Help with Anova interpretation

Hi Guys

This is probably simple but I cannot see it.

The question is asking how do I determine the number of levels in the anova. Attached is a screenshot of the question and anova table...

is it just the degrees of freedom + 1? so 3 levels in this anova?

Hoping someone can help.
thanks mate. just wasn't 100% sure.

So then going off that, the total number of sheep in the experiment is the degrees of freedom within groups + the number of levels = 565?