גְּמַלִּ֧ים מֵינִיק֛וֹת וּבְנֵיהֶ֖ם שְׁלֹשִׁ֑ים פָּר֤וֹת אַרְבָּעִים֙ וּפָרִ֣ים עֲשָׂרָ֔ה אֲתֹנֹ֣ת עֶשְׂרִ֔ים וַעְיָרִ֖ם עֲשָׂרָֽה׃
젖나는 약대 삼십과 그 새끼요 암소가 사십이요 황소가 열이요 암나귀가 이십이요 그 새끼나귀가 열이라
Rashi
גמלים מיניקות MILCH CAMELS שלשים THIRTY, ובניהם means AND THEIR COLTS with them — A Midrashic explanation of ובניהם is that it is the same as וּבַנָּאֵיהֶם their builders (those that build them up) i.e., one male for each female. Because, however, it (the camel) is chaste in its ways Scripture does not state this plainly (Genesis Rabbah 76:7) but employs a term from which it may be inferred.