| Autor: |
Samuel Quintero-Herrera, Azucena Minerva García-León, José Enrique Botello-Álvarez, Alejandro Estrada-Baltazar, Joaquim E. Abel-Seabra, Alejandro Padilla-Rivera, Pasiano Rivas-García |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Cleaner Environmental Systems, Vol 2, Iss , Pp 100035- (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2666-7894 |
| DOI: |
10.1016/j.cesys.2021.100035 |
| Popis: |
Livestock feed production for the intensive dairy industry has a significant environmental impact. This study evaluated the potential to reduce the environmental impacts of milk production in Guanajuato, Mexico, by incorporating broccoli stems (BS), an abundant agro-industrial waste product with high nutritional value, into dairy cattle feed. The potential reduction of environmental impacts from adding BS to cattle diet formulation was estimated using a life cycle assessment and a linear programming model which considered nutritional requirements as constraints. Two scenarios for milk production were considered: an optimized conventional diet and an optimized diet including BS. The results indicated that incorporating BS in cattle feed could reduce greenhouse gas emissions by 118 g CO2 eq kg−1 fat-and-protein corrected milk (FPCM and agricultural land occupation by 0.002 m2a kg−1 FPCM but increased fossil depletion by 4 g oil eq kg−1 FPCM. BS can replace 11.1% of conventional feeds and maximize the incorporation feeds with low environmental impacts in the diet, such as alfalfa hay and maize silage. A sensitivity analysis of the economic allocation showed that the maximum price of BS to remain environmentally viable was 19.28 USD t−1 on a fresh matter basis. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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