Sheep Diseases and Care 2026 – Complete Guide for Quality Wool Production

1. PPR — Peste des Petits Ruminants (Goat Plague)

Type: Viral | Mortality: 30–90% in unvaccinated flocks | Wool Impact: High

PPR is the single most economically damaging disease for sheep and goat farmers in India. Caused by a Morbillivirus related to rinderpest, it spreads rapidly through direct contact. Symptoms include fever of 40–41°C, watery to purulent eye and nasal discharge, mouth ulcers, foul-smelling diarrhoea, and respiratory distress. Death occurs within 5–10 days from dehydration, pneumonia, and secondary infections.

Treatment: No specific antiviral exists. Supportive care — antibiotics for secondary infections and electrolyte therapy — can reduce mortality in valuable animals. Prevention through vaccination is the only effective strategy. The Government of India provides PPR vaccine free under the National PPR Control Programme (DAHD circular, January 2026). A single dose gives immunity for 3 years.

2. Sheep Pox (Variola Ovina)

Type: Viral | Mortality: 20–50% in lambs under 6 months | Wool Impact: Very High

Sheep pox is a highly contagious disease caused by Capripoxvirus. According to Tamil Nadu Agricultural University’s (TNAU) animal husbandry portal, it causes mortality of 20–50% in animals below 6 months and causes permanent damage to wool and skin in adult sheep. Symptoms include high fever, skin nodules progressing to pocks, pneumonia-like respiratory distress, and acute enteritis. The pock lesions leave scars that destroy wool follicles permanently in affected skin zones.

Treatment: No specific treatment. Isolate affected animals immediately. Vaccinate all healthy animals in the flock within 48 hours of an outbreak. Annual vaccination before the monsoon season is recommended in endemic zones.

3. Foot and Mouth Disease (FMD / Khurpaka-Munhpaka)

Type: Viral | Mortality: Low (adults); Higher in lambs | Wool Impact: Moderate (indirect)

FMD causes high fever (40–41°C), blisters in the mouth and between hooves, excessive salivation, and severe lameness. While mortality in adult sheep is usually low, the extreme pain prevents proper grazing. Nutrition deficiency then directly reduces wool fibre diameter consistency and staple length. Under India’s National Animal Disease Control Programme (NADCP), FMD vaccine is provided free of cost every 6 months. In January 2026, Uttar Pradesh launched a vaccination drive covering 6.98 lakh animals under the FMD-CP’s seventh round.

4. Blue Tongue Disease

Type: Viral (Orbivirus, vector-borne) | Mortality: 2–30% | Wool Impact: High

Blue tongue is endemic in India and primarily affects sheep. It is transmitted by Culicoides midges (biting insects), not by direct contact. Symptoms include fever, inflammation and ulceration of the lips and tongue (the tongue may appear blue due to cyanosis), coronitis (inflammation at the hoof-skin junction), and lameness. Pregnant ewes may abort, severely impacting flock productivity. No specific cure exists; supportive care and isolation are key. Contact the nearest Veterinary Assistant Surgeon for ring vaccination during outbreaks.

5. Enterotoxaemia (Pulpy Kidney Disease)

Type: Bacterial (Clostridium perfringens Type D) | Mortality: Very high (often sudden death) | Wool Impact: Indirect

Enterotoxaemia most commonly kills the best-conditioned, fastest-growing lambs — the very animals that would produce the highest quality wool. It occurs when sheep overeat grain or lush pasture, causing an overgrowth of Clostridium perfringens bacteria. Animals are often found dead without prior visible symptoms. Vaccination with Enterotoxaemia (ET) vaccine at 3–4 months with a booster 3–4 weeks later, then every 6–12 months, is the standard prevention protocol.

6. Internal Parasites — Barber’s Pole Worm and Liver Fluke

Type: Parasitic | Mortality: Significant if untreated | Wool Impact: Very High

Internal worm infestations are among the most common causes of poor wool quality in Indian sheep. Haemonchus contortus (barber’s pole worm) causes severe anaemia — visible as pale eyelids and gums — bottle jaw (fluid accumulation under the jaw), rapid weight loss, and weakness. Liver fluke (Fasciola hepatica) causes bottle jaw, poor body condition, and reduced wool yield. Treatment uses anthelmintic drugs (dewormers). Sheep must be dewormed every 6 months; in high-rainfall areas and during monsoon, quarterly deworming is recommended by ICAR-CSWRI.

7. External Parasites — Sheep Scab (Mange / Scabies) and Keds

Type: Parasitic (Ectoparasites) | Mortality: Low (but severe welfare issue) | Wool Impact: Very High

Sheep scab, caused by Psoroptes ovis mites feeding on the skin surface, is an extremely contagious disease. Symptoms include intense itching, thickened and scaly skin, scabs, and severe wool loss. Sheep keds (Melophagus ovinus, a wingless fly) cause intense itching, wool discolouration from ked droppings, and reduced wool quality. Both ectoparasites directly destroy fleece value. Treatment includes insecticidal dips or pour-on formulations containing ivermectin or cypermethrin. Shearing before dipping improves treatment efficacy significantly.

8. Flystrike (Myiasis / Bheater)

Type: Parasitic (Blowfly larvae) | Mortality: High if untreated | Wool Impact: Catastrophic in strike zone

Blowfly strike is a severe summer and monsoon-season threat, especially in flocks with unshorn, wet, or dung-soiled fleeces. Female blowflies lay eggs in moist wool; larvae hatch within 12–24 hours and begin feeding on living flesh. Signs include restlessness, tail-wagging, biting at the fleece, a foul odour, and visible maggots on close inspection. Immediate treatment: clip and clean the affected wool area, remove all maggots manually, apply a flystrike-specific insecticide, and consult a veterinarian for wound care. Preventive shearing before summer (March–April) is the most effective strategy.

9. Foot Rot (Fussobacterium necrophorum + Dichelobacter nodosus)

Type: Bacterial | Mortality: Low (but severe economic loss) | Wool Impact: Moderate (indirect)

Foot rot causes severe lameness across multiple feet, a distinctive foul smell from the hooves, and separation of the hoof wall from the sole. Affected sheep cannot graze properly, leading to significant weight loss, reduced body condition, and consequently lighter, lower-quality wool fleeces. Treatment involves foot bathing with zinc sulphate or formalin solution, hoof trimming in dry conditions, and systemic antibiotics (penicillin or oxytetracycline) prescribed by a veterinarian. Keep affected animals in dry paddocks away from mud and standing water.

10. Pneumonia (Pasteurellosis)

Type: Bacterial | Mortality: Moderate to High | Wool Impact: Moderate

Pneumonia in sheep is most often caused by Pasteurella multocida or Mannheimia haemolytica. It presents as persistent coughing, nasal discharge progressing from clear to purulent (yellow-green), laboured breathing, fever (103–106°F), loss of appetite, droopy ears, and separation from the flock. Affected sheep rapidly lose body condition. Treatment requires broad-spectrum antibiotics (oxytetracycline, florfenicol, or penicillin) under veterinary guidance. Good ventilation in housing, avoiding overcrowding, and reducing dust and ammonia levels in sheds significantly reduce pneumonia risk.

11. Tetanus (Lockjaw)

Type: Bacterial (Clostridium tetani) | Mortality: High (90%+ if untreated) | Wool Impact: Indirect

Tetanus infects sheep through wounds from shearing, docking, castration, ear-tagging, or foot injuries. Symptoms include muscular stiffness, difficulty swallowing, rigidity of abdominal muscles, bloat, and uncoordinated walking. The animal typically dies within 3–10 days without treatment. Inject antitoxin first, then treat with penicillin. Prevention: vaccinate with a Clostridial multi-valent vaccine before shearing season and any routine procedures. Clean all instruments with disinfectant before use.

12. Coccidiosis

Type: Protozoal | Mortality: High in lambs | Wool Impact: Moderate

Coccidiosis is caused by Eimeria species and primarily affects lambs under 6 months. The main symptom is profuse, often bloody or mucus-stained diarrhoea. Lambs lose body condition rapidly and, if they survive, often remain stunted — permanently producing lower-quality, lighter fleeces. Treatment uses amprolium or sulphonamide drugs prescribed by a veterinarian. Strict pen hygiene — preventing faecal contamination of feed and water — is the most important preventive measure.

Complete Sheep Vaccination Schedule for India 2026

India’s Department of Animal Husbandry and Dairying (DAHD) and the Livestock Health and Disease Control Programme (LHDCP) provide several vaccines either free or at highly subsidized rates. Registering your flock on the Bharat Pashudhan portal ensures you receive timely vaccination notices and records.

How to Prevent Sheep Diseases and Improve Wool Quality — 7-Step Care Protocol

Based on guidelines from ICAR-CSWRI Avikanagar and the Department of Animal Husbandry and Dairying, the following 7-step protocol delivers the best results for disease prevention and wool quality improvement simultaneously.

1. Follow the Annual Vaccination Calendar: Register your flock on Bharat Pashudhan. Schedule PPR (once every 3 years), FMD (every 6 months), Sheep Pox (annually before monsoon), and Enterotoxaemia (every 6–12 months). Never skip FMD or PPR — both are free government programmes with proven 96%+ coverage success in states that comply fully.
2. Deworm Every 6 Months (Minimum): Use a broad-spectrum anthelmintic (albendazole, levamisole, or ivermectin — rotate classes to prevent resistance). Perform FAMACHA eye-colour scoring in high-worm-burden areas to prioritize animals most in need. In monsoon season and high-rainfall zones, deworm every 3–4 months.
3. Control External Parasites — Dip or Pour-On Twice a Year: Use insecticidal dips (cypermethrin, deltamethrin) or pour-on formulations. Schedule one treatment before summer (April–May) to prevent flystrike, and one after monsoon (October–November) to control keds and mites. Always shear sheep before dipping for maximum skin contact.
4. Provide Balanced Nutrition for Wool Growth: Wool fibre is 97% protein (keratin). Supplementing 50–100g of bypass protein (fish meal, soybean) per sheep per day during peak wool growth season (October–February) significantly improves fibre diameter consistency. Copper deficiency causes depigmentation and loss of crimp — supplement with copper-fortified mineral mixtures at 10g per sheep per day. Sulphur-containing amino acids (cysteine, methionine) in the diet directly stimulate wool follicle activity.
5. Maintain Clean, Well-Ventilated Housing: Damp, overcrowded sheds cause pneumonia, footrot, and flystrike. Ensure 1.5–2 sq metres per adult sheep in enclosed housing. Clean dung from pens every alternate day. Use dry sand or wood ash as a litter material. Good ventilation cuts respiratory disease incidence by more than 50% in Indian conditions.
6. Practice Timely Machine Shearing: Faulty hand-shearing leaves up to 25% of wool on the animal’s body and causes skin cuts that invite tetanus and flystrike infections. Shifting to electric machine shearing (available through state sheep corporations and CWDB camps) improves wool weight by 15–20%, reduces second-cuts, and produces a cleaner, longer staple. Shear twice a year — ideally in March–April and September–October.
7. Quarantine New Animals for 30 Days: Every new animal introduced to your flock is a potential carrier of PPR, Sheep Pox, Scab, and internal parasites. Isolate new arrivals in a separate pen for 30 days. Vaccinate and deworm them before integration. This single practice prevents the most common and catastrophic disease outbreaks in sheep flocks across India.

Disease-Neglected vs. Disease-Managed Sheep Flocks — Key Comparison

Advantages and Disadvantages of Intensive Sheep Health Management

Intensive disease management and care is the recommended approach, but it comes with real-world trade-offs that every sheep farmer should understand before committing.

Advantages

• ✅ Wool yield increases 30–50% compared to unmanaged flocks over 2–3 years
• ✅ Wool fibre diameter becomes more consistent — enabling higher-grade pricing (apparel vs. carpet)
• ✅ Lamb survival rate rises from 60–70% to 85–95%, growing flock size faster without extra purchase costs
• ✅ Flock mortality drops from 15–25% to 3–5%, protecting capital investment
• ✅ Eligible for government subsidies: NLM, CWDB SWIS scheme, NABARD loans, and state sheep corporation services
• ✅ Better wool fetches Rs. 60–150/kg vs. Rs. 20–40/kg for disease-damaged carpet wool

Disadvantages

• ❌ Higher upfront investment in vaccines, dewormers, and veterinary fees (Rs. 300–600/sheep/year)
• ❌ Requires record-keeping (vaccination dates, deworming cycles) — a challenge for illiterate or elderly farmers
• ❌ Veterinary access is limited in remote hill and tribal areas, making the full protocol difficult to execute
• ❌ Machine shearing requires access to state camps or hired equipment — not available in all villages yet

Important Terms in Sheep Health and Wool Quality Management

Understanding these key terms helps sheep farmers communicate effectively with veterinarians, scheme officers, and wool buyers.

Fibre Diameter (Microns): The most important wool quality parameter. Finer microns (18–24 for Merino-cross; 30–40 for carpet breeds) command higher prices. Disease stress increases fibre diameter unevenness. ICAR-CSWRI’s 2026 genetic evaluation of Harnali sheep found that staple length and fibre diameter are both moderately heritable — meaning both breeding and health management matter equally.

Staple Length: The length of a wool lock from the skin to the tip after one full year’s growth. Disease disruption causes “tender” spots (weak zones) in the staple, which break during processing and reduce commercial value.

FAMACHA Scoring: A field method to detect barber’s pole worm burden by examining the colour of the sheep’s lower eyelid conjunctiva. A score of 1 (red) = healthy; 5 (white/pale) = severely anaemic and urgently needs treatment. Used widely by extension workers in India to identify priority animals for deworming without laboratory tests.

Anthelmintic Resistance: A growing problem in Indian sheep flocks where the same dewormer class is used repeatedly. Rotate between benzimidazoles (albendazole), macrocyclic lactones (ivermectin), and levamisole each deworming cycle to prevent resistance buildup.

Bharat Pashudhan: The Government of India’s national livestock identification and traceability portal (managed by DAHD). Registering sheep on this portal is required to access free PPR and FMD vaccination under LHDCP, and for livestock insurance schemes.

CWDB (Central Wool Development Board): Established 1987 under the Ministry of Textiles, Government of India. Runs the Sheep and Wool Improvement Scheme (SWIS) — a flagship programme providing health care, breed improvement, and capacity building for sheep breeders across India.

NLM (National Livestock Mission): DAHD’s central scheme running since 2014-15, revised from 2021-22. Supports breed improvement, entrepreneurship in sheep/goat farming, increased productivity, and welfare measures. Provides capital subsidies for setting up sheep units and veterinary infrastructure.

Bottle Jaw: A clinical sign (swelling under the jaw from fluid accumulation) seen in sheep heavily burdened with barber’s pole worm or liver fluke. It signals severe protein loss and anaemia requiring urgent treatment.

Important Links for Sheep Farmers in India

Conclusion

Sheep diseases and care for wool quality are two sides of the same coin — you cannot improve one without managing the other. The 12 diseases covered in this guide are responsible for an estimated 20–30% of India’s annual wool production shortfall, and every one of them is either preventable through vaccination and management or significantly treatable with early detection. Following the 7-step care protocol — built on ICAR-CSWRI research and DAHD government guidelines — can realistically increase your flock’s wool yield by 30% and shift your wool grade from carpet-quality pricing to apparel-quality pricing within 2–3 years.

Register your flock on Bharat Pashudhan (dahd.nic.in) to access free PPR and FMD vaccination under the LHDCP, and contact your nearest Krishi Vigyan Kendra (KVK) or State Animal Husbandry Department for CWDB’s SWIS scheme benefits and NLM subsidies available in your district.

Frequently Asked Questions About Sheep Diseases and Care for Wool Quality

What is the most dangerous disease for sheep in India?

PPR (Peste des Petits Ruminants), also known as Goat Plague, is the most dangerous disease for sheep in India. It is caused by a highly contagious Morbillivirus and can kill 30–90% of unvaccinated animals in an affected flock within 5–10 days. The Government of India provides PPR vaccine free of cost under the National PPR Control Programme run by DAHD, and a single dose gives immunity for 3 years. PPR vaccination is the single most important health intervention for any sheep farmer in India.

How do sheep diseases affect wool quality?

Sheep diseases affect wool quality through two main mechanisms. First, disease diverts the animal’s metabolic energy away from wool fibre production toward fighting infection, resulting in thinner, lighter, and weaker staples. Second, specific diseases cause direct physical damage — Sheep Pox permanently destroys wool follicles in affected skin areas, external parasites (mites, keds) stain and damage fleece fibres directly, and flystrike by blowfly maggots physically destroys the fleece at the strike site. A disease-stressed flock can lose 20–35% of its potential wool value in a single year.

How often should I deworm my sheep for better wool quality?

The minimum recommended deworming frequency for sheep in India is every 6 months. However, in high-rainfall states (Kerala, West Bengal, northeastern states, Western Ghats zones) and during the monsoon season, quarterly deworming is recommended by ICAR-CSWRI because warm, moist conditions accelerate worm lifecycle completion. Always deworm at least 15 days before vaccination to ensure the immune system responds effectively to vaccines. Rotate between anthelmintic drug classes (albendazole, levamisole, ivermectin) to prevent resistance development.

What is the vaccination schedule for sheep in India 2026?

The 2026 vaccination schedule for sheep in India, as per DAHD and state animal husbandry departments, includes: PPR vaccine at 3 months of age (repeat every 3 years — free under National PPR-CP); FMD vaccine at 3–4 months with a booster 3–4 weeks later, then every 6 months (free under NADCP); Sheep Pox vaccine annually before monsoon season; Enterotoxaemia vaccine at 3–4 months with a booster, then every 6–12 months; and Haemorrhagic Septicaemia vaccine annually before monsoon. Contact your nearest Veterinary Assistant Surgeon or block-level Animal Husbandry office for the exact schedule in your district.

What are the symptoms of PPR in sheep?

Symptoms of PPR in sheep include a sudden high fever of 40–41°C, watery discharge from the eyes and nose that progressively becomes thick and purulent (yellow-green pus), erosions and ulcers in the mouth and on the tongue, foul-smelling watery diarrhoea, severe respiratory distress with laboured breathing, and in pregnant ewes, abortion. Animals can die within 5–10 days. There is no specific antiviral treatment — supportive care (antibiotics for secondary infections, oral rehydration salts) can help valuable animals survive. The only effective protection is timely vaccination.

How can I improve sheep wool quality naturally?

To improve sheep wool quality naturally and cost-effectively: maintain a disease-free flock through vaccination and deworming; supplement the diet with 50–100g of bypass protein (fish meal or soybean) per sheep per day during peak wool growth (October–February); provide a copper and sulphur-containing mineral mixture (10g/sheep/day) as copper deficiency directly causes depigmentation and loss of crimp; ensure clean, well-ventilated housing; practice timely machine shearing twice a year; and avoid stress events (abrupt feed changes, overcrowding, predator harassment) during wool growth phases, as stress hormones cause fibre diameter fluctuation that creates tender spots in the staple.

What is Sheep Pox and how does it affect wool production?

Sheep Pox (Variola Ovina) is a highly contagious viral disease caused by Capripoxvirus. It causes a mortality of 20–50% in lambs under 6 months. In adult sheep, while mortality is lower, the disease causes high fever, skin nodules that progress to deep pock lesions, respiratory distress, and acute enteritis. The pock lesions leave permanent scars that destroy wool follicles in the affected skin areas, meaning those patches will produce little or no wool for the rest of the animal’s life. Annual vaccination with Sheep Pox vaccine, scheduled before the monsoon season, is the only effective prevention.

What government schemes are available for sheep health management in India?

Several government schemes support sheep health management in India: the Livestock Health and Disease Control Programme (LHDCP) by DAHD provides free PPR and FMD vaccines; the National Livestock Mission (NLM) offers capital subsidies for setting up sheep enterprises and breed improvement; the Central Wool Development Board (CWDB) runs the Sheep and Wool Improvement Scheme (SWIS) covering healthcare, breed improvement, and farmer training; state-level schemes include Rajasthan’s sheep breeding programme, Maharashtra’s Mahamesh Yojana, and Telangana’s Sheep Distribution Scheme. Farmers must register livestock on the Bharat Pashudhan portal (dahd.nic.in) to access most of these benefits.

How does proper shearing improve wool quality?

Proper shearing — ideally with electric machines — improves wool quality and yield in several ways. Faulty hand-shearing leaves up to 25% of wool on the sheep’s body and creates multiple small skin cuts that become entry points for tetanus bacteria and blowfly strike infections. Machine shearing produces a single, even cut close to the skin, maximising staple length and removing almost all harvestable fibre. Shearing twice a year (March–April before summer; September–October after monsoon) also prevents dung and vegetable matter from tangling deep into the fleece, which would degrade its commercial grade. The Central Wool Development Board (CWDB) organises machine shearing camps through state wool corporations.

Last Updated: October 2026 | This guide is reviewed and updated regularly for accuracy. Bookmark this page for the latest sheep disease and care information from official government sources.

Disclaimer: This article is for informational purposes only and is based on published guidelines from ICAR, DAHD, and TNAU. It does not replace professional veterinary advice. Always consult a qualified veterinarian for diagnosis and treatment of your animals.

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