The Talmud tells us that the horns of all kosher animals are kosher for shofars, except for the horn of an ox,
which is technically not called a “shofar” but a “keren,” and antlers, which are not considered shofars
(shofar means “hollow” and antlers are solid).
Yet, of all the possibilities, the preferred source for the shofar is the ram, for the following two reasons:
1. It evokes the ram that was offered instead of Isaac, bringing to light the merit of Abraham who was ready to
sacrifice his only son for G‑d.
2. Its bent shape symbolizes the humility we feel as we stand before G‑d.
The primary shofar blowing consists of the following 30 blasts:
Tekiah-shevarim-teruah-tekiah
Tekiah-shevarim-teruah-tekiah
Tekiah-shevarim-teruah-tekiah
Tekiah-shevarim-tekiah
Tekiah-shevarim-tekiah
Tekiah-shevarim- tekiah
Tekiah-teruah-tekiah
Tekiah-teruah-tekiah
Tekiah-teruah-tekiah gedolah (extra long blast)
During the Musaf prayer, we have 7 more opportunities to blow the shofar, producing the following 10 blasts each time:
Tekiah-shevarim-teruah-tekiah
Tekiah-shevarim-tekiah
Tekiah-teruah-tekiah
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https://www.chabad.org/library/article_cdo/aid/4837/jewish/Shofar.htm