Fig. 2

Milk yield and components of goats fed LC or HC diets for 10 weeks. YLC, PLC and FLC represent milk yield, milk protein and milk fat in the LC group (n = 5, mean ± SEM), respectively; YHC, PHC and FHC represent milk yield, milk protein and milk fat in the HC group (n = 5, mean ± SEM), respectively. Red circle and red filled circle indicate the variation tendency of milk protein; green rhomboids and green filled rhomboids indicate the variation tendency of milk fat; white and black filled bar indicate the weekly averaged milk yield of lactating goats from LC group or HC group. LC, low concentration diet; HC high concentration diet. Asterisks indicate the level of statistically significant difference: * P < 0.05; ** P < 0.01