乳酸杆菌固态发酵降低菜籽粕硫代葡萄糖苷的研究

[目的]菜籽粕是动物饲料蛋白质的潜在来源,但由于其含有硫代葡萄糖苷、植酸等抗营养因子,限制了它的利用,本试验优化了固态发酵菜籽粕降低硫代葡萄糖苷的条件,并在最优条件下探究发酵对菜籽粕营养价值的影响.[方法]使用3株乳酸杆菌(罗伊氏乳杆菌L45、植物乳杆菌L47和约氏乳杆菌L63)等比例混合菌剂作为发酵液,以MRS培养基...     

环境响应型控制释放农药技术研究进展

为提高农药利用率,以菜籽粕 (rapeseed meal, RSM) 为基材,十八烷基三氯硅烷 (OTS) 与对氨基偶氮苯 (AAB) 为改性剂,通过浸涂法使OTS水解、自组装与缩聚,产生的聚十八烷基硅氧烷(PODS)通过自组装作用附着在RSM表面,同时将具有光致异构性的AAB附着在RSM表面,合成了具有光响应性的RSM-PODS/AAB唑啉草酯 (pinoxaden) 载体。采用傅立叶变换红外光谱、扫描电子显微镜、紫外-可见光谱(UV-Vis)和接触角测量装置对其结构和组成进行了表征。结果表明：改性后的RSM农药负载率比原始RSM提高了21.4%,在黑暗中72 h内唑啉草酯的累积释放率为83%,UV-Vis照射4 h累积释放率为95%,在阳光照射下6 h内累积释放率达92%。表明负载农药的RSM-PODS/AAB具有良好的UV-Vis和太阳光控制释放性能,此光响应亲脂农药载体通过UV-Vis和阳光响应行为可有效控制药物释放行为。     

酶在菜籽粕日粮中的应用研究进展

本文分析了在菜籽粕日粮中使用非淀粉多糖(NSP)酶、α-半乳糖苷酶、植酸酶、蛋白酶和淀粉酶等的必要性，并对这些酶在菜籽粕日粮中的作用机理及作用效果进行了概述，旨在为消除菜籽粕中的抗营养因子，提高菜籽粕在畜禽日粮中的应用比例及其营养价值提供一种可行的方法。     

以可利用氨基酸为基础配制肉鸡饲粮研究

选用２４０只ＡｒｂｏｒＡｃｅｒｓ商品代肉仔鸡进行了非常规蛋白质饲料菜籽粕配制可利用氨基酸平衡饲粮的饲养试验。     

生长肥育猪日粮中大量应用菜籽粕的生产效果

生长肥育猪日粮中大量应用菜籽粕的生产效果李桂甫，张学常，李春群，王锦松（河南省黄泛区农场畜牧公司饲料厂，西华４６６６３２）（河南省黄泛区农场第二商品猪场）菜籽粕资源丰富、价格低廉，粗蛋白质含量在３５％以上，但因其含有一些有害物质，制约了在养殖业中的应...     

Effect of Soybean Meal Replaced by Fermented Rapeseed Meal on Growth Performance,Meat Quality and Serum Biochemical Indexes of Broilers

This experiment was conducted to study the effect of soybean meal replacement by fermented rapeseed meal on growth performance,meat quality and serum biochemical indexes of broilers.A total 400 23-day-old Yellow-feathered male broilers were randomly divided into 4 groups with 4 replicates per group and 25 broilers per replicate.The broilers in control group were fed a basal diet,and the others were fed the basal diets with the 3% (group Ⅰ),6% (group Ⅱ) and 9% (group Ⅲ) fermented rapeseed meal equal-nutritionally replacing the soybean meal,respectively.The experiment lasted for 43 days.The results showed as follows:① Compared with control group,the ADG,ADFI and F/G of groups Ⅰ,Ⅱ and Ⅲ showed no significant differences (P>0.05);The ADG of group Ⅲ were 16.47% (P<0.05),15.03% (P<0.05) higher than that of groups Ⅰ and Ⅱ,the F/G of group Ⅲ were 7.71% (P<0.05),4.27% (P>0.05) lower than that of groups Ⅰ and Ⅱ.② There were no significant differences in the pH₁,pH₂₄,meat color (L^*,a^*,b^*),cooking loss and tenderness of chest muscle among all groups(P>0.05);Compared with control group,the water loss rate of groups Ⅰ,Ⅱ and Ⅲ were significantly decreased (P<0.05).③ Compared with control group,the serum GLU content of groups Ⅰ,Ⅱ and Ⅲ were decreased by 13.06%(P<0.05),8.12%(P>0.05) and 9.57%(P>0.05);The serum TP content of groups Ⅰ,Ⅱ and Ⅲ were increased by 2.50%(P>0.05),20.86%(P<0.05) and 33.92%(P<0.05);The serum GPT content of groups Ⅰ,Ⅱ and Ⅲ were decreased by 7.99%(P>0.05),18.85%(P>0.05) and 26.98%(P<0.05).It was concluded that it would be feasible to replace the soybean meal with 3% to 9% fermented rapeseed meal in broiler feeding,and the optimum supplemental level of fermented rapeseed meal was 9%.     

生长猪对国产双低菜籽粕与进口普通菜籽粕营养价值的比较

本研究旨在比较国产双低菜籽粕与进口普通菜籽粕营养价值的不同,共分为2个试验。试验1:选取18头初始体重[(48.3±2.4)kg]相近的健康去势公猪,采用全收粪法进行消化代谢试验,随机分为3组(每组6个重复,每个重复1头猪),分别饲喂基础饲粮和2种试验饲粮。分别以国产双低菜籽粕和进口普通菜籽粕替代基础饲粮中能量饲料的20%配制2种试验饲粮。试验期14 d(前9天为适应期,后5天为收集期)。试验2:选取18头初始体重[(35.3±3.8)kg]相近的装有简单T型瘘管的健康去势公猪,采用指示剂法进行氨基酸回肠末端消化率试验,随机分为3组(每组6个重复,每个重复1头猪),分别饲喂无氮饲粮和2种试验饲粮。分别以国产双低菜籽粕和进口普通菜籽粕作为唯一蛋白质和氨基酸来源配制2种试验饲粮。试验期7 d(前5天为适应期,后2天为收集期)。结果表明:国产双低菜籽粕的表观消化能和能量的表观消化率极显著低于进口普通菜籽粕(P<0.01),国产双低菜籽粕的表观代谢能显著低于进口普通菜籽粕(P<0.05);国产双低菜籽粕的氨基酸标准回肠末端消化率较低。由此可见,国产双低菜籽粕的营养价值较进口普通菜籽粕低。     

双低菜籽粕在断奶仔猪日粮中的适宜添加量研究

[目的]探讨断奶仔猪日粮中双低菜籽粕的适宜添加量。[方法]选取长白（♂）与八眉猪（♀）杂交一代母猪与长白（♂）杂交所产三元杂交仔猪48头,随机分为4组,12头/组,预饲期5 d,然后进行28 d饲喂试验。第1、第2和第3组饲粮中双低菜籽粕的添加量分别为5%,7%和9%,第4组为对照组,不添加双低菜籽粕,平衡日粮中的消化能。[结果]Ⅱ组断奶仔猪平均日增重最高;第7天与Ⅲ组,第14天和第21天与Ⅲ、Ⅳ组,第28天与其他3组均差异显著（P〈0.05）。[结论]双低菜籽粕含量为7%时增重效果最好。