Assign default value for struct field

I want to assign default value for struct field in Go. I am not sure if it is possible but while creating/initializing object of the struct, if I don't assign any value to the field, I want it to be assigned from default value. Any idea how to achieve it?

type abc struct {
    prop1 int
    prop2 int  // default value: 0
}
obj := abc{prop1: 5}
// here I want obj.prop2 to be 0