Mishnayos Beitzah Perek 3 Mishnah 3

If an animal is in danger of dying, in which case its meat would be prohibited as the animal had not been properly slaughtered, and one wishes to slaughter it in the hope that it will be found fit for eating and he will be spared a loss, he may not slaughter it on a Festival unless there is still time in the day for him to eat an olive-bulk of roasted meat from the animal, so that it is possible to say that he slaughtered the animal for the sake of the Festival. Rabbi Akiva says: There need not be enough time for him to roast it; rather, it is sufficient even if there is only time to eat an olive-bulk of raw meat from the place where the animal is slaughtered, i.e., from its neck, without going to the trouble of removing its hide and roasting it. If one slaughtered an animal on a Festival in the field, he may not bring it to his house on a pole or on a set of poles carried by two people, as this appears similar to a weekday activity. Rather, he must alter his usual weekday manner of performing this action and bring it in by hand, limb by limb. A male firstborn of cattle, sheep, or goats belonging to a Jew is sanctified from birth and must be given to a priest to be sacrificed on the altar in the Temple. If a firstborn animal acquired a physical blemish that disqualifies it from being sacrificed as an offering, it still must be given to a priest, but it may be redeemed, slaughtered, and eaten as non-sacred meat.

בְּהֵמָה מְסֻכֶּנֶת לֹא יִשְׁחֹט, אֶלָּא אִם כֵּן יֵשׁ שָׁהוּת בַּיּוֹם לֶאֱכֹל מִמֶּנָּה כַּזַּיִת צָלִי. רַבִּי עֲקִיבָא אוֹמֵר, אֲפִלּוּ כַזַּיִת חַי מִבֵּית טְבִיחָתָהּ. שְׁחָטָהּ בַּשָּׂדֶה, לֹא יְבִיאֶנָּה בְמוֹט וּבְמוֹטָה. אֲבָל מֵבִיא בְיָדוֹ אֵבָרִים אֵבָרִים: