and, in heavy infestations, anaemia of their own. Treat the animals and the shed at the same time — treating only the goats leaves the bedding to reinfest them within days.