Aged manure from mammals is fine. The Compost forum will have more info.

Cow manure is great for gardens - just make sure you age it and / or compost it first :)

My veggie garden is 100% Cow Manure and Leaves :)

Any poop from grass/grain eating animals is fine. Poultry manure is supposedly very good. I had great luck with what came from my pet rabbit. Just remember that it cannot be used fresh from the animal for it will burn the plants. Also, for pasture grazers the manure will be high in weed seeds which pass through their bodies undigested and thus ready to spring to life in your garden. So compost the stuff first.
Books talk about making a manure "tea" as well, but the process sounds repulsive and I've never known anyone to really try it.

Any animal manure is fine just so long as it is well aged or composted first. Using fresh in the produce garden is potentially hazardous.

As pointed out above, you'll find much more info on use, application rates, and safety issues in the many discussions on it over on the Soil, Compost, and Mulch forum here. Just search 'manure' there for more info than you would ever want to know. ;)

Dave

My parents use cow manure on everything they grow. They just get the older stuff from the farmer down the street.

You can compost (or age) fresh cow manure by tucking it under a plastic tarp for 4 months or so--particually in warm weather. It will dry and bake up just like a hot compost pile.

Compost tea is easy to make and does not have to be a disgusting process: place fresh cow or horse manure in a burlap sack and place it in a plastic garbage can and fill the container with water. It will only take a day or two for the water to turn to the color of tea--weak or strong. Fill your watering can with the "tea" and sidedress--side water--your plants. You can vary the size of the sack and container as you like. You can use an old pillow case if you don't have a burlap sack. You can make a compost tea the same way.

Compost and manure tea is rich in major and minor nutrients and trace elements. You can't buy a better complete fertilizer.

Here is a link that might be useful: HarvestToTable.com

My experience with manure tea: The ball of manure became filled with air bubbles, floated up and lifted one side of the lid covering the bucket. Then flies went into the opening and I could not see the lifted lid, as it was on the far side of the bucket, but could see the huge flies very well, the size of cargo planes. I could not stir the mixture as I could not stand the smell, but after weeks and weeks, it is not bad at all and I use a scoop of it once in a while on my veggie patch.

I like sheep manure the best but age as everyone else has said.

This brand makes Cow Poop their marketing strategy! Black Kow! See link below...

I think any herbivore manure would be great...you wouldn't want to use carnivore poo... on a different note...

I once had to get tiger poop from the big cat rescue operation down the street to deter the Florida Panthers from trying to get to my chickens. The tiger guy said the animals can smell when a bigger predator has been there and then leave. He must have been right because I didn't have trouble with critters for a long time. All I did was place a plastic bag of tiger poo at each corner of the chicken pen...

Here is a link that might be useful: Black Kow website

Rooster manure has the highest N content of any you'll find produced in the US. Don't over doo it with poo. Especially if you live in an area with low annual precipitation, poo can have a high salt content that can be injurious when leached into soil. The last recommendations I can remember (that's not saying much) out of an extension service for poop application was 3-9 tons/acre = 1/4 - 3/4 lb/sq ft.. Check with your local extension office.