Ed ex@directory wrote:

No, I not no expert scientist or nothing nor read scientific papers. I
am just a gardener. But I see a few articles on the web that says if you
maintain a hot heap then it will kill pathogens.. If you run a cold heap
then these things are not killed off with the heat. Hence my concern.

If there is nothing to kill off, then why worry. Many compost heaps
have diseased plant material that can harm plants. There is a concern
then. But non-caninvore and non-omnivore waste is not a major concern.

The hydrogen sulfide, methane, ammonia, and carbon dioxide given off by
fresh manure are concerns in hot or cold compost heaps. Horse manure is
a solid waste excluded from federal regulation because it neither
contains significant amounts of listed hazardous components, nor
exhibits hazardous properties. C. tetani is reportedly found in equine
manure, but does not represent a source of significant public health
risk. Many common equine helminths (worms, bots, etc.) are pathogenic
to domestic animals but are not pathogenic to man. Generally speaking,
horse guts do not contain the 120 viruses and constituents of concern in
human, dog and cat feces (carnivores and omnivores). Most viruses with
zoonotic potential (animals infecting humans) are not found in horse
wastes.

Pathogens of primary concern are waterborne microorganisms that usually
follow ingestion pathways into the body. Transmission can also occur
through direct oral-fecal exposure. These include Cryptosporidium parvum
, Giardia duodenalis, Campylocbacter spp, Salmonella spp., pathogenic
strains of E. coli, andYersinia spp. By far, C. parvum and Giardia are
the two of most concern because they have very low thresholds of
infectious dose. People infected by these organisms may exhibit a range
of symptoms from mild abdominal discomfort to death, especially among
the very young, elderly, and people with immunologically suppressed
systems. Neither of these organisms can be destroyed easily with
traditional water treatment processes.

So if you use horse manure, make sure the people that gathered it washed
their hands after using a toilet. They and their pets are much more of
a concern than the horse manure itself.

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