As a consequence of the increase in the demand for proteins, above all in developed countries, meat consumption accounts for 60% of the protein diet. Over the last 20 years, meat production has increased by 127%, with the pig sector showing the way.
In Spain today, the meat production sector is one of the largest in the food industry, demonstrated by the fact that of the 77,810 million euros spent on food in Spain in 2005, 21.4% to meat and its derivatives, well ahead of sectors such as fish (13.3%) and milk products (10.7%). The average national consumption of meat and meat products in 2005 was greater than 65.8 kilos per person, an increase of 0.7% on 2004

猪肉消费，粪便转化成能源和生物发肥！污染是可以控制的，猪还是要养的，猪肉还是要吃的。