Keeping sheep and goats healthy is one of the most important responsibilities for any farmer or livestock keeper. These animals belong to the ruminant family and share a similar digestive and immune system. Because of these similarities, many diseases affect both species in almost the same way. In regions where mixed herds of sheep and goats are common, illnesses can easily spread from one species to the other, making early identification and proper management essential to avoid economic losses.
This article explains some of the most common diseases found in sheep and goats—focusing especially on pneumonia, foot rot, foot and mouth disease, and bottle jaw—while also covering several other important infections that every farmer should understand.
Pneumonia in Goats and Sheep: A Major Respiratory Threat
Pneumonia in sheep and goat remains one of the most widespread and damaging diseases. The condition develops when the tissues of the lungs become inflamed due to bacterial, viral, or environmental factors. The bacteria Pasteurella multocida and Mannheimia haemolytica—normally present in the upper airways—are the most common culprits. Under stressful conditions such as overcrowding, sudden weather changes, transportation, poor ventilation, or the presence of lungworms, these bacteria multiply rapidly and cause severe respiratory illness.
Animals suffering from pneumonia typically show high fever, painful and moist coughing, rapid or difficult breathing, nasal discharge, watery eyes, crackling sounds from the lungs, weakness, and a noticeable drop in appetite. Young lambs and kids are especially vulnerable and may die quickly if the disease is not identified early.
Treatment usually requires prompt antibiotic therapy prescribed by a veterinarian. Medications such as oxytetracycline, penicillin, florfenicol, ceftiofur, and tylosin are commonly used depending on the severity of the infection. Infected animals should be kept dry, warm, and in well-ventilated areas to improve recovery and prevent further spread. Vaccination, good management practices, avoiding overcrowding, and reducing stress are highly effective ways to prevent pneumonia outbreaks.
Foot Rot (Hoof Rot) in Sheep and Goats
Foot rot in sheep and goat is another destructive disease that affects both species and is particularly common in areas with wet, muddy, or humid conditions. It results from a combination of two bacteria—Dichelobacter nodosus and Fusobacterium necrophorum—that attack the soft tissues of the hooves. Once established, foot rot spreads quickly throughout the herd and leads to severe pain, difficulty walking, and significant production losses.
Animals with foot rot typically show swelling between the toes, foul-smelling discharge, loose hooves, and obvious lameness. If not treated early, the hoof tissues may completely separate, leaving the animal unable to walk normally.
Managing foot rot requires a combination of hoof trimming, disinfecting hooves through medicated foot baths, and treating severe cases with antibiotics. Isolating infected animals prevents the disease from spreading to healthy ones. Keeping the environment dry, practicing regular hoof care, and using vaccines (available for sheep in many countries) are among the most reliable preventive measures. While sheep vaccines are common, goat-specific vaccines are not yet widely available, making hygiene and early detection especially important in goat herds.
Foot and Mouth Disease (FMD): A Highly Contagious Viral Threat
Foot and Mouth Disease is one of the most feared viral diseases affecting all cloven-hoofed animals, including sheep and goats. Although the symptoms in sheep and goats are often milder than in cattle, these animals play a major role in silently spreading the virus.
The disease is characterized by a sudden fever followed by blisters on the mouth, gums, tongue, and hooves. These blisters quickly rupture, causing painful raw areas that make eating and walking extremely difficult. Affected animals may drool excessively, refuse feed, limp severely, and show a dramatic drop in milk production.
There is no direct cure for FMD. Treatment focuses on reducing pain, providing soft feeds, maintaining good hydration, and keeping infected animals separated from the rest of the herd. Disinfection and strict hygiene protocols must be followed during outbreaks.
Vaccination remains the most effective form of prevention in countries where FMD is common. Farmers should also follow strong biosecurity practices such as quarantining new animals, controlling farm visitors, and limiting animal movements. Because FMD spreads easily through air, saliva, manure, and equipment, early detection and rapid response are vital to protect livestock and prevent large-scale economic losses.
Bottle Jaw in Sheep and Goats
Bottle jaw is not a disease on its own but rather a symptom of a more serious underlying issue. It appears as a soft, fluid-filled swelling under the lower jaw and is commonly caused by severe parasitic infection, especially by the barber-pole worm (Haemonchus contortus). This parasite feeds on blood, causing extreme anemia and protein loss. When blood proteins become too low, fluid accumulates under the jaw—resulting in the characteristic “bottle jaw” appearance.
Animals with bottle jaw often have pale eyelids, weight loss, poor growth, weakness, and reduced appetite. Liver fluke infections can also cause bottle jaw, as can chronic diarrhea, malnutrition, or kidney disease.
Treatment usually begins with effective deworming based on local resistance patterns. In many regions, ivermectin, moxidectin, or benzimidazole dewormers are used, but resistance must always be monitored. Along with deworming, improving nutrition and providing iron supplements help animals recover more quickly. Preventing the condition requires regular FAMACHA scoring, rotational grazing, avoiding overstocking, and strategic deworming programs during high-risk seasons.
Caprine Arthritis and Encephalitis (CAE)
CAE is a chronic viral infection primarily affecting goats, though sheep can occasionally carry related viruses. The disease spreads mainly through infected colostrum or milk. Over time, infected animals develop swollen joints, stiffness, lameness, weight loss, and in some cases, pneumonia or hard udders. Young kids may develop neurological signs such as tremors, weakness, or paralysis.
There is no cure for CAE, making prevention crucial. Farmers should test their herds regularly, feed kids heat-treated colostrum, avoid reusing needles, and isolate or remove infected animals to prevent the disease from spreading.
Pregnancy Toxemia (Twin Lamb Disease)
Pregnancy toxemia is a serious metabolic disorder that affects pregnant sheep and goats, especially those carrying twins or triplets. It develops during the last months of pregnancy when the animal’s energy needs exceed what it consumes. As a result, the body breaks down fat, producing harmful ketones that lead to weakness, poor appetite, difficulty walking, tremors, and eventually coma or death if untreated.
Early intervention improves survival. Giving energy-rich supplements such as propylene glycol, improving feed quality, and reducing stress during late pregnancy are key prevention methods.
White Muscle Disease in Sheep
White Muscle Disease in sheep and goat is a nutritional disorder in sheep caused by a deficiency of selenium and vitamin E, leading to degeneration of the skeletal and heart muscles. Affected lambs often appear weak, stiff, and reluctant to move, while severe cases may show difficulty breathing or sudden collapse due to heart involvement. Early diagnosis and supplementation are essential to reduce losses, and prevention relies on providing adequate minerals through feed, injections, or mineral blocks to pregnant ewes and growing lambs.
Bluetongue in Sheep and Goats
Bluetongue is a viral disease transmitted by biting midges. Sheep are generally more affected, showing symptoms such as fever, facial swelling, drooling, difficulty breathing, and a bluish-colored tongue in severe cases. Goats often show mild or no symptoms but can still carry the virus.
There is no specific treatment, but supportive care and vector control using insect repellents, along with vaccination in high-risk regions, help reduce the disease’s impact.
Bloating in Lambs
Bloating in lambs occurs when gas accumulates in the stomach faster than it can be released, usually after overeating lush pasture, consuming grain too quickly, or experiencing sudden dietary changes. A bloated lamb may show abdominal swelling, discomfort, restlessness, and difficulty breathing. Immediate attention is crucial, as severe bloat can become life-threatening. Proper feeding management, slow introduction to rich diets, and ensuring consistent access to roughage are key steps in preventing bloat in young lambs.
Scours (Diarrhoea) in Lambs
Scours in lambs is a common condition marked by watery diarrhoea caused by infections, poor nutrition, internal parasites, or inadequate colostrum intake shortly after birth. Affected lambs quickly become weak and dehydrated, making early treatment essential. Management includes electrolyte replacement, isolating sick lambs to reduce spread, and addressing the underlying cause. Good hygiene in lambing areas, proper feeding, and timely vaccination programs are effective strategies to minimise the incidence of scours in young lambs.
Sheep and Goat Pox
Sheep pox and goat pox are highly contagious viral diseases common in parts of Asia, Africa, and southeastern Europe. After a short incubation period, animals develop fever, nasal discharge, and swelling around the eyes, followed by characteristic skin lesions that form scabs and eventually leave hairless scars. Severe cases may also affect the lungs.
Vaccination remains the best preventive measure, supported by strong biosecurity practices and early detection.
Other Common Diseases in Sheep and Goats
Several other important diseases affect small ruminants. Enterotoxemia, also known as overeating disease, causes sudden death due to toxins produced by Clostridium perfringens; regular vaccination provides excellent protection. Pinkeye leads to swollen, red, and cloudy eyes and can cause blindness if untreated. Listeriosis, known as circling disease, comes from spoiled feed and causes neurological symptoms. Additionally, Mycoplasmosis affects the udder, eyes, and lungs, while Polioencephalomalacia results from thiamine deficiency and causes seizures and blindness. Scrapie, a fatal prion disease, results in severe itching and neurological decline and has no cure.
Final Thoughts
Healthy sheep and goats require attention, proper nutrition, hygiene, and regular veterinary care. Diseases like pneumonia, foot rot, foot and mouth disease, and bottle jaw can significantly affect productivity, welfare, and farm income. By learning the early signs of common diseases and adopting strong preventive practices—such as vaccinations, clean housing, parasite control, and quarantine protocols—farmers can protect their herds and ensure long-term sustainable livestock production.
