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Animal Sciences Group Report

Between May and July 2008 the Animal Sciences Group of Wageningen(UR (WUR(ASG) performed ammonia and methane volatilization measurements from walking floors in a dairy house equipped with the Comfort Slat Mats from ICE Comfort Slat Mats Ltd.. Ammonia is formed from urea (present in urine) by the enzyme urease (present in faeces and with faeces contaminated surfaces) . The urea is transformed into ammonia (NH3) that is dissolved in water. The dissolved ammonia can emit to the air. Urease activity, urea concentration, urinate patterns and quantities, size of contaminated area, temperature and air velocity are factors in the ammonia forming and emission process. Because ammonia lead to acidification, Dutch legislation states maximum emission levels from dairy houses. New systems need to be developed to combine ammonia emission reduction with acceptable animal welfare.

Original Report Available here (pdf) ( See 6th to 9th pages for English Version) , Please click here to know more about the Animal Sciences Group Wageningen UR,

Between Oct 2009 & June 2010 Urease tests were carried out according to test protocol urease activity MDV.The tests were preformed at the Waiboerhoeve experimental dairy farm of Wageningen UR at Lelystad. It was concluded that :

- The urease activity on Comfort Slat Mats is significantly lower ( approx 90%) than on traditional concrete slat.

- This reduction is more than the threshold of 66% reduction, required to be recognized as a promising ammonia reduction measure within the Dutch MDV-system for dairy housing.