יורה דעה כ״חYoreh De'ah 28

Se’if 1א׳

הַשּׁוֹחֵט חַיָּה אוֹ עוֹף צָרִיךְ לְכַסוֹת דָּמוֹ, בֵּין צָדָן עַתָּה בֵּין שֶׁהָיוּ מְזֻמָּנִים בְּיָדוֹ. הַגָּה: וְהַכִּסּוּי הוּא מִצְוָה בִּפְנֵי עַצְמָהּ (כָּךְ מַשְׁמָע בַּאֲשֵׁרִי פֶּרֶק כִּסוּי הַדָּם), אֲבָל הַשְּׁחִיטָה כְּשֵׁרָה אַף אִם הֵזִיד וְלֹא כִּסָּה (בֵּית יוֹסֵף וְכֵן כָּתַב א"ח וְכ"ה בְּכָל בּוֹ).

One who slaughters a wild animal or a bird needs to cover its blood, whether it was just trapped now or whether it was already ready in his hand. Rema: And the covering is a commandment onto itself, but the slaughtering is valid even if [the blood] was purposely not covered.

Se’if 2ב׳

חַיָּב לְבָרֵךְ קֹדֶם שֶׁיְּכַסֶה: אֲשֶׁר קִדְּשָׁנוּ בְּמִצְוֹתָיו וְצִוָּנוּ עַל כִּסוּי דָּם בְּעָפָר. הַגָּה: מִי שֶׁשָּׁחַט פַּעַם הָרִאשׁוֹן, מְבָרֵךְ שֶׁהֶחֱיָנוּ עַל הַכִּסּוּי אֲבָל לֹא עַל הַשְּׁחִיטָה, דְּמַזִּיק לִבְרִיָּה (בְּמִנְהָגִים יְשָׁנִים בְּשֵׁם רַבִּי יְדִידְיָה מִשַּׁפִּירָא).

One is obligated to make a blessing before he covers [the blood]: "... who sanctified us with his commandments and commanded us on covering blood in dirt." Rema: One who slaughters for the first time, makes a blessing of "that he gave us life" on the covering but not on the slaughtering since it damages a creature.

Se’if 3ג׳

כּוֹי שֶׁהוּא סָפֵק חַיָּה, וְכִלְאַיִם הַבָּא מִבְּהֵמָה וְחַיָּה, צָרִיךְ לְכַסוֹת דָּמָן וְאֵינוֹ מְבָרֵךְ. וְאֵין שׁוֹחֲטִין אוֹתָם בְּיוֹם טוֹב. וְאִם שְׁחָטָן; אֵינוֹ מְכַסֶה דָּמָן; וּבַלַּיְלָה, אִם רִשּׁוּמוֹ נִכָּר, יְכַסֶנּוּ.

the Koy animal which is questionable if it's a wild animal, and mixed-breeds that come from domesticated and wild animals, one needs to cover their blood and there is no blessing made. And we don't slaughter them on holidays. And if they were slaughtered [on a holiday] their blood it not covered. And [after the holiday] at night, if [the blood's] imprint is recognizable, he should cover it.