Curled Toe Paralysis
Newly hatched chicks are most susceptible to developing curly toes
- Feeding adult chickens intended for breeding, riboflavin deficient diets. Layer feed is not sufficient. Breeder feed with additional riboflavin sources are required.
- Stale feed - Feeding chicks outdated, improperly stored, low quality, or nutrient-deficient starter feed Feeding a corn-soybean meal based diet without providing supplemental riboflavin
- Warm climates - Environmental temperatures also have an impact on riboflavin requirements, and more is required for chickens raised in a tropical environment or exposed to chronic heat stress.
- Genetics - more modern strains of chicks that have been selectively bred for high egg production and "meat quality" (broilers)
Other Names: Hypovitaminosis B2, Riboflavin Deficiency
mg / kg
Young & Growing (10 - 20 wks)
6 to 8
Riboflavin Food Source
- Baby Food
- Yeast Extract
Vitamin Safety Concerns
There are no reports of riboflavin toxicity studies in poultry. According to the NRC, most data from studies conducted on rats have found that dietary levels between 10 and 20 times the requirement (possibly 100 times) can be tolerated safely.
- Toe curling
- Reluctance to move
- Slow growth despite a good appetite
- Sitting on hocks
- Using wings to walk
- Reluctance to stand or walk
Isolate the bird from the flock and place in a safe, comfortable, warm location (your own chick "intensive care unit") with easy access to water and food.
Administered IM (1-3 mg/kg q7d) or orally (1-2 mg/kg q24h)
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- Ensure any adult chickens intended for breeding are receiving enough riboflavin in their diet (10-16 mg/kg).
- Feed newly hatched chicks a fresh bag of starter chicken feed (not feed that has been stored for longer than 2 months), with additional riboflavin food sources during the two weeks of life.
- During warm weather, provide supplemental sources of riboflavin.
- Always store chicken feed properly and discard any left after 2 months.