粗饲料及食品加工副产品的瘤胃有机物降解率的研究

本实验用瘤胃尼龙袋法测定了酱油渣（长营）、酱油渣（豆各庄）、白酒糟（大厂）、白酒糟（围场）、玉米淀粉渣、麦芽根、啤酒糟、麸皮、羊草、稻草、氢化稻草、高梁青贮（豆各庄）、大麦青贮（长营）、高粱青贮（长营）、苜蓿、王米秸、麦秸、氨化麦秸的瘤胃有机物动态降解率（％）分别为４６．５０、４６．０２、２５．４１、１８．５４、３８．５８、５９．０３、３２·８４、６９·１４、４１．１４、３２．０９、３７．７７、３９．８６、３６．３６、３６．７８、４５．１３、３２．８７、２９．５０、３７．１５。前８种饲料营养成份的粗脂肪（ＥＥ）、粗蛋白（ＣＰ）、粗纤维（ＣＰ）、无氮浸出物（ＮＰＥ）与瘤胃有机物动态降解率（ＦＯＭ）的回归方程为：ＦＯＭ＝１９１．４５＋０．８０ＥＥ－２．２０ＣＰ－４．３９ＣＦ－０．９１ＮＦＥ（Ｒ＝０．９１．ｎ＝８）相应后１０种饲料的回归方程为：ＦＯＭ＝－１０．５３－０．４１ＥＥ＋１．８３ＣＰ＋０．４４ＣＦ＋０．５６ＮＦＥ（Ｒ＝０．９０，ｎ＝１０）

Study on the Degradability of Organic Matter of Roughtages and Foods By-products in Rumen of Cattle

The OM degradability of roughages were determined by nylon bag technique with three rumen-fistulated cattle.The degradabilities of soy sauce by-product(Changying),soy sauce by-product(Douniu),grain stillage(Dachang),grain stil- lage(Weichang),maize starch by-product,dry malt residues,brewer's grains,wheat bran,Chinese wildrye,rice straw, ureatreated rice straw,sorghum silage(Douniu),sorghum silage(Changying),lucerne,corn stalk,wheat straw,urea treated wheat straw were 46.50,46.02,25.41,18.54,38.58,59.03,32.84,69.14,41.14, 32. 09,37. 77,39. 86.36.36,36. 78.45. 13. 32. 87,29. 50,37.15 per cent respectively. The regression formulation be- tween ether extract(EE),crude protein(CP), crude fiber(CF),nitrogen free extract(NFF)and degradability of organic matter (POM ) the first eight feedstuffs: POM=191. 45 0. 80EE-2. 20CP-4. 39CF-0. 91NFE (R=0. 91,n=8) and of the last ten feedstuffs :POM=-10. 53-0. 41EE 1.83CP 0. 44CF 0. 56NFE (R=0. 90.n=10)