גְּמַלִּ֧ים מֵינִיק֛וֹת וּבְנֵיהֶ֖ם שְׁלֹשִׁ֑ים פָּר֤וֹת אַרְבָּעִים֙ וּפָרִ֣ים עֲשָׂרָ֔ה אֲתֹנֹ֣ת עֶשְׂרִ֔ים וַעְיָרִ֖ם עֲשָׂרָֽה׃
тридцать верблюдов и их жеребят, сорок коров и десять быков, двадцать ослов и десять жеребят.
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.