In order to explore the application effect of Oldenlandia polysaccharides(OPS)in the production of AA broilers,2007-day-old AA broilers were randomly divided into 4 groups,namely groups Ⅰ,Ⅱ,Ⅲ,and Ⅳ,each including ...In order to explore the application effect of Oldenlandia polysaccharides(OPS)in the production of AA broilers,2007-day-old AA broilers were randomly divided into 4 groups,namely groups Ⅰ,Ⅱ,Ⅲ,and Ⅳ,each including 50 chicks.The control group(group Ⅰ)was fed with basal diet;and the 3 experimental groups were fed based on the basal diet with the addition of OPS at 0.4 g/kg(group Ⅱ),0.8 g/kg(group Ⅲ),and 1.2 g/kg(group Ⅳ)feed for 1 week,respectively,and then fed the basal diet for 4 weeks.At the ages of 14,28,and 42 d,10 chickens were put into death in the control group and the experimental groups,respectively,and the duodenum and jejunum tissue samples were collected for the analysis of the effects of OPS on the structures of chick intestines.The results showed that at the age of 14 d,the villus lengths of duodenum and jejunum in groups Ⅱ,Ⅲ,and Ⅳ were significantly greater than those in group Ⅰ(P<0.05),and the ratios of duodenal or jejunal villus length to crypt depth in groups Ⅱ and Ⅲ were significantly greater than that in group Ⅰ(P<0.05);at the age of 28 d,the villus length of duodenum in group Ⅱ was significantly greater than that in group Ⅰ(P<0.05);and at the age of 42 d,the ratios of jejunual villus length to crypt depth in groups Ⅱ,Ⅲ and Ⅳ were significantly larger than those of group I(P<0.05).It showed that OPS could promote the small intestine development of AA broilers aged 14 to 42 d.展开更多
文摘In order to explore the application effect of Oldenlandia polysaccharides(OPS)in the production of AA broilers,2007-day-old AA broilers were randomly divided into 4 groups,namely groups Ⅰ,Ⅱ,Ⅲ,and Ⅳ,each including 50 chicks.The control group(group Ⅰ)was fed with basal diet;and the 3 experimental groups were fed based on the basal diet with the addition of OPS at 0.4 g/kg(group Ⅱ),0.8 g/kg(group Ⅲ),and 1.2 g/kg(group Ⅳ)feed for 1 week,respectively,and then fed the basal diet for 4 weeks.At the ages of 14,28,and 42 d,10 chickens were put into death in the control group and the experimental groups,respectively,and the duodenum and jejunum tissue samples were collected for the analysis of the effects of OPS on the structures of chick intestines.The results showed that at the age of 14 d,the villus lengths of duodenum and jejunum in groups Ⅱ,Ⅲ,and Ⅳ were significantly greater than those in group Ⅰ(P<0.05),and the ratios of duodenal or jejunal villus length to crypt depth in groups Ⅱ and Ⅲ were significantly greater than that in group Ⅰ(P<0.05);at the age of 28 d,the villus length of duodenum in group Ⅱ was significantly greater than that in group Ⅰ(P<0.05);and at the age of 42 d,the ratios of jejunual villus length to crypt depth in groups Ⅱ,Ⅲ and Ⅳ were significantly larger than those of group I(P<0.05).It showed that OPS could promote the small intestine development of AA broilers aged 14 to 42 d.
