This is why you crave beef: Inside secrets of Big Meat’s billion-dollar ad and lobbying campaigns

In 2011, in the U.S. alone, the annual sales of meat were worth $186 billion. 
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Selling meat with advertising comes with a few simple rules of thumb. “Don’t show animals” is a major one. A study done in Europe found out that it’s better to avoid using any photos or even drawings of cows, pigs, or chickens, no matter how cute.
http://www.salon.com/2016/04/03/this_is_why_you_crave_beef_inside_secrets_of_big_meats_billion_dollar_ad_and_lobbying_campaigns/