Musar к Кохелет 1:9

We are now able to understand an allusion to the future contained in 30,39 in which a procedure used by Jacob to encourage the sheep to give birth to certain skin patterns is described. Rabbi Oshiyah says in Bereshit Rabbah 73,10 that the water the sheep drank was turned into sperm inside of them. How can we understand the remarks of Rabbi Oshiyah which suggest that G–d created a new instrument of impregnating animals, something that had not been created during the six days of creation!? Did not Solomon in Kohelet 1,9 say that there is nothing new added on this planet?