Answer:
Ammonia
Explanation:
As microbes begin decomposing the waste, ammonia is released, making manure and urine a primary source of ammonia (NH₃). Therefore, major sources of NH₃ emissions from animal feeding operations are animal buildings, manure storages, and land application of manure (Figure 1)
Ammonia is toxic to the body. Animals that live in water excrete their waste in ammonia (aqueous) form because it is less toxic when diluted. However, land animals need to convert the ammonia to a less toxic product such as urea before excretion. Ammonia is formed through deamination of amino acid.
