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Pig waste is similar to human waste; filled with bacteria and high amounts of ammonia. At most intensive pig farms, hog waste is kept in large open-air pits called lagoons where waste is broken down by anaerobic bacteria and then sprayed onto crops as fertilizer.
Silage liquor is best treated through prevention by wilting crops well before silage making. Any silage liquor that is produced can be used as part of the food for pigs. The most effective treatment is by containment in a slurry lagoon and by subsequent spreading on land following substantial dilution with slurry.
Boar taint is caused by the accumulation of two compounds – androstenone and skatole – in the fat of male pigs. Androstenone (a male pheromone) is produced in the testes as male pigs reach puberty and gives the meat a urine or sweat flavour, while skatole (a byproduct of intestinal bacteria, or bacterial metabolite of the amino acid tryptophan) is produced in both male and female pigs and ...
Ammonia gas has a strong odor that can be smelled at low levels, below the OSA PEL, but does not have any negative health effects. [39] At higher levels, ammonia is irritating to the body's mucous membranes such as the eyes, nose, mouth, throat and lungs. [39] Particulate matter in pig barns often absorbs ammonia as it floats through the air. [40]
As pH or temperature increases, so does the amount of volatilized ammonia. [15] Once ammonia has been volatilized, it can travel as far as 300 miles, [13] and at closer ranges it is a respiratory irritant. [5] Acidification and eutrophication of the ecosystem surrounding the lagoons could be caused by prolonged exposure to volatilized ammonia. [16]
A fenced slurry pit. A slurry pit (also farm slurry pit, slurry tank, slurry lagoon, and slurry store) is a hole, a dam, or a circular concrete structure where farmers gather all animal waste and unusable organic matter, such as hay, and the run-off water from the washing of dairies, stables, and barns, in order to convert the slurry, over a lengthy period of time, into fertilizer that can be ...
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Soil steam sterilization (soil steaming) is a farming technique that sterilizes soil with steam in open fields or greenhouses. Pests of plant cultures such as weeds, bacteria, fungi and viruses are killed through induced hot steam which causes vital cellular proteins to unfold.