From the Mongol Embassy website:
In their many years of nomadic life, the Mongols have developed their own specific techniques of handling livestock. One technique employs toig, a special coaxing word, which is uttered or rather sung when a ewe is being coaxed into accepting a rejected lamb. The word toig is used with sheep only; for goats, the word is choig; for camels, hoos. In the latter instance, the morin huur (horsehead fiddle) accompanies the singing. While including a ewe to suckle a rejected lamb, the following words, for example, are sung:
The mandarin duck has arrived, The mugwort has sprung up, your udder is full,
Keeping it away, why do you reject it? Toig, toig, toig
This is sung gently, over and over again, until the ewe suckles the lamb. When a mother camel is being coaxed into accepting a rejected or strange calf, it is said to break into tears at the gentle sound of hoos and the enchanting melody of the morin huur, sung and played by someone skilled in the art of casting spells on animals. The words are more than simple calls and have become absorbed into poems and songs.