It's not like meat would be better - for capitalist reasons, a lot of traditional breeds of cows, pigs and poultry are nearing extinction because production has optimized to a very few select breeds that produce the "most" meat, at the cost of the animal's welfare (especially with chicken that have issues standing upright) and the taste.
And the nutritional value of animal products may be affected, too:
I live in South America. The lard I buy here from local peasants, who 'breed' an old pig race, has a liquid fraction, even in the fridge. This indicates to a high amount of unsaturated fatty acids. The industrial lard is completely solid at that temperature.
