Ikrimah (may Allah have mercy on him) narrates from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that he used to say takbir from the Zuhr prayer on the Day of Sacrifice until the Asr prayer on the last of the days of Tashriq.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب صلاة العيدين / 6269