1. Hatching: Goose is responsible for hatching eggs and taking care of goslings. In this process, it needs to consume a lot of energy. Subcutaneous fat storage can provide energy and nutrients to meet the needs of geese during hatching.

2. Reproduction: In the breeding season, geese need more energy to maintain health and reproductive activities. Subcutaneous fat storage can provide energy and nutrition for geese, maintain their good health, and provide sufficient energy support for the breeding process.