וַיַּצֵּ֗ג אֶת־הַמַּקְלוֹת֙ אֲשֶׁ֣ר פִּצֵּ֔ל בָּרֳהָטִ֖ים בְּשִֽׁקֲת֣וֹת הַמָּ֑יִם אֲשֶׁר֩ תָּבֹ֨אןָ הַצֹּ֤אן לִשְׁתּוֹת֙ לְנֹ֣כַח הַצֹּ֔אן וַיֵּחַ֖מְנָה בְּבֹאָ֥ן לִשְׁתּֽוֹת׃
他把那些剝出條紋的枝子插在水溝裡，就是羊群來喝水的飲水槽中，正對著羊群；羊群來喝水的時候，就發情受孕。
Rashi
ויצג AND HE SET — In the Targum it is rendered by ודעיץ which signifies in the Aramaic language sticking in and inserting. It occurs many times in the Talmud: (Shabbat 50b) “if he stuck it in (דצה) and pulled it out”; (Chullin 93b) “he stuck (דץ) something into it”, where דצה is the same as דעצה, being really a contracted form of it.
Rashbam
ויחמנה, the word has a similar construction as Samuel I 6,12 וישרנה הפרות, “the cows went straight ahead,” where a feminine mode and a masculine mode is combined. [the letter י at the beginning of the word signaling a masculine mode, and the letters נה at the end signaling a feminine mode. Ed.] Similar unusual constructions are found in Daniel 8,22 ארבע מלכיות מגוי יעמדנה, or Ezekiel 37,7 ותקרבו העצמות עצם אל עצמו. In all of these examples the verb is in a partially masculine and partially feminine mode.
Radak
ויצג את המקלות, he positioned them at the water troughs. This is the meaning of the words