1. Diet problem: The lion-headed goose may be weak and unable to support itself because of diet problems. Please make sure to give lions and geese enough food and nutrition, including proper feed and enough water.
2. Unbalanced nutrition: If the diet of the lion-headed goose is unbalanced and lacks some necessary nutrition, it may also lead to physical weakness. It is suggested to check the feed formula of lion-headed goose to ensure its comprehensive nutrition.
3. Virus infection: Lionhead Goose may be infected with virus, resulting in weakness. Some common viral infections include avian influenza and duck plague. If symptoms persist or worsen, please consult a veterinarian.
4. Trauma or injury: The lion-headed goose may be injured or damaged during the operation, which makes it impossible to stand. Please check whether there is any obvious trauma on the body of the lion-headed goose, such as fracture and dislocation. If so, you should seek the help of a veterinarian as soon as possible.
In short, the sudden inability of the lion-headed goose to stand may be caused by dietary problems, unbalanced nutrition, virus infection or trauma. For accurate diagnosis and treatment, please consult a veterinarian as soon as possible.