cows on farms live about 2 years? and they weight about 500kgs?
i can't even..
Yup... and those chickens I referred to were between 2 and 4 months old at time of slaughter. It's wrong... when I was growing up we had land, and had a shed full of chooks who would do all the usual happy chook stuff during the day and we'd lock them up at night so the foxes didn't get it. They took twice the time to reach the size of factory farm birds... and people seem happy to put that stuff in their stomachs.
More on the water thing: when I worked for the poultry farming contractor we did a number of factory farm shed clean up jobs. When it got to the pressure-washing stage, the water use was astronomical. Maths time again:
The 2500psi diesel pump used 14 litres of water per minute. 14x60= 840L per hour.
8 hours in the day = 6720L per day
5 days to wash the shed = 33600L per week
Multiply by four pressure washers = 134,400L of water used to wash the shed.
Divide that by the 25,000 birds who lived in the shed for only one year = 5.376L of water to clean up after each chicken. Doesn't sound like much, until you take that whole figure again and multiply it by the 8 sheds that were on that ONE FARM... and it's over 1 megalitre again, for cleaning up after twelve months' worth of animal abuse.
That water would be far better off being dumped on a lentil crop, eh folks?