To give Corid to chickens, mix the recommended dose of Corid powder in their drinking water for 5-7 days to treat coccidiosis effectively.
Corid (amprolium) is the most effective treatment for coccidiosis in chickens. This parasitic disease can kill young birds within days if left untreated. Learn the proper dosing, administration methods, and prevention strategies to keep your flock healthy.
Understanding Coccidiosis in Chickens
Coccidiosis is caused by protozoan parasites (Eimeria spp.) that attack a chicken’s intestinal lining. The disease spreads through contaminated feces and is especially dangerous for chicks under 12 weeks old. Adult chickens often develop immunity after exposure.
Symptoms to Watch For
- Bloody or watery diarrhea
- Pale combs and wattles
- Ruffled feathers
- Lethargy and weakness
- Reduced appetite
- Weight loss
If you notice these signs, act quickly. Coccidiosis can kill young birds in 48-72 hours. For more on chicken health issues, see our article on why chickens die suddenly.
Corid Dosage and Administration
Corid comes in liquid (9.6% solution) and powder (20%) forms. Always follow label instructions exactly.
Water Treatment Method
| Severity | Dosage | Duration |
|---|---|---|
| Severe outbreak | 2 tsp per gallon | 5-7 days |
| Moderate outbreak | 1 tsp per gallon | 5-7 days |
| Prevention | 0.5 tsp per gallon | 21 days |
Make fresh medicated water daily. Remove all other water sources during treatment. After initial treatment, continue with half dose for another week to prevent relapse.
Oral Drench Method
For critical cases, give Corid directly into the beak:
- Liquid form: 0.1 ml per pound body weight
- Powder form: Mix 1/2 tsp powder with 2 tsp water, then give 0.34 ml per pound
Administer orally 1-2 times daily for 1-3 days. Learn proper technique in our guide on handling chickens safely.
Important Treatment Notes
During Treatment
- Do NOT give vitamins – Corid works by blocking thiamine
- Continue normal feed
- Isolate sick birds if possible
- Clean and disinfect coop thoroughly
After Treatment
- Wait 24 hours before slaughter (meat birds)
- No egg withdrawal needed
- Provide vitamin supplements for 3-4 days
- Use probiotics to restore gut health
Preventing Future Outbreaks
According to Merck Veterinary Manual, prevention is key:
- Keep bedding dry – change weekly
- Use nipple waterers to reduce contamination
- Rotate pasture areas for free-range birds
- Consider medicated starter feed for chicks
- Quarantine new birds for 2 weeks
Some keepers add apple cider vinegar (1 tbsp/gal) or garlic to water as natural preventatives. While not scientifically proven, many swear by these methods. The Poultry DVM recommends proper sanitation as the best prevention.
When to Call a Vet
Seek professional help if:
- Birds don’t improve in 2 days
- Multiple deaths occur
- You suspect other illnesses
- Flock shows neurological symptoms
Remember that other diseases can mimic coccidiosis. Proper diagnosis ensures correct treatment. With prompt Corid administration and good management, most flocks recover fully from coccidiosis outbreaks.