Krishan name is Govinda and also Gopal... which means cowherd boy and who takes care of cow and is protector. The cows in Krishan's abode are also a liberated soul as a choice they have made. These cows are called SAURABHI meaning you can milk the cow as many times as you want to and as much milk as you want to. We see many picture of lord with cow and here he is symbolizing that if we provide what we can offer as service to the people as much as we can, we can be close to Krishna. The condition is, like saurabhi there should be the determination and willingness to serve other by own capacity without expectation like the saurabhi cow be humble like cow have patience like cow.