You can be an animal rights advocate, or you can be a regular meat eater. You can't be both. Choose.
I believe you can advocate for animal rights and still eat meat....just as you can advocate for justice and work at the top floor of the justice Department... Humans have the wonderfully convenient capacity for hypocrisy, cognitive dissonance and diabolical duplicity.
Joking aside, "rights" can mean anything to anyone. For the most part even our most cherished human rights are more guidelines than absolutes.
From the perspective of a mindful meat eater "animal rights" means good animal husbandry. Insuring a quality standard of life for the animals raised for meat, while they live, and giving them a quick death without prolonged and cruel suffering, when they are harvested.
There is also a more eastern perspective to consider that denies the separation from the self and the outside world, so to kill and consume life, is to kill and devour a part of your self....This view goes way beyond the limited notions of individual rights, and chooses to focus more on respecting the interconnectedness between self and other, human/animal, or predator/prey. Violation of our food animals basic "humane" living standards will give rise to negative Karma in the flesh, and will have to be payed for with future negative Karma, by those who blindly feed upon their own cruelty...
For me Humane is a subjective term, in which the individual uses human judgement to decide what conditions are conducive for maximum health and minimal suffering, of another being. Being humane in regards to livestock is to put yourself in the animals position?? For example... If you were a Sheep in a shepherd's flock, you wouldn't have any of these high falutin thoughts, or agony over injustice.... so what would be considered human to Ewe would be much different from what is humane to me.
If I were a sheep that was going to be eventually slaughtered and eaten... I would hope that I was given good pasture to eat, fresh water, protection from wild beast, the ability to move free...to spend what short time I have without suffering or trama....spending a good many beautiful days grazing, breeding, ruminating and bleeting as sheep do...blissfully unaware of the hungry reapers watch.