几种菌糠营养成分及其瘤胃降解率

Nutrient components and ruminal degradability of several waste materials from fungal culture

为了研究菌糠用作反刍动物饲料的饲用价值，对６种菌糠进行了营养成分分析．同时选用４只装有瘤胃瘘管的山羊，利用尼龙袋法分别对其ＤＭ、ＯＭ、ＮＤＦ和ＡＤＦ瘤胃降解率进行测定．研究表明：香菇菌糠、平菇菌糠Ｂ、毛木耳菌糠、平菇菌糠Ａ、猴头菇菌糠和草菇菌糠的ＣＰ、ＮＦＥ、Ｃａ、Ｐ含量均高，ＤＭ 动态降解率分别是７１．９０％ 、４０．１５％ 、３６．３５％ 、３５．７２％ 、３５．５６％ 和３３．３６％ ，ＯＭ 降解率分别是６９．９４％ 、３６．１９％ 、３０．５９％ 、３３．８８％ 、３１．４０％ 和２７．７８％ ，且降解速度较快，消化延搁期短．结果表明菌糠营养物质含量高，可被反刍动物消化利用，但有些菌糠ＮＤＦ和ＡＤＦ瘤胃降解率不高，需通过加工处理，进一步提高其营养价值．

The nutrient components and ruminal degradability of dry matter (DM), organic matter (OM), neutral detergent fiber (NDF), and acid detergent fiber (ADF) of 6 kinds of waste materials from fungal culture (WMFC) were analysed and measured by nylon bag method (in situ) in 4 adult goats installing rumen fistula in order to study the feeding value by using WMFC as feeds for ruminant. The results showed that the CP , NFE, Ca and P contents of WMFC were high. The effective degradability of DM of WMLC, WMPC B, WMAC, WMPC A, WMHC and WMVC were 71.90%, 40.15%, 36.35%,35.72%, 35.56% and 33.36%, that of OM, 69.94%, 36.19%, 30.59%, 33.88%, 31.40% and 27.78%, respectively. The rate of degradation was fast, and the lag time was short. It demonstrated that the contents of nutrient components of WMFC, which might be digested by ruminant, were high, but as the degradabilities of NDF and ADF of some WMFC were low, it was necessary to improve their nutrient value by processing treatments.