Effects of different fiber levels of energy feeds on rumen fermentation and the microbial community structure of grazing sheep

We supplemented grazing sheep in saline cultivated grasslands in the northwest inland arid zone with different fibre levels of energy feeds and investigated their effects on body weight gain, rumen fermentation parameters and rumen microbiota of grazing livestock in cultivated grasslands and analyzed their causes, with a view to providing a theoretical basis for the fattening of grazing sheep and increasing farmers' economic income in the region.