Effect of alkalization treatment on the nutritional value of Hedysarum scoparium
To explore the effect of alkalization treatment on the nutritional value of whole-plant Hedysarum scoparium,the study selected biennial Hedysarum scoparium in the blooming period in Alxa League,Inner Mongolia Autonomous Region.After being cut into 2～3 cm pieces,the collected Hedysarum scoparium was randomly divided into four groups.The first three groups were experimental groups,and calcium hydroxide was added successively according to 4％,6％and 8％of the dry matter content,respectively.The last group was the control group.Analysis of regular nutrients was performed after 30 days,and the nutritional value was evaluated by in vitro gas production.The results showed that:(1)Compared with the control group,the contents of neutral detergent fiber and acid detergent fiber in the three experimental groups were significantly decreased(P＜0.05),and tended to decrease with the increase of calcium hydroxide supplemental level.(2)At 12 h and 24 h after fermentation,gas production in the 6％supplemental level was significantly higher than that in the control group and 4％supplemental group(P＜0.05),but there was no significant difference compared with the 8％supplemental group.The gas production of the 6％supplemental group was the highest at 36 h and later,and the difference was significant compared with other groups(P＜0.05).(3)For the slow gas production part(b),the 6％supplemental level was significantly higher than that in the control group and 8％supplemental group(P＜0.05),but there was no significant difference compared with the 4％supplemental group.Potential gas production(a+b)at the 6％supplemental level was significantly higher than that in the 8％supplemental group(P＜0.05),but had no significant difference compared with the control group and the 4％supplemental group.(4)For total digestible digetible nutrients(TDN),organic matter digestion rate(OMD),metabolic energy(ME),and digestive energy(DE),the 6％supplemental level was significantly higher than that of the control group and 4％supplemental group(P＜0.05),but there was no significant difference compared with the 8％supplemental group.In general,the alkalization treatment of Hedysarum scoparium could effectively reduce the content of neutral detergent fiber and acid detergent fiber.The test results of in vitro gas production indicated that adding 6％calcium hydroxide of dry matter content had the best effect,which could improve OMD,ME,and improve feed quality.
Hedysarum scopariumalkalization treatmentin vitro gas production techniquenutritional value
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维普
