Poultry Judging Practice Test

What is the primary cause of rickets in poultry?

1. Excessive protein intake

2. Deficiency of calcium

3. Deficiency of vitamin C

4. Vitamin overdose

The correct answer is: Deficiency of calcium

Rickets in poultry is primarily caused by a deficiency of calcium, which is essential for proper bone development and maintenance. When there's an insufficient intake of calcium, it leads to improper mineralization of the bones, resulting in weak and deformed skeletal structures. This condition is particularly evident during growth periods when the demand for calcium is high. In poultry, calcium plays a critical role in the formation of eggshells and is vital for the overall health and structural integrity of their bodies. Without enough calcium, the bird's body will start to withdraw calcium from its bones to meet other physiological needs, ultimately leading to the softening of bones and the classic symptoms associated with rickets, such as bowed legs and difficulty in movement. While protein intake, vitamin C, and potential vitamin overdose can certainly impact bird health, they are not the primary factors that lead to rickets. A balanced diet that includes sufficient calcium, along with other essential nutrients, is crucial to preventing this condition in poultry.