What is meant by "Al-Barbar" in the mentioned Prophetic Hadiths, and what is the reason for their inclusion?

The first hadith is not authentic due to the weakness of its narrator, Ibn Lahi'ah. As for the second hadith, it pertains to the sacrifices of the Berbers before their conversion to Islam. Their slaughtered animals are considered carrion, like those of the Majus (Zoroastrians). The ruling is that only the slaughtered animals of Muslims and People of the Book are permissible.