Enteric Methane Emission Factor for Dairy Farming in Peru
Melisa Fernandez,
Eduardo Fuentes Navarro,
Mario Agustín Viera Valencia,
Javier Llacsa,
William Leoncio Carrasco Chilón,
Wilman Altamirano,
Gelver Romero Delgado,
Richard Ayala,
Jorge Washinton Vela-Alvarado,
Jorge Luis Zegarra Paredes,
Isabel Cristina Molina-Botero,
Carlos Gómez
Affiliations
Melisa Fernandez
Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina S/N., Lima 15024, Peru
Eduardo Fuentes Navarro
Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina S/N., Lima 15024, Peru
Mario Agustín Viera Valencia
Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina S/N., Lima 15024, Peru
Javier Llacsa
Facultad de Agronomía y Zootecnia, Universidad Nacional de San Antonio Abad del Cusco, Av. De la Cultura, Nro. 733, P.O. Box No. 921, Cusco 08000, Peru
William Leoncio Carrasco Chilón
Instituto Nacional de Innovación Agraria, Jr. Wiracocha s/n, Baños del Inca, Cajamarca 06001, Peru
Wilman Altamirano
Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina S/N., Lima 15024, Peru
Gelver Romero Delgado
Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina S/N., Lima 15024, Peru
Richard Ayala
Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina S/N., Lima 15024, Peru
Jorge Washinton Vela-Alvarado
Facultad de Ciencias Agropecuarias, Universidad Nacional de Ucayali, Carretera Federico Basadre Km 6.2, Pucallpa 250101, Peru
Jorge Luis Zegarra Paredes
Facultad de Ciencias e Ingenierías Biológicas y Químicas, Universidad Católica de Santa María, Urb. San José s/n Umacol-lo, Arequipa 040101, Peru
Isabel Cristina Molina-Botero
Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina S/N., Lima 15024, Peru
Carlos Gómez
Facultad de Zootecnia, Universidad Nacional Agraria La Molina, Av. La Molina S/N., Lima 15024, Peru
The objective of this study was to determine the enteric methane (CH4) emission factor (EF) at the national level for Peruvian dairy cattle following the IPCC Tier II (2006, 2019) methodology. Data were collected from seven regions of Peru and classified according to the type of feeding as intensive, semi-intensive or extensive. It included farm information (geolocation) and livestock information for two seasons of the year. At the national level, lactating cows obtained the highest EF with 117 kg CH4/head/year, followed by heifers from 15 to 24 months of age (91 kg), non-lactating cows (74 kg), heifers from 12 to 15 months of age (67 kg), calves (62 kg) and pre-weaned calves (16 kg). Additionally, the highest EF was reported for lactating cows in the intensive system (151.8 kg CH4/head), which is 46.8 kg CH4/head more per year than that reported in the semi-intensive and extensive systems in the same animal category. The combined uncertainty in all animal categories was low to very low (between 9.4 and 18.72%), except for that of lactating cows, which was low to medium (22.24 and 26.72%). These results allowed us to find the EF that exerts the most pressure according to the level of intensity in Peruvian dairy farming.
