2 research outputs found
LIFE BEEF CARBON: a common framework for quantifying grass and corn based beef farms’ carbon footprints
peer-reviewedEurope’s roadmap to a low-carbon economy aims to cut greenhouse gas (GHG) emissions 80% below 1990 levels by 2050. Beef
production is an important source of GHG emissions and is expected to increase as the world population grows. LIFE BEEF CARBON
is a voluntary European initiative that aims to reduce GHG emissions per unit of beef (carbon footprint) by 15% over a 10-year
period on 2172 farms in four large beef-producing countries. Changes in farms beef carbon footprint are normally estimated via
simulation modelling, but the methods current models apply differ. Thus, our initial goal was to develop a common modelling
framework to estimate beef farms carbon footprint. The framework was developed for a diverse set of Western Europe farms
located in Ireland, Spain, Italy and France. Whole farm and life cycle assessment (LCA) models were selected to quantify emissions
for the different production contexts and harmonized. Carbon Audit was chosen for Ireland, Bovid-CO2 for Spain and CAP’2ER for
France and Italy. All models were tested using 20 case study farms, that is, 5 per country and quantified GHG emissions associated
with on-farm live weight gain. The comparison showed the ranking of beef systems gross carbon footprint was consistent across the
three models. Suckler to weaning or store systems generally had the highest carbon footprint followed by suckler to beef systems
and fattening beef systems. When applied to the same farm, Carbon Audit’s footprint estimates were slightly lower than CAP’2ER,
but marginally higher than Bovid-CO2. These differences occurred because the models were adapted to a specific region’s production
circumstances, which meant their emission factors for key sources; that is, methane from enteric fermentation and GHG emissions
from concentrates were less accurate when used outside their target region. Thus, for the common modelling framework, regionspecific
LCA models were chosen to estimate beef carbon footprints instead of a single generic model. Additionally, the Carbon
Audit and Bovid-CO2 models were updated to include carbon removal by soil and other environmental metrics included in CAP’2ER,
for example, acidification. This allows all models to assess the effect carbon mitigation strategies have on other potential pollutants.
Several options were identified to reduce beef farms carbon footprint, for example, improving genetic merit. These options were
assessed for beef systems, and a mitigation plan was created by each nation. The cumulative mitigation effect of the LIFE BEEF
CARBON plan was estimated to exceed the projects reduction target (−15%)
Extraction industrielle de protéines et de pigments chez la luzerne : état des lieux et perspectives
L’extraction industrielle de protéines et de pigments chez la luzerne permet d’obtenir à partir des feuilles de cette légumineuse un concentré protéique riche en pigments et en acides gras oméga 3. Ce process de pointe reste moins énergivore que la déshydratation classique, même en prenant en compte les importantes économies énergétiques de la filière de déshydratation de fourrages de ces deux dernières années. Aujourd’hui, les débouchés principaux de ce concentré sont le marché de matières protéiques chez les herbivores, celui des pigments en aviculture ainsi que le marché des produits riches en acides gras oméga 3 pour les polygastriques.Industrial extraction of proteins and pigments from alfalfa makes it possible to obtain from leaves of this forage legume protein concentrates with a high content in pigments and omega-3 fatty acids. The high tech process is less energy consuming than the classical dehydration process, even when considering the large energy savings made for forage dehydration during the last two years. Today, the main commercial outlets for this concentrate are the market of protein concentrate for herbivores, the one of pigments for poultry production and also the market of omega-3 rich feeds for ruminants