Covering gonalities of complete intersections in positive characteristic

We define the covering gonality and separable of varieties over arbitrary fields, generalizing definition given by Bastianelli-de Poi-Ein-Lazarsfeld-Ullery for complex varieties. show that an field a smooth multidegree $(d_1,\ldots,d_k)$ complete intersection in $\mathbb{P}^N$ has at least $d-N+1$, where $d=d_1+\cdots+d_k$. also very general such variety $\frac{d-N+2}{2}$.