单 位：
湖南农业大学动物科技学院;中国农业大学动物科技学院;湖南农业大学动物科学技术学院;中国农业大学动物科技学院动物营养学国家重点实验室;中国农业大学动物科技学院动物营养国家重点实验室
关键词：
25-羟胆钙化醇;维生素D3;生产性能;骨骼发育;北京鸭
摘 要：
试验选用2 160羽1日龄北京鸭,按4×3两因素设计随机分成12个处理,每处理6个重复;分别饲喂不同水平的25-羟胆钙化醇(25-OH-D3)(0、35、70、105μg/kg)与维生素D3(2 500、3 000、3 500 IU/kg)的日粮,探讨25-OH-D3在肉鸭日粮中的使用效果。结果表明:不同水平25-OH-D3对北京鸭生产性能没有显著影响;添加105μg/kg较35、70μg/kg显著降低45日龄北京鸭胸肌率(P<0.05);70、105μg/kg 25-OH-D3较35μg/kg显著提高了胫骨磷含量(P<0.05)。添加3 500、3 000 IU/kg维生素D3较2 500 IU/kg显著提高15～35日龄北京鸭日增重(P<0.05);添加3 500 IU/kg维生素D3较3 000、2 500 IU/kg显著提高14、45日龄胫骨钙含量(P<0.05)。25-OH-D3和维生素D3对14日龄胫骨中钙、磷含量和45日龄胫骨磷含量分别存在极显著(P<0.01)和显著(P<0.05)地交互作用。综合本试验可得出,北京鸭日粮中添加3 000 IU/kg维生素D3和70μg/kg 25-OH-D3效果最佳。
译 名：
Effects of 25-Hydroxycholecalciferol and Vitamin D_3 on Performance and Bone Mineralization in Beijing Duck
作 者：
ZHU Jian-jun1,2,YUAN Jian-min2,TIAN Ke-xiong1,ZHANG Bing-kun2,HUANG Chun-xi,YAN Lei3,CHEN Yao3(1.College of Animal Science and Technology,Hunan Agricultural University,Hunan Changsha 410128,China; 2.College of Animal Science and Technology,State Key Laboratory for Animal Nutrition,China Agricultural University,Beijing 100193,China;3.Beijing Golden Star Duck Centre,Beijing 102202,China)
关键词：
25-hydroxycholecalciferol;vitamin D3;performance;bone mineralization;Beijing ducks
摘 要：
To study the effects of 25-hydroxycholecalciferol(25-OH-D3) in ducks,2160 1-d-old Beijing ducks were randomly allocated to 12 treatments,with 6 replicates of 30 ducks per replicate,to investigate the effects of 25-OH-D3(0,35,70 and 105 μg/kg) on live,slaughter performance and bone mineralization in Beijing ducks(1 to 45 d of age)fed basal diets containing three levels of vitamin D3(2 500,3 000 and 3 500 IU/kg).The results showed that there was no effect of 25-OH-D3on average body weight,weight gain,feed intake and feed conversions.The ratio of breast meat was increased with increasing in concentrations of 25-OH-D3(0,35,70 μg/kg) while was decreased significantly(P<0.05) when fed with 105 μg/kg 25-OH-D3 compared to diets with 35,70 μg/kg 25-OH-D3.At 14 d,the concentration of phosphorus in tibia was increased with increasing in concentration of 25-OH-D3(0,35,70 and 105 μg/kg) while was significant differences between diets with 25-OH-D3 70,105 μg/kg and 0,35 μg/kg;At 15 to 35 d of age,the weight gain was increased significantly(P<0.05) when fed with the diets containing 3 000,3 500 IU/kg vitamin D3 compared to 2 500 IU/kg vitamin D3.At 14 and 45d of age,the concentration of calcium was increased significantly(P<0.05) when fed with diets containing 3 500 IU/kg vitamin D3 compared to 2 500 and 3 000 IU/kg vitamin D3;At 14 and 45 d of age,there were significant effects of interaction between 25-OH-D3 and vitamin D3 on the concentration of calcium and phosphorus(P<0.01) and phosphorus(P<0.05) in tibia,respectively.Based on above results,the optimum adding level of 25-OH-D3 was 70 μg/kg of diet containing 3 000 IU/kg vitamin D3.
