Oh, I finally checked out your user profile, and checked out your "church"'s webpage. Are the prescriptions of the Talmud still observed, even though you are supposedly "Messianic"?
Only in instances where such precepts do not add or take away from God's actual commands (cf. Deu. 4:5). Wherever we find a conflict between a tradition and the Scripture, the tradition is set aside.
For example, the Talmudic proscription against eating milk with beef is based on a misunderstanding of a particular command not to boil a calf in its mother's milk, which is either a reference to a pagan practice of the day or a command not to withhold the firstborn from being sacrificed. However, since Abraham served God Himself milk with beef (Gen. 18:8), obviously the concept that a calf should not be "boiled" with milk in the stomach is wrong.
Yeshua did not come to do away with the Torah, per His own words. Rather, He came to restore the Torah to its original simplicity. But neither did He do away with all extra-Biblical traditions; the ritual drinking of wine at Passover and baptism (mikveh) being two prominent examples which were enshrined as New Covenant practice. So neither do we simply reject all tradition out of hand.
If a person observes the Sabbath, resting on and keeping holy the seventh day, he has fulfilled the whole commandment, whether or not he says the traditional Jewish prayers or lights the traditional Sabbath candles. We recognize the fact that we do as being tradition, not binding Scripture. For the most part, I give my brothers and sisters in Christ a pass on treating Sunday as the Sabbath, since we are indeed saved by trusting Yeshua, not by keeping the Sabbath in just such-and-such a way.
But I hold any who claim to be the one, true "Holy, Universal, and Apostolic Church" to a much higher standard.