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An economic and greenhouse gas emissions evaluation of pasture-based dairy calf-to-beef production systems

Author

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  • Murphy, Brian
  • Crosson, Paul
  • Kelly, Alan K.
  • Prendiville, Robert

Abstract

The objectives of the current study were to investigate the effects of production system on Holstein-Frisian bulls and steers and also to evaluate the profitability and greenhouse gas (GHG) emissions of these production systems. Calves were assigned to one of five production systems; bulls finished indoors on a concentrate ad libitum diet for 200days and slaughtered at 15months of age (15MO); bulls finished indoors on a concentrate ad libitum diet for 100days and slaughtered at 19months of age (19AL); bulls supplemented with 5kg of concentrate dry matter (DM) per head daily at pasture for 100days and slaughtered at 19months of age (19PC); steers supplemented with 5kg DM of concentrate per head daily at pasture for 68days and slaughtered at 21months of age (21MO) and steers finished indoors on grass silage plus 5kg DM of concentrate per head daily for 92days and slaughtered at 24months of age (24MO). All calves were rotationally grazed at pasture, supplemented with 1kg DM of concentrates per head daily, during the first season. With the exception of 15MO all production systems were fed grass silage and 1.5kg DM of concentrate during the winter period and returned to pasture for a second season. The Grange Dairy Beef Systems Model was used to simulate whole-farm system effects of production systems while GHG emissions associated with production were simulated using the Beef Systems Greenhouse Gas Emissions Model. Carcass weight was lowest for 21MO, greatest for 19AL and 24MO with both 15MO and 19PC intermediate. Conformation score was greater for bull (15MO, 19AL and 19PC) compared to steer production systems (21MO and 24MO). Fat score was greatest for 24MO and lowest for both 15MO and 19PC; 19AL and 21MO were intermediate. Concentrate feed costs represented 68, 59, 47, 39 and 39% of the total variable costs for 15MO, 19AL, 19PC, 21MO and 24MO, respectively. The most profitable production system was 19PC, while the least profitable systems were 15MO and 24MO. Greenhouse gas emissions, on a per kg live weight and carcass weight basis were lowest for 15MO and 19AL and greatest for 21MO and 24MO. The current study showed that slaughtering bulls at 19months of age and finishing at pasture was the most profitable production system with moderate GHG emissions.

Suggested Citation

  • Murphy, Brian & Crosson, Paul & Kelly, Alan K. & Prendiville, Robert, 2017. "An economic and greenhouse gas emissions evaluation of pasture-based dairy calf-to-beef production systems," Agricultural Systems, Elsevier, vol. 154(C), pages 124-132.
    • Handle: RePEc:eee:agisys:v:154:y:2017:i:c:p:124-132
    DOI: 10.1016/j.agsy.2017.03.007
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    References listed on IDEAS

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    1. Ashfield, A. & Crosson, P. & Wallace, M., 2013. "Simulation modelling of temperate grassland based dairy calf to beef production systems," Agricultural Systems, Elsevier, vol. 115(C), pages 41-50.
    2. Pelletier, Nathan & Pirog, Rich & Rasmussen, Rebecca, 2010. "Comparative life cycle environmental impacts of three beef production strategies in the Upper Midwestern United States," Agricultural Systems, Elsevier, vol. 103(6), pages 380-389, July.
    3. Morel, Kevin & Farrié, Jean-Pierre & Renon, Julien & Manneville, Vincent & Agabriel, Jacques & Devun, Jean, 2016. "Environmental impacts of cow-calf beef systems with contrasted grassland management and animal production strategies in the Massif Central, France," Agricultural Systems, Elsevier, vol. 144(C), pages 133-143.
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    Cited by:

    1. Taylor, R.F. & McGee, M. & Kelly, A.K. & Crosson, P., 2020. "Bioeconomic and greenhouse gas emissions modelling of the factors influencing technical efficiency of temperate grassland-based suckler calf-to-beef production systems," Agricultural Systems, Elsevier, vol. 183(C).
    2. Kearney, M. & O'Riordan, E.G. & McGee, M. & Breen, J. & Crosson, P., 2022. "Farm-level modelling of bioeconomic, greenhouse gas emissions and feed-food performance of pasture-based dairy-beef systems," Agricultural Systems, Elsevier, vol. 203(C).
    3. McPhee, Malcolm J. & Evered, Mark & Andrews, Todd & Pacheco, David & Dougherty, Holland C. & Ingham, Aaron B. & Harden, Steven & Crean, Jason & Roche, Leslie & Eastburn, Danny J. & Oltjen, James W. & , 2019. "Beef production simulation of nitrate and lipid supplements for pasture and rangeland fed enterprises," Agricultural Systems, Elsevier, vol. 170(C), pages 19-27.
    4. Kearney, M. & O'Riordan, E.G. & Byrne, N. & Breen, J. & Crosson, P., 2023. "Mitigation of greenhouse gas emissions in pasture-based dairy-beef production systems," Agricultural Systems, Elsevier, vol. 211(C).
    5. Henn, Daniel & Humphreys, James & Duffy, Colm & Gibbons, James & Styles, David, 2023. "Improved representation of cattle herd dynamics for bio-physical modelling of pathways to a climate neutral land sector," Agricultural Systems, Elsevier, vol. 212(C).
    6. McGee, M. & Moloney, A.P. & O'Riordan, E.G. & Regan, M. & Lenehan, C. & Kelly, A.K. & Crosson, P., 2023. "Pasture-finishing of late-maturing bulls or steers in a suckler calf-to-beef system: Animal production, meat quality, economics, greenhouse gas emissions and human-edible food-feed efficiency," Agricultural Systems, Elsevier, vol. 209(C).
    7. McGee, M. & Lenehan, C. & Crosson, P. & O'Riordan, E.G. & Kelly, A.K. & Moran, L. & Moloney, A.P., 2022. "Performance, meat quality, profitability, and greenhouse gas emissions of suckler bulls from pasture-based compared to an indoor high-concentrate weanling-to-beef finishing system," Agricultural Systems, Elsevier, vol. 198(C).

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