Effects of Feeding Mixed Pellet Feed on Rumination Behavior and Nutrient Digestibility of Mutton Sheep
This experiment was conducted by using the rich corn straw and alfalfa hay in Wuwei City,Gansu Province,to mix in a ratio of 1∶1,1∶2 and 2∶1,and combine the prepared roughage with concentrate in a ratio of 30∶70,40∶60 and 50∶50,nine kinds of mixed pellet feed were produced and fed to mutton sheep.Ruminant behavior of mutton sheep was observed and recorded,to screen the best ratio of corn stalk and alfalfa hay and the ratio of concentrate to coarse.The results showed that the rumen function was normal,but the digestibility of crude protein and crude fiber was significantly affected by the ratio of crude protein to crude fiber.The digestibility of crude protein in A3B2 group was 75.01%,that in A1B3 group was 66.19%,and that in A3B2 group was significantly higher than that in A1B3 group by 11.75%(P<0.05).The digestibility of crude fiber in A3B2 group was 67.01%,and that in A1B3 group was 61.18%.Compared with A1B3 group,the digestibility of crude fiber in A3B2 group was significantly improved by 8.7%(P<0.05),and there was no significant difference among other groups(P>0.05).The results showed that the ratio of corn straw to alfalfa hay was 1∶2,and the ratio of concentrate to forage was 50∶50.
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