Advertise

Feed trees to sheep to cut greenhouse gases, study suggests - Game & Wildlife Conservation Trust

Introducing tree leaves to a sheep’s diet could play an important role in reducing harmful greenhouse gas emissions, suggests research presented at this today's Intercropping for Sustainability conference.

Scientists from the Game & Wildlife Conservation Trust (GWCT) monitored four groups of six Aberfield x lambs, half of which were fed around 200g of goat willow leaves each per day. When their urine patches were monitored, they found significant reductions in both nitrous oxide and carbon dioxide in those groups which fed on willow leaves. The work, part-funded by the Woodland Trust, also found lower emissions of ammonia from urine patches where lambs were fed willow.

While cutting branches to feed to livestock is labour-intensive, a move towards agroforestry with livestock (also known as silvopasture) would allow the direct browsing of coppiced trees if livestock access is managed to ensure sustainability. The use of tree fodder as an alternative source of food during periods of drought may become increasingly relevant as the climate changes, but these results suggest that a supplementary benefit of incorporating willow into grazing ruminant systems may be a contribution to climate change mitigation, as well as air quality improvement.

Defra has recently made it clear that agroforestry is eligible for support through the Basic Payment Scheme (BPS), including both silvoarable (trees planted at wide spacings and intercropped with a cereal or bio-energy crop) and silvopasture (trees combined with forage grassland and livestock production). The Committee on Climate Change estimates that agroforestry could result in carbon emissions savings of 5.9 MtCO2e per year by 2050, approximately 13% of the total current emissions from the agriculture sector.

More on:

Built by Jack Barber in Whitby, North Yorkshire. Visit Herbal Apothecary for herbal practitioner supplies, Sweet Cecily's for natural skincare, BeeVital for propolis health supplements and Future Health Store for whole foods, health supplements, natural & ethical gifts.