Estructura del pastizal, producción de leche y emisión de metano en vacas lecheras en pastoreo

The research was carried out at the IrquisExperimental Farm belonging to the University of Cuenca, Azuay province, Ecuador, at 2,663 meters above sea level with the following coordinates 1773890 E and 9659302 N, it is temperate climate, temperature between 8 and 14 ° C, relative humidity 80% and a rainfall of 639 mm / year. The research was carried out during 16 weeks, between the months of December 2018 to March 2019. The animal response was determined as milk production based on three botanical composition patterns, with a predominance of Kikuyo, in another with a predominance of Ryegrass and in another with an Association of these and White Clover. The structure of the grasslands was determined. The availability of forage was similar between the different types of grasslands, due to the time of study and that the components measured in the grassland had a compensatory effect, likewise the utilization in the Kikuyo pastures and the Ryegrass-Treból Association was better compared to Ryegrass. Milk production was higher in Kikuyo, most likely due toits better structure.