  We perform a detailed abundance analysis on integrated-light spectra of 20
globular clusters (GCs) in the early-type galaxy NGC 5128 (Centaurus A). The
GCs were observed with X-Shooter on the VLT. The cluster sample spans a
metallicity range of $-1.92 < $ [Fe/H] $< -0.13$ dex. Using theoretical
isochrones we compute synthetic integrated-light spectra and iterate the
individual abundances until the best fit to the observations is obtained. We
measured abundances of Mg, Ca, and Ti, and find a slightly higher enhancement
in NGC 5128 GCs with metallicities [Fe/H] < $-$0.75 dex, of the order of
$\sim$0.1 dex, than in the average values observed in the MW for GCs of the
same metallicity. If this $\alpha$-enhancement in the metal-poor GCs in NGC
5128 is genuine, it could hint at a chemical enrichment history different than
that experienced by the MW. We also measure Na abundances in 9 out of 20 GCs.
We find evidence for intra-cluster abundance variations in 6 of these clusters
where we see enhanced [Na/Fe] > $+$0.25 dex. We obtain the first abundance
measurements of Cr, Mn, and Ni for a sample of the GC population in NGC 5128
and find consistency with the overall trends observed in the MW, with a slight
enhancement ($<$0.1 dex) in the Fe-peak abundances measured in the NGC 5128.
