Does a Shofar Have to Be Kosher?
Though the Majority of Shofros Originate as Rams' Horns, the Yemenite Community Traditionally Utilizes the Horn of an African Antelope Called the "Kudu"...
Though the majority of shofros originate as rams' horns, the Yemenite community traditionally utilizes the horn of an African antelope called the "kudu". ... However, many horns are kosher for use as a shofar, unless they originate from cattle or a non-kosher species.
What is a Yemenite shofar made of?
The Yemenite shofars are the long, curly ones made out of antelope horns, which undergo no reshaping or polishing.
When should shofar be blown?
The Talmud specifies that the shofar is blown on two occasions on Rosh Hashana: once while "sitting" (before the Mussaf prayer), and once while "standing" (during the Mussaf prayer). This increases the number of blasts from the basic requirement of 30, to 60.