Feed processing methods that can improve the utilization of crude fiber include（）
A. Physical crushing
B. Granulation
Chemical processing
D. Boiling
E. Biological fermentation
The main iron storage organs are（）
A. Bone marrow
B. Liver
C. Pancreas
D. Spleen
E. Heart
Non-starch polysaccharides（NSP）are mainly composed of（）and so on
A. Cellulose
B. Hemicellulose
C. Pectin
D. Resistant starch
E. Lignin
The ways animals lose water include（）
A. Excretion of feces
B. Perspiration
C. Respiration
D. Excretion through the product
Excretion of urine
微信支付 
支付宝支付