What is meant by "hump back" in the context of rabbit conformation?

In the context of rabbit conformation, "hump back" refers specifically to the condition of having a protrusion on the back. This indicates an abnormal shape which diverges from the ideal body structure for rabbits. In terms of conformation, rabbits are generally expected to have a smooth, flowing outline that features an arched back which is both functional and aesthetically pleasing. A "hump back" appearance typically suggests that the rabbit does not conform well to breed standards, often indicating improper breeding or health issues. Understanding this aspect of rabbit conformation is crucial for breeders and exhibitors aiming to achieve optimal physical characteristics in their rabbits.