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The overall network of the limiting factors of cows fed low-quality cereal straw (corn stover, rice straw) on phenotypes (including lactating performance and general characteristics) and underlying molecular mechanisms. The upwards arrows indicate the increase and the downwards arrows represent the decrease of the expressions of genes compared with the cows fed a high-quality forage diet (alfalfa). AA = amino acid; BCAA = branched chain amino acids.
