4 Common Vitamin Deficiencies in Chickens and How to Treat Them

Keeping a few chickens can be a wonderfully rewarding experience, especially if you enjoy fresh eggs and need a natural way to recycle kitchen scraps. However, ensuring your chickens receive a balanced and nutritious diet is crucial for their health and wellbeing. Vitamin deficiencies, while less common today due to formulated feeds, can still occur and lead to serious health problems if not addressed promptly.

1. Vitamin A Deficiency (Nutritional Roup)

Vitamin A deficiency is thankfully uncommon, but it primarily affects young chickens between 1 to 7 weeks old if their diet lacks sufficient amounts of this essential nutrient. Vitamin A plays a vital role in maintaining healthy mucous membranes and immune function.

• Poor growth and development
• Stunted or poor feather growth
• Discharge from the eyes and nostrils
• Lethargy and drowsiness
• Pale combs and wattles
• Swollen eyelids sometimes stuck shut due to thick discharge

Treatment and Prevention

If you notice these symptoms, consult your reputable chicken breeders or a vet promptly. Providing a vitamin A supplement in the drinking water can resolve deficiency symptoms. Prevention includes feeding a balanced diet of quality formulated feeds combined with safe kitchen scraps rich in vitamin A, such as leafy green vegetables and carrots. Additionally, antioxidants can support recovery.

2. Vitamin B Deficiencies

Vitamin B complex vitamins are water-soluble and cannot be stored by chickens, so they require a continuous supply. Deficiency, especially of certain B vitamins, can result in poor hatchability of eggs due to malnourished embryos.

• Curled toes due to paralysis
• Perosis (a deformity of the leg)
• Paralysis
• Scaly dermatitis on the skin
• Mouth lesions
• Conjunctivitis
• Anaemia
• Poor feather development
• Fatty liver and kidney syndrome
• Issues hatching eggs

Treatment and Prevention

Treat vitamin B deficiencies by adding a suitable multivitamin supplement to their water or feed. Make sure your chickens are drinking enough fluids to receive the remedy. Proper dosages are essential, so consult a vet or feed merchant for guidance. Prevent deficiency by ensuring a consistent supply of vitamin B-rich feed—including whole grains, legumes, and green vegetables.

3. Vitamin E Deficiency

Vitamin E deficiency often occurs in chickens fed diets excessively high in fat or rancid feeds. Muscular dystrophy is a typical sign in mature birds while young chickens may develop encephalomalacia or exudative diathesis.

• Loss of balance and staggering
• Involuntary muscle movements
• Paralysis
• Ventral oedema (fluid under the skin)
• Green discolouration of wings

Treatment and Prevention

Supplement vitamin E and selenium through feed and drinking water to promote recovery. If there are serious skin lesions, a vet may prescribe a course of antibiotics. Prevention relies on feeding a good-quality, specifically formulated diet alongside fresh raw foods, which supports overall nutrient balance.

4. Biotin Deficiency

Biotin deficiency is now rare due to advances in poultry nutrition, but poor feeding can still bring it about, potentially leading to fatty liver and kidney syndrome which can be fatal.

• Poor growth and development
• Weakness, especially in the legs
• Scabs around the beak and eyes
• Hard, thickened skin on foot pads
• Chondrodystrophy (developmental bone disorder)
• Sudden death related to fatty liver and kidney syndrome

Treatment and Prevention

Supplementing biotin in the feed or water is an effective treatment. Although biotin occurs naturally in many foods, the bioavailability is often low, so providing a supplement is safer and more reliable. Ensuring a balanced diet with quality poultry feed is the best preventive measure.

Responsible Care and Nutrition Tips

Always source your chickens from responsible breeders who prioritise health and nutrition. Regularly consult with a poultry vet for health checks and guidance on diet. Avoid feeding poultry foods that are toxic or inappropriate and keep feeding areas clean to reduce disease risk.

By understanding the signs of nutritional deficiencies and acting swiftly with appropriate diet and supplementation, you can keep your chickens thriving and productive for many years.