Bibliographic citations
Salas, C., (2022). Emisión de metano entérico por vacas lactantes y secas en pasturas ryegrass/trébol en zona altoandina peruana [Universidad Nacional Agraria La Molina]. https://hdl.handle.net/20.500.12996/5374
Salas, C., Emisión de metano entérico por vacas lactantes y secas en pasturas ryegrass/trébol en zona altoandina peruana []. PE: Universidad Nacional Agraria La Molina; 2022. https://hdl.handle.net/20.500.12996/5374
@mastersthesis{renati/244964,
title = "Emisión de metano entérico por vacas lactantes y secas en pasturas ryegrass/trébol en zona altoandina peruana",
author = "Salas Riega, Catherine Yasmin",
publisher = "Universidad Nacional Agraria La Molina",
year = "2022"
}
The objective of the study was to determine the enteric methane emissions from lactating and dry cows fed on rotational grazing on ryegrass / clover with supplementation of oat and vetch forage in the Andes of Peru. Sulfur hexafluoride (SF6) tracer gas methodology was used to determine enteric methane emission; the external marker titanium dioxide (TiO2) to determine the production of feces and the protein in feces was used to estimate the digestibility of the food. Enteric methane emissions from 5 lactating cows (VL) and 6 dry cows (VS) Brown Swiss were 358.5 ± 8.0 and 337.4 ± 7.5 gCH4 / cow / day for VL and VS, respectively (p > 0.05). The conversion factor from gross energy to methane (Ym ;%) was 9.7 ± 0.2 for VL and 9.6 ± 0.1 for VS. The enteric methane yield per kilogram of organic matter intake was 32.5 ± 0.8 gCH4 / lactating cow / day and 32.2 ± 0.8 gCH4 / dry cow / day (p > 0.05) and the emission per kilogram of metabolic live weight for lactating cows was 3.1 ± 0.2 g CH4 / kg PV0.75 and for dry cows 2.9 g ± 0.1 CH4 / kg PV0.75 (p > 0.05). It was concluded that there is no difference in enteric methane emissions from lactating cows and from dry cows measured with the SF6 tracer gas technique
This item is licensed under a Creative Commons License