Krishna always taught about importance of cows through his actions. His love for cows is also seen from his pastimes he performed in Vrindavan. Krishna is also known as “Gopal”- “one who brings satisfaction to the cows”.
Krishna would take the cows in the forests and would even milk cows while in he lived in Vrindavan. He treated cows with utmost care. When he would play flute cows stopped eating grass and cry incessantly. Mother Yashoda would apply Gomutra, Goraj on Krishna, thinking that it will save Krishna from demons.
When Krishna went to Mathura, cows would not eat anything; they were deeply saddened by krishna’s absence. Kansa-the king of Mathura sent Akrur to Vrindavan to bring Krishna & Balram to Mathura. Akrur was gifted a cow by Krishna during that meeting. Krishna would gift cows to bramhins, saints when he was in Dwarka. Moreover, in Dwarka Krishna created deities of cows and would often offer his obeisance to them.
At the end of his Avatar Krishna told his beloved friend Uddhava that cow’s worship is equal to his worship. Krishna told Uddhava that whatever things I could do, whatever demons I could kill, was just because I served cows and I got this power by simply worshiping and serving a cow. He attributed credit of his deeds to cows.
“Panchagavya means all the things that a cow yields namely curd, milk, ghee, gomutra and cow dung. Panchagavya is used in all dharmik vidhi including (Yagya).
Bhagwat Geeta tells us about the importance of being in”Satva guna”, Satva guna brings us peace and happiness and worshiping cow increases our satva guna. Drinking cow milk blesses us with Divine consciousness and Divine energy and fills our body with transcendental qualities (sattvikta).