Nafi' narrates from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that it is recommended to face the qiblah when slaughtering an animal.
A marfu' hadith on this has also been narrated from Sayyidah Aishah (may Allah be pleased with her), and its chain is weak.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19173