anaerobic compost

I have a lot of cow manure mixed with hay and straw that has been sitting since September.  I tried to spread it out and have my chickens turn it, but they didn't cooperate.  It is quite wet and matted, so I was hoping to add fresh straw/manure/urine from our goats. I layered the old cow manure with the fresh straw in a pile.  My concern is that the old manure has a lot of anaerobic bacteria in it, so I wanted to reactivate it with the fresh material, and turn it the next several weeks.  I checked the temperature and it is not heating up at all.  I started a second pile and it is hot with basically the same material, but sitting in full sun, while this is shaded 1/2 of the day.  
1.  Can I just pull it apart and use the composted material safely on my garden?
2. If not, any ideas on how to reactivate it?  
3.  How do I tell if the material is safe to use without a microscope?

Thanks!

1 - I would pull it apart like you suggest, but leave the manure uncovered, and "turn" it every few days like you would a compost pile, it's probably already used a fair bit of nitrogen up so that is probably why it isn't hot composting (assumption) however the matted and wet combination is causing layers of anaerobic conditions to exist, so as long as it is wet and matted, you would just be throwing in negative microbes for your garden, so i would suggest just taking the straw off and just fluffing it every so often in the sun (maybe cover with a tarp on days/nights where it is going to rain/be wet) this should dry it out enough and add enough oxygen to it for the anaerobic conditions to be mitigated, and the "smell" should start going more pleasant. The easiest way to tell good composted material from bad without a microscope is the smell, so once you have more of a "forest floor" odor to it, I would think at that point it would be fine to add without issue (if there is still some straw mixed in you could turn it in if you wanted to, if you have any non-composted wood chips in it i would refrain from turning that it though)

2 - if you wanted to "reactivate" it, I would suggest making a new compost pile, and mixing bits of that one in as you build it lasagne(sp) style, this should spread it out enough where it can be incorporated into that new pile and hot compost (you will probably not be able to do it with just that material as it's nitrogen has probably off gassed or  been used up a bit already)

3 - smell is what I rely on the most, when making compost, use the wafting technique at first and if it's strong enough either pleasant or foul for you to pick up the scent with the wafting method (standing a bit back and just wafting air towards your face with your hand) then that indicates a "strong" presence, if you have to get your face nice and close to smell a foul smell, it's gone anaerobic, but is probably salvageable if you turn it then.

Not an expert or anything, just what I've learned from this site and others and what I think might help you, best of luck.

First time poster, take with grain of salt

I wouldn't use it until you get the aerobic microbes working again, and kill off the anaerobic microbes.

Solution: turn the pile with a generous new amount of browns: straw, sawdust, dried leaves, shredded paper.  Anything like that will take care of the stink and will reactivate the compost, almost overnight.  After 3 days, turn it again.
Within a week you'll be able to use that compost around your garden.