Vibeke Lind
Forsker
Biografi
Forfattere
Vibeke Lind Özge Sizmaz Ahu Demirtas Mert Sudagidan Simon Weldon Alice Budai Adam O'Toole Dejan Dragan Miladinovic Grete H. M. JørgensenSammendrag
Biochar, which is the product of biomass pyrolysis, has been suggested as a feed supplement to improve performance in livestock systems and reduce greenhouse gas emissions. The aim of the current study was to investigate in vitro and in vivo potential of biochar to favourably modify rumen fermentation (e.g., an increase in total Short Chained Fatty Acid (SCFA) concentration and a change in SCFA profile), reduce methane emission and increase sheep growth performance. Four concentrates were produced with biochar inclusion of 0, 10, 23 and 46 g/kg DM. The experimental diets for the in vitro experiments consisted of straw and concentrate in a 60:40 ratio and included measurements of total gas and methane (CH4) production, pH, ammonia nitrogen, SCFA, and microbial assays (total bacteria and methanogenic archaea). Two in vivo experiments were performed where the animals received ad libitum forage with 0.4 kg concentrate daily. Experiment 1 investigated the daily DM intake of sheep while experiment 2 investigated daily growth rate and CH4 emission of lambs. The inclusion of biochar had no impact on in vitro total gas production (ml/200 mg DM substrate) (P = 0.81) and CH4 production (ml/200 mg DM substrate) (P = 0.93). In vitro total SCFA concentration increased (P < 0.05) while acetate to propionate ratio (A:P) tended to decrease (P = 0.05) with both doses of biochar. Total bacteria decreased with the highest biochar inclusion in vitro (P < 0.05). Sheep’s DM intake (kg/d) increased when low and medium levels but not when a higher level of biochar was added to the diet (P < 0.001). The inclusion of biochar did not significantly impact the lamb’s daily growth rate (g/d) (P = 0.61) or enteric CH4 emissions (g/kg DM) (P = 0.43). We conclude that biochar supplementation had no favourable impacts on in vitro and in vivo CH4 production or on lamb’s growth rate. Further research with well-characterised biochar is needed to gain a better understanding of the potential of biochar as a feed additive for ruminant livestock.
Forfattere
Martin Komainda Jesus Fernández-Habas Pilar Fernández-Rebollo Johannes Isselstein Mariusz Kulik Vibeke LindSammendrag
Det er ikke registrert sammendrag
Forfattere
Vibeke LindSammendrag
Det er ikke registrert sammendrag
Divisjon for matproduksjon og samfunn
CircAgric - Strategies for Circular Agriculture to reduce GHG emissions
CircAgric-GHG will unravel mechanisms by which farming systems can enhance circularity whist reducing GHG emissions and provide ecosystem services at multiple scales.
Divisjon for matproduksjon og samfunn
DairyMix - Flerkriterievurdering, beslutningsstøtte og styringsverktøy for bærekraftige sirkulære produksjonssystemer i tilknytning til melkeproduksjon
Forskere fra 10 universiteter og forskningsinstitutter i Europa og Latinamerika har gått sammen for å utvikle et beslutningsstøtteverktøy for melkeprodusenter. Formålet er å øke bærekraft og sette fokus på klimavennlige produksjonssystemer som også tar i bruk andre fôrgrøder. Prosjektleder er Professor Barbara Amon fra Leibniz Institute for Agricultural Engineering and Bioeconomy (ATB) i Tyskland. NIBIO bidrar inn i prosjektet med data fra norske fokusbesetninger. I tillegg leder vi arbeidspakke 5.