本试验旨在研究玉米、豆粕不同粉碎粒度组合对肉鸡饲料加工质量及肉鸡生长性能的影响。试验饲粮中玉米分别采用2.0、2.5和3.0 mm 3种筛片孔径进行粉碎,豆粕分别采用1.5、2.0和2.5 mm 3种筛片孔径进行粉碎,不同筛片孔径粉碎的玉米和豆粕...本试验旨在研究玉米、豆粕不同粉碎粒度组合对肉鸡饲料加工质量及肉鸡生长性能的影响。试验饲粮中玉米分别采用2.0、2.5和3.0 mm 3种筛片孔径进行粉碎,豆粕分别采用1.5、2.0和2.5 mm 3种筛片孔径进行粉碎,不同筛片孔径粉碎的玉米和豆粕两两组合成9个不同粉碎粒度处理组合,采用同一饲粮配方和制粒参数进行加工调制。试验选用22日龄的肉鸡900只,随机分为9个组,分别采食9个不同粒度组合处理的饲粮,每个组5个重复,每个重复20只鸡,进行为期21 d的肉鸡饲养试验。结果表明:1)玉米、豆粕分别采用3.0和1.5 mm筛片孔径粉碎处理,颗粒饲料的颗粒耐久性指数和颗粒硬度最大;玉米、豆粕分别采用2.5和1.5 mm筛片孔径粉碎处理,颗粒饲料的颗粒耐久性指数和颗粒硬度最小。2)玉米、豆粕均采用2.5 mm筛片孔径粉碎处理,肉鸡的平均末重和平均日增重最高,料重比最低。3)玉米和豆粕的粉碎粒度及二者的交互作用对肉鸡粗蛋白质、能量和干物质的表观消化率以及肉鸡的全净膛率、肌胃相对重量和腺胃相对重量的影响均不显著(P>0.05)。由此可见,22~42日龄肉鸡饲粮中玉米和豆粕都采用2.5 mm筛片孔径粉碎,即玉米和豆粕几何平均粒径分别为348.38和450.46μm时,肉鸡的生长性能最佳。展开更多
We synthesized BiVO_(4)mesocrystals with ordered assembly structure,and studied the structural order and the relationship between the photodegradation of Rhodamine B.Au nanoparticles(NPs)were successfully loaded onto ...We synthesized BiVO_(4)mesocrystals with ordered assembly structure,and studied the structural order and the relationship between the photodegradation of Rhodamine B.Au nanoparticles(NPs)were successfully loaded onto Meso-BiVO_(4)by light-assisted induction,and Cd nanoparticles were further selected to be deposited on Au nanoparticles to form Z-scheme photocatalyst Meso-BiVO_(4)-Au-CdS heterostructures.We try and propose to analyze its ordered assembly structure by XRD for the first time.The results show that Meso-BiVO_(4)is a mesocrystal with highly exposed(001)plane and directional assembly structure.The charge separation efficiency of all samples was studied by PL spectroscopy.The results show that the Z-scheme Meso-BiVO_(4)-Au-CdS can promote the charge separation and obtain the best carrier separation efficiency.Thus,it has the best photocatalytic activity in the experiment of photocatalytic degradation of rhodamine B.The main active species in the degradation process were confirmed by free radical trapping experiment,and the degradation mechanism was put forward.展开更多
文摘本试验旨在研究玉米、豆粕不同粉碎粒度组合对肉鸡饲料加工质量及肉鸡生长性能的影响。试验饲粮中玉米分别采用2.0、2.5和3.0 mm 3种筛片孔径进行粉碎,豆粕分别采用1.5、2.0和2.5 mm 3种筛片孔径进行粉碎,不同筛片孔径粉碎的玉米和豆粕两两组合成9个不同粉碎粒度处理组合,采用同一饲粮配方和制粒参数进行加工调制。试验选用22日龄的肉鸡900只,随机分为9个组,分别采食9个不同粒度组合处理的饲粮,每个组5个重复,每个重复20只鸡,进行为期21 d的肉鸡饲养试验。结果表明:1)玉米、豆粕分别采用3.0和1.5 mm筛片孔径粉碎处理,颗粒饲料的颗粒耐久性指数和颗粒硬度最大;玉米、豆粕分别采用2.5和1.5 mm筛片孔径粉碎处理,颗粒饲料的颗粒耐久性指数和颗粒硬度最小。2)玉米、豆粕均采用2.5 mm筛片孔径粉碎处理,肉鸡的平均末重和平均日增重最高,料重比最低。3)玉米和豆粕的粉碎粒度及二者的交互作用对肉鸡粗蛋白质、能量和干物质的表观消化率以及肉鸡的全净膛率、肌胃相对重量和腺胃相对重量的影响均不显著(P>0.05)。由此可见,22~42日龄肉鸡饲粮中玉米和豆粕都采用2.5 mm筛片孔径粉碎,即玉米和豆粕几何平均粒径分别为348.38和450.46μm时,肉鸡的生长性能最佳。
文摘We synthesized BiVO_(4)mesocrystals with ordered assembly structure,and studied the structural order and the relationship between the photodegradation of Rhodamine B.Au nanoparticles(NPs)were successfully loaded onto Meso-BiVO_(4)by light-assisted induction,and Cd nanoparticles were further selected to be deposited on Au nanoparticles to form Z-scheme photocatalyst Meso-BiVO_(4)-Au-CdS heterostructures.We try and propose to analyze its ordered assembly structure by XRD for the first time.The results show that Meso-BiVO_(4)is a mesocrystal with highly exposed(001)plane and directional assembly structure.The charge separation efficiency of all samples was studied by PL spectroscopy.The results show that the Z-scheme Meso-BiVO_(4)-Au-CdS can promote the charge separation and obtain the best carrier separation efficiency.Thus,it has the best photocatalytic activity in the experiment of photocatalytic degradation of rhodamine B.The main active species in the degradation process were confirmed by free radical trapping experiment,and the degradation mechanism was put forward.
