Arabic (and Berber?) loanwords in southern Italy

Just came across a little monograph on Arabic and Berber loanwords in the dialects of the Basilicata (southern Italy): Sopravvivenze lessicali arabe e berbere in un'area dell'Italia meridionale, la Basilicata by Luigi Serra. Most of the loans listed are from Arabic, some quite obvious (eg taūt "coffin" < تابوت, źir "a copper or terracotta container for liquids" < زير, zammîl "big pannier with which various goods are transported on a beast of burden's back" < زنبيل), others rather less clear-cut.

Only three loans (and one placename) are claimed as from Berber. Two of them look acceptable, but all of them seem questionable, and they all refer to objects that there would have been no obvious reason to borrow terms for. It's possible that Berber influence can be found in southern Italian dialects, but this doesn't present a terribly convincing argument. Still, here they are:

• źembr / źimbr / zimr / źimmr "billy-goat" (caprone, becco) < pan-Berber izimmər "ram", p. 39. (Looks good, but why the shift in species? - Also, see comments for an alternative Greek etymology.)
  
• aččáta "big meal" (scorpacciata, mangiata, spanciata) < pan-Berber əčč "eat", p. 11. (The semantic and phonetic match are great, but the word is so short that coincidence seems hard to rule out.)
  
• šéḍḍa "wing" (ala) < Zenati Berber "bird", eg Siwi ašṭiṭ, p. 26. The author mentions an alternative possibility - deriving it from Italian ascella "armpit" - that seems much more plausible.
  
• Zaza (placename) < Berber azəzzu "thorny broom (plant sp.)" - not discussed in any detail (author cites Renisio), p. 41.