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Greener fats for livestock? Evaluating the sustainability of dietary Hermetia illucens oil in dairy cow diets
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Abstract
This study applies Life Cycle Assessment to evaluate the environmental sustainability of using Hermetia illucens oil (HIO) instead of hydrogenated palm fat (HPF) in dairy cow diets. One kilogram of fat- and protein-corrected milk (FPCM) was chosen as the functional unit, and a gate-to-gate approach defined the system boundaries. Primary data were collected during an experimental trial conducted using Valdostana Red Pied cows. Enteric methane emissions were both measured in vitro and estimated using the IPCC model. Results showed that HIO reduces climate change impact from 1.11 to 0.99Â kg CO2 eq/kg FPCM (â11%), mainly due to lower enteric methane emissions, as measured in vitro. This reduction can be attributed to the high concentrations of lauric and myristic acids in HIO, which are known to possess methane-suppressing effects. Contribution analysis revealed that enteric methane accounted for 63% of the climate change impact, followed by concentrate feed, which was the main hotspot in most other categories. Despite slightly higher resource use (fossils: +7.1%; minerals and metals: +5.5%), the overall environmental burden was 3.98% lower with HIO. The analysis using the IPCC model for estimating emissions did not report differences between the two treatments but confirmed a reduction in the overall environmental impact when using HIO (â2.26%).
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Supplementary Materials
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 281 | 281 | 70 |
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| PDF-Downloads | 22 | 22 | 0 |
Greener fats for livestock? Evaluating the sustainability of dietary Hermetia illucens oil in dairy cow diets
in Journal of Insects as Food and FeedSearch for other papers by M. Zoli in
Current site
Google Scholar
PubMed
Search for other papers by L. Rastello in
Current site
Google Scholar
PubMed
Search for other papers by S. Colombini in
Current site
Google Scholar
PubMed
Search for other papers by J. Bacenetti in
Current site
Google Scholar
PubMed
Search for other papers by M. Gerbelle in
Current site
Google Scholar
PubMed
Search for other papers by A. Galli in
Current site
Google Scholar
PubMed
Search for other papers by C. Trespeuch in
Current site
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PubMed
Search for other papers by L. Gasco in
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PubMed
Search for other papers by M. Renna in
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Abstract
This study applies Life Cycle Assessment to evaluate the environmental sustainability of using Hermetia illucens oil (HIO) instead of hydrogenated palm fat (HPF) in dairy cow diets. One kilogram of fat- and protein-corrected milk (FPCM) was chosen as the functional unit, and a gate-to-gate approach defined the system boundaries. Primary data were collected during an experimental trial conducted using Valdostana Red Pied cows. Enteric methane emissions were both measured in vitro and estimated using the IPCC model. Results showed that HIO reduces climate change impact from 1.11 to 0.99Â kg CO2 eq/kg FPCM (â11%), mainly due to lower enteric methane emissions, as measured in vitro. This reduction can be attributed to the high concentrations of lauric and myristic acids in HIO, which are known to possess methane-suppressing effects. Contribution analysis revealed that enteric methane accounted for 63% of the climate change impact, followed by concentrate feed, which was the main hotspot in most other categories. Despite slightly higher resource use (fossils: +7.1%; minerals and metals: +5.5%), the overall environmental burden was 3.98% lower with HIO. The analysis using the IPCC model for estimating emissions did not report differences between the two treatments but confirmed a reduction in the overall environmental impact when using HIO (â2.26%).
| Insgesamt | Letzte 365 Tage | In den letzten 30 Tagen | |
|---|---|---|---|
| Aufrufe von Kurzbeschreibungen | 281 | 281 | 70 |
| Gesamttextansichten | 9 | 9 | 0 |
| PDF-Downloads | 22 | 22 | 0 |
