In Midrasch Talpioth (fol. 225d) it says:
"God created them in the form of men for the glory of Israel. But Akum were created for the sole end of ministering unto them [the Jews] day and night. Nor can they ever be relieved from this service. It is becoming to the son of a king [an Israelite] that animals in their natural form, and animals in the form of human beings should minister unto him."
We can quote here also what is said in Orach Chaiim, 57, 6a:
"If pigs are to be pitied when they suffer from disease, because their intestines are similar to ours, how much more should the Akum be pitied when thus affected."(49)
(49) In Taanith (21b) it says: "How much more the Nokhrim since they are similar to Israelites."
http://www.talmudunmasked.com/chapter8.htm
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akum=worshiper of stars and constellations / planets, i.e. a Christian
Akum—This word is made up of the initial letters of the words Obhde Kokhabkim U Mazzaloth—worshippers of stars and planets. It was thus that the Jews formerly styled the Gentiles who lacked all knowledge of the true God. Now, however, the word Akum in Jewish books, especially in the Schulkhan Arukh, is applied to Christians. This is evident from numerous passages:
In the Orach Chaiim (113,8) those who use a cross are called Akum. In the Iore Dea (148, 5, 12), those who celebrate the feasts of Christmas and New Year, eight days afterwards, are called worshippers of the stars and planets:
"Thus if a gift is sent to the Akum, even in these times, on the eighth day after Christmas, which they call the New Year," etc.
see "Chukot Akum or Chukat Ha'Akum".
Nokhrim = strangers, foreigners. This name is used for all who are not Jews, and therefore for Christians.
http://www.talmudunmasked.com/chapter7.htm