Husbandry is the care of the animal - everything about how you have it set-up. From the size of the enclosure (many new owners house in enclosures that are too large and overwhelming for a baby for example), to how you measure the temps (analog dial thermometers are known to be very inaccurate), where you measure the temps (is your DIGITAL thermometer mounted high in the enclosure, or at ground level where the snake spends its time), are the hides tight and snug so that your snake can feel it touching it on all sides when it's inside of it?
Those things and more are part of your husbandry. Take a look at the caresheet that dr del posted earlier in the thread and scroll down to "why won't my snake eat?" section for a list of husbandry related items that could be the root cause of why your snake isn't eating for you.