| Summary Information |
| Diseases / List of Micronutrient
(Vitamin / Mineral) Diseases / Disease summary |
| Alternative Names |
- Cyanocobalamin Deficiency
- Cobalamin Deficiency
|
| Disease Agents |
Vitamin
B12 (cyanocobalamin), a water-soluble vitamin. "Involved in nucleic acid and methyl
synthesis and carbohydrate and fat metabolism. One of its main enzyme functions involves
isomerization of methylmalonyl coenzyme A to form succinyl CoA" (B32.2.w23). |
| Infectious
Agent(s) |
-- |
| Non-infectious
Agent(s) |
Vitamin B12
(deficiency). |
| Physical
Agent(s) |
-- |
| General Description |
Slow growth,
myodystrophy of the legs, poor hatchability and high mortality of young birds;
hydroencephalocoele may be seen in hatchlings from vitamin B12-deficient females (B16.19.w1, B35.13.w5). |
| Further Information |
- Requirements in ducks appear very low; ducklings usually have sufficient
levels from hatching (B13.46.w1).
- Prevention: Ensure sufficient vitamin B12 in the diet:
minimum requirements for birds 0.009-0.25 mg/kg feed, with suggested level for Pekin ducks
of 0.01mg/kg starter/breeder feed, 0.005mg/kg for grower/finisher diet (B13.46.w1, B16.19.w1, B35.13.w5).
|
| Techniques linked to this disease |
|
 |
| Host taxa groups /species |
|
| Disease has been reported in either the wild or
in captivity in the following WATERFOWL Species: |
Hydroencephalocele in
mallard duckling from a female with vitamin B12 deficiency (B16.19.w1, B35.13.w5). |
|
|
| Disease has been reported in free-ranging
populations of the following WATERFOWL Species: |
-- |
| -- |
