roughage

n.

粗饲料，粗粮，粗糙的原料；

1. It's good for health to eat roughage.
   常吃粗粮有好处。

Effect of Low-Roughage Diets on the Microflora and Lipid Metabolism in the Rumen
Influence of Roughage Level on the Site and Extent of Digestion of Whole Shelled Corn by Beef Steers
Influence of feeding different types of roughage on the oxidative stability of milk
Effect of roughage source and roughage to concentrate ratio on animal performance and rumen development in veal calves
Persistence of the effects of early experience on consumption of low-quality roughage by sheep
Effect of degradable and escape protein and roughage type on performance and carcass characteristics of finishing yearling steers
The degradability characteristics of fifty-four roughages and roughage neutral-detergent fibres as described by in vitro gas product...
Use of real-time PCR technique in studying rumen cellulolytic bacteria population as affected by level of roughage in swamp buffalo.
Rates of Production of Acetate, Propionate, and Butyrate in the Rumen of Lactating Dairy Cows Given Normal and Low-Roughage Diets
Effects of intraruminal infusions of mineral salts on volatile fatty acid production in steers fed high-grain and high-roughage diets.