Are Pasture-Based Systems Key to the Sustainability of Beef Finishing?

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Dr Harry Kamilaris 26 Mar 2021 Reading Time: 3

Profitable and environmentally friendly beef finishing enterprises

In the search for a solution that could satisfy high profitability and sustainable environmental performance, a recent study draws attention towards high input grazing and medium duration beef finishing systems.

Researchers investigated the environmental impact of a range of beef finishing systems, as well as the trade-offs generated between mitigating emissions and increasing farm profitability, using Scotland as a case study.

Findings suggested that pasture-based systems have a central role to play to sustainable beef production systems.

These systems belong to a range of “win-win” realistic scenarios that are found to achieve a balance on a profitable and more environmental-friendly beef production.

Beef production and climate change

The livestock industry is recognised as an important source of greenhouse gas (GHG) emissions linked to climate change. Beef production attracts more attention than since it contributes around 41% of the total sector emissions on a global scale.

The complexity of beef systems means that appropriate carbon mitigating strategies depend on local conditions, requiring tailored entry points to be identified and evaluated.

Modelling approach designed for Scotland

This study combined a bio-economic simulation model focused on temperate grassland-based beef systems with Agrecalc (developed in alignment with IPCC (2006) Tier I and II methodology and is PAS2050 certified) to measure greenhouse gas emissions.

First, the study constructed environmental and economic scenarios for the most common systems currently in Scotland and then explored strategies to address both low profitability and potential GHG mitigation.

The focus was the fattening stage of beef production, comparing different systems and management practices. A “gate-to- gate” approach was adopted, where the main costs concerning the post-weaning period of cattle production until slaughtering the animals were included in the model.

Nevertheless, we need to highlight here that the systems examined here did not include the cow-calf phase, even though it is recognised to have the main impact on the total carbon footprint associated with beef production, regardless of the finishing strategy.

Several factors have been identified as having a key impact on the emissions intensity of production, including the finishing type and diet, the gender of the animals and the duration of the finishing period.

Answers that promote profitability and environmental sustainability

Results on profitability and environmental performance reveal two distinct groups for both steer and heifer systems; one includes the long finishing period systems and the other the short and medium duration systems.

Long period grazing systems have low emissions per animal but score low in profitability with negative net margins in all cases. In contrast, most of the medium and all of the short duration systems were profitable but show higher emissions intensity

Interestingly, despite the higher profitability demonstrated from the intensive systems, medium systems for finishing steers and heifers at 18 and 19 months do score similarly on profitability and reducing GHG emissions.

Research revealed a range of realistic scenarios for high input grazing medium duration beef production systems that managed to achieve a balance on both profitable and more environmentally friendly beef production.

Supporting the case for medium duration pasture-based beef production systems

To further support the case for medium duration grass-based beef finishing systems, other studies on alternative beef forage-based systems have also reported promising results in terms of their potential as mitigation strategies to balance GHG emissions produced, especially for systems with animals grazing on improved pasture and systems employing adaptive multi-paddock grazing.

This observation is especially important for Scotland, where opportunities may be found for finishing systems, where a proportion of grass is included in the diet, resulting in high-value products from grass-fed animals that could potentially offer higher returns.

Well preserved grasslands may also have a positive effect on long-term soil fertility. Plus, promoting pasture-based beef production systems will have wider socio-economic implications in terms of increased rural employment, rural tourism, and recreation by preserving distinctive features of the rural landscape with historic and aesthetic significance, as well as other valuable ecosystems services.

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Dr Harry Kamilaris

Chief Marketing Officer - Agrecalc at SAC Consulting

Reading Time: < 1 minute Harry manages all strategic and operational marketing activities, working closely with research ...

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