The aim of this study was to determine the effects of supplementing organic forms of zinc(zinc acetate,ZnA)and inorganic zinc(zinc sulfate,Zn S)on performance,the gain to feed ratio(G:F)and skeletal characters in broi...The aim of this study was to determine the effects of supplementing organic forms of zinc(zinc acetate,ZnA)and inorganic zinc(zinc sulfate,Zn S)on performance,the gain to feed ratio(G:F)and skeletal characters in broilers from the first day to the 42th day.A total of 240-day-old broilers(Arbor Acres)were randomly distributed in four groups.A corn-soybean meal-based control diet containing recommended concentrations of inorganic trace minerals and other nutrients was prepared.On the basal diets,the control goup(CG)was supplemented with Zn S and the treatment group(TG)feeding diets were with different ZnA supplemental levels(80,100 and 150 mg·kg^-1)of ZnA.Each group was allotted randomly to five replicates and 12 broilers in each replicate and fed ad libitum from the first day to the 42th day.The results showed that supplementation of ZnA significantly increased(p<0.05)energy and phosphorus(P)compared to that fed Zn S on the 21th day.Calcium(Ca),tibia weight,ash weight,tibia Ca and tibia P in TG(80 mg·kg^-1 of ZnA)were the highest(p<0.05).The pancreas Zn content of TG was higher than that in CG and increased with the supplementation of ZnA.On the 42th day,the content of energy,crude protein(CP),Ca and tibia Ca in TG(80 mg·kg^-1 of ZnA)were the highest(p<0.05),the change of pancreas Zn was the same as the results on the 21th day,but enter extract(EE),tibia weight,tibia length,tibia width and ash weight were not affected(p>0.05)by ZnA.The results of this study showed that ZnA was better than Zn S in improving the early growth performance,nutrient utilization rate in broilers,the length and weight of broiler tibia,it promoted the calcium,phosphorus deposition and normal growth of tibia,and the optimum dietary ZnA level to feed was 80 mg·kg^-1.ZnA affected body Zn stores and the apparent metabolic rate of nutrients.展开更多
目的:探讨腰椎-骨盆矢状面参数在全脊柱EOS成像系统(whole-spine EOS images,EOS)与传统X线成像的一致性。方法:选择2019年5月至7月在北京积水潭医院脊柱外科住院的患者50例(男26例,女24例),进行标准站立位EOS脊柱全长正侧位和传统X线...目的:探讨腰椎-骨盆矢状面参数在全脊柱EOS成像系统(whole-spine EOS images,EOS)与传统X线成像的一致性。方法:选择2019年5月至7月在北京积水潭医院脊柱外科住院的患者50例(男26例,女24例),进行标准站立位EOS脊柱全长正侧位和传统X线腰椎骨盆正侧位摄片。2名主治医师分别使用Surgimap软件对50例患者EOS侧位片和传统X线腰椎骨盆侧位片的骨盆入射角(pelvic incidence,PI),骨盆倾斜角(pelvic tilt,PT),骶骨倾斜角(sacral slope,SS),腰椎前凸角(lumbar lodorsis,LL)进行测量,并于间隔2周后在再次测量。对2名医师测量的结果进行一致性检验(可信度分析),对2名医师前后2次测量结果进行一致性检验(可重复性分析)。利用4次测量数据分析腰椎-骨盆矢状面平衡参数在EOS与传统X线的一致性和差异性。结果:使用EOS成像和传统X线成像测量的PI角均值分别为(50.5±12.6)°和(51.4±12.2)°(均值差0.9,差值95%置信区间为0.2-1.6,P=0.020);PT角均值分别为(16.2±8.9)°和(16.9±8.6)°(均值差0.7,差值95%置信区间为-0.6-2.0,P=0.283);SS角均值分别为(34.3±9.9)°和(34.5±10.4)°(均值差0.2,差值95%置信区间为-1.2-1.5,P=0.800);LL角均值分别为(42.7±14.9)°和(43.3±15.3)°(均值差0.6,差值95%置信区间为-0.8-2.0,P=0.149)。两种不同成像方法测量骨盆PI差异有统计学意义(P=0.020,P<0.05),但均差值小(0.9°),无临床差异性;PT、SS、LL差异无统计学意义(P>0.05)。两种成像方法组间可信度分析显示,2名医师使用Surgimap软件测量侧位PI、PT、SS、LL均有极佳的一致性(EOS成像的相关系数分别为0.984、0.993、0.980、0.989,X线成像的相关系数分别为0.975、0.985、0.976、0.988)。可重复性分析显示,2名主治医师前后2次测量的PI、PT、SS、LL均有极佳的一致性(组内ICC为0.963~0.996)。结论:在局部腰椎骨盆段,EOS成像与传统X线成像测量的PI、PT、SS、LL一致性良好,对指导临床的应用没有差异性。展开更多
文摘The aim of this study was to determine the effects of supplementing organic forms of zinc(zinc acetate,ZnA)and inorganic zinc(zinc sulfate,Zn S)on performance,the gain to feed ratio(G:F)and skeletal characters in broilers from the first day to the 42th day.A total of 240-day-old broilers(Arbor Acres)were randomly distributed in four groups.A corn-soybean meal-based control diet containing recommended concentrations of inorganic trace minerals and other nutrients was prepared.On the basal diets,the control goup(CG)was supplemented with Zn S and the treatment group(TG)feeding diets were with different ZnA supplemental levels(80,100 and 150 mg·kg^-1)of ZnA.Each group was allotted randomly to five replicates and 12 broilers in each replicate and fed ad libitum from the first day to the 42th day.The results showed that supplementation of ZnA significantly increased(p<0.05)energy and phosphorus(P)compared to that fed Zn S on the 21th day.Calcium(Ca),tibia weight,ash weight,tibia Ca and tibia P in TG(80 mg·kg^-1 of ZnA)were the highest(p<0.05).The pancreas Zn content of TG was higher than that in CG and increased with the supplementation of ZnA.On the 42th day,the content of energy,crude protein(CP),Ca and tibia Ca in TG(80 mg·kg^-1 of ZnA)were the highest(p<0.05),the change of pancreas Zn was the same as the results on the 21th day,but enter extract(EE),tibia weight,tibia length,tibia width and ash weight were not affected(p>0.05)by ZnA.The results of this study showed that ZnA was better than Zn S in improving the early growth performance,nutrient utilization rate in broilers,the length and weight of broiler tibia,it promoted the calcium,phosphorus deposition and normal growth of tibia,and the optimum dietary ZnA level to feed was 80 mg·kg^-1.ZnA affected body Zn stores and the apparent metabolic rate of nutrients.
