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Garth Pig Stockmanship Standards

Air Pollutants

Section: Stockmanship Standards

Air Pollutants

Air Pollutants
Gas Chemical Formulae COSHH
Limit ppm
(8 Hours)
Limit ppm
(10 Mins)
Effects of High Exposure
Ammonia NH3 25 35 200 ppm sneezing, salivation and appetite loss. 30 ppm some respiratory signs, reduces mucus removal
Carbon Monoxide CO 50 300 Abortion in pregnant sows
Carbon Dioxide CO2 5000 15000 100,000 narcotic used in slaughterhouses
Hydrogen Sulphide H2S 10 15 20 ppm appetite is reduced and the animals express a fear of light and are nervousness. Sudden exposure to 400 ppm is lethal. Low concentrations smell of rotten eggs, high concentration no smell.

You do not need expensive detectors for ammonia

Concentration NH3 Typical Human Effects
Below 5 ppm No effect
5 to 10 ppm Detect its smell
10 to 15 ppm Causes mild eye irritation
Above 15 ppm Causes eye irritation and tear flow


Air must contain less than 10 mg/m3 of inhaled dust

Respirable dust particles are 1.6 to 3 ?m in size. Above this size the particles are removed by the upper respiratory tract, below, they blow in and out of the entire respiratory tract.

Buy Pig Stockmanship Standards Extracted from Garth Pig Stockmanship Standards*
written by Dr John Carr.

You can buy this book HERE
*Published by 5M Enterprises Limited

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