The main difference between kosher and non-kosher meats is the way in which animals are slaughtered. For food to be kosher, animals have to be killed individually by a specially trained Jew known as a shochet. The meat then has to be salted to draw out and remove any blood.
Similarly one may ask, what makes kosher meat?
According to the laws of the Torah, to be eaten, a kosher species must be slaughtered by a "Schochet," a ritual slaughterer. Since Jewish Law prohibits causing any pain to animals, the slaughtering has to be effected in such a way that unconsciousness is instantaneous and death occurs almost instantaneously.
Why is kosher meat salted?
Kosher meat isn't "juicy" like brined meat at all; in fact, all other things being equal, it will come out much drier and tougher than unkosher meat, because in the process of drawing out blood (the reason for salting in kashering), a good deal of moisture is drawn out as well.