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Poster De Conférence Année : 2015

Ammonia and greenhouse gas emissions from straw-based deep litter systems for dairy cattle fed with contrasting diets

Résumé

The objective of the study is to acquire new knowledge about greenhouse gases and NH3 emissions at the barn level for dairy cows on a straw-based deep litter and fed contrasting diets: a grass-based (fresh and hay, GD) and a maize-based diet (silage and concentrate, MD). Two groups of three Holstein dairy cows in late lactation were housed in two closed and controlled mechanically ventilated rooms, and kept on a straw-based deep litter accumulated under the animals during four weeks. Individual milk yields and dry matter (DM) intake were recorded daily. H2O, NH3, CO2, CH4 and N2O emissions were measured continuously with an infrared photo-acoustic gas analyzer. The diet clearly affected GHG and ammonia emissions. The MD treatment involved higher CH4 emissions mainly because of a higher DM intake while the GD treatment caused greater emissions of ammonia due the higher diet protein content.
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Dates et versions

hal-01210893 , version 1 (02-10-2015)

Identifiants

  • HAL Id : hal-01210893 , version 1
  • PRODINRA : 284126

Citer

Tiago Pansard Alves, Elise Lorinquer, Nadège Edouard. Ammonia and greenhouse gas emissions from straw-based deep litter systems for dairy cattle fed with contrasting diets. International symposium on emissions of gas and dust from livestock. EMILI 2015, Mar 2015, Florianopolis, Brazil. , 2015, EmiLi 2015. ⟨hal-01210893⟩
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