开龙蛋初代全是雌，好不容易开出来了雄宠繁殖宠物二代全是雌，三代全是雄，医院里做B超都取消了性别鉴定了，我就想知道你们是怎么做到这一点的😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱😱