Hope you didn't think I was jumping all over you either. It's human gene material, yes. It will turn into a fully developed human if allowed to continue growing. But it doesn't have a heart beat, a brain, or anything...(depending on the week of abortion) it's not sentient. Since it's not sentient, and pigs are, at this stage, if you were to kill anything, the zygote would be more moral to kill than the pig. (I personally don't like the idea of killing anything, unless absolutely necessary or for survival, etc...) So, comparing the stages, pigs have more feelings, can feel pain and emotion, they are smarter than dogs, they can learn, they can suffer. A zygote can't do any of that. I can't see that as a "murder" any more than it's murder to drive your car and you hit a bug and it splats on your windshield.
Now, I think it's irresponsible for women to just go and use abortion as a sort of birth control technique. There are far better ways to avoid getting pregnant and other methods of contraception. But, I won't fault them for getting an abortion either. This planet is FAR too over populated and it's getting dangerous. I'll still think shes irresponsible, but she is the one in control, and if she decides to get an abortion, the earlier the better.
I'm not sure if you ever responded the other day to my moral scenario where you can tell throughout the pregnancy (and this hypothetical situation is a case where the parents actually really want to keep the kid, let's presume) so you can tell that the kid is missing something important and it will absolutely die and suffer in a matter of minutes or hours post birth. In this sad and horrible circumstance, even the parents that REALLY wanted to keep their baby....they should abort. It is irresponsible to keep it with these circumstances. All they are doing is causing harm to the baby and themselves. The faster they can end this pregnancy and move on with their lives and try again to have a baby, the better. No need to put themselves through this horrible situation, nor the baby.