Cows are sacred in India – applied religion

During the consumer frenzy of christmas, there is always a debate on the sense and nonsense of religious rituals.

But many religious rituals and rules, have made ​​sense in their time and some still make sense:

Holy cow!

My data base:
Milk Calories per liter: 670
Milk per cow per day: 11 Liter
Life expectancy cow: 15 Jahre
Calories for beef: 702,000

670 kcal/l * 11 l/day * 15 years * 365 days/year = 40,350,750 kcal