iotin deficiency

1. BIOTIN DEFICIENCY
DEFINITION
Biotinis common in poultry feedstuffs, yet recent
evidence
concludes some of this biotin
may be biologically unavailable.
Turkeys seem more sensitive to biotin
deficiency than chickens.

2. Biotin (vitamin H)
Biotin is essential for growth, feed
utilization, epidermal tissue
maintenance bone development and
reproduction.
In poultry
• biotin deficiency clinically leads
to decreased growth rate
• epidermal and bone lesions.

3. ASSOCIATED DISORDERS
Biotin acts as a coenzyme in
carboxylases which are
involved in lipid and carbohydrate
metabolism. First signs
of biotin deficiency are related to
reduced cell proliferation

4. • Dermatitis
• Chondrodystrophy
• Fatty liver and kidney• in broiler chickens
• Fatty liver syndrome• in laying hens.
• Embryonic abnormalities and
reduced hatchability.

5. Dermatitis
In growing birds, the first signs of
biotin deficiency
occur in epidermal tissues
poor feathering
periocular and eyelid epidermitis
footpad dermatitis

7. TREATMENT
Water-soluble vitamins are readily available and may be
administered as needed.
To avoid problems
most starter
and grower rations
are supplemented with 0.1 to 0.3 mg/kg of biotin.