&quot;Some of the company’s prized purebred birds can now add a pound of weight for every 1.2 pounds of feed consumed&quot;<p>That&#x27;s great news. Also compared to cows, chickens emit much less methane and other greenhouse gases, especially if their manure is handled properly. Not to mention they&#x27;re working on breeding to improve that. And given it takes only ~ 30 days to raise a chicken, that reduces overall energy consumption running the farm.<p>But I think WSJ understated how healthy a vegan diet is, aside from lacking B-12.