| 鸭饲料代谢能测定方法的研究 Ⅰ.鸭TME测定的消化道排空期和排泄物收集期 |
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| 引用本文： | 施用晖,张慎容,乐国伟.鸭饲料代谢能测定方法的研究 Ⅰ.鸭TME测定的消化道排空期和排泄物收集期[J].四川农业大学学报,1993(3). |
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| 作者姓名： | 施用晖 张慎容 乐国伟 |
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| 作者单位： | 四川农业大学动物营养研究所，四川农业大学动物营养研究所，四川农业大学动物营养研究所 雅安市 625014，雅安市 625014，雅安市 625014 |
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| 基金项目： | 四川科委下达的:“肉鸭营养及饲料养技术的研究”项目中的研究内容之一 |
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| 摘 要： | 用建昌成年公鸭探讨了不同类型饲料(豆饼、菜籽饼、小麦麸、统糠、牛鞭草粉、玉米、小麦)TME测定的适宜消化道排空期和排泄物收集期。排空处理为24和/或32、40小时,收集期为24、32、40、48小时。结果表明,除牛鞭草粉外,各饲料排空40小时组累积排泄物质和各收集段出能量均显著(P<0.05)低于24、32小时排空组,AME、TME值高于(P<0.05)32、24小时组。不同收集时间的TME值差异不显著(P>0.05),而对AME值的影响因饲料而不同。鸭强饲麸皮和基础饲粮后消化道残留干物质量在饲后40小时低于24、32小时,48、56小时最低。综上结果,鸭TME测定的消化道排空时期以40小时为宜,收集期视饲料性质而异,能量蛋白质饲料可在32—40小时,粗饲料、粮麸类应适当延长。
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| 关 键 词： | 鸭(49ME) 排空 收集时间 残留干物质 代谢能(49MD) 饲料[49MD]61DE |
Bioassay for Metabolizable Eeergy in Ducks Ⅰ. The Effect of Duration of Starvation and Excreta Collection Time on The True Metabolizable Energy |
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| Abstract: | Adult, male J: an-Chang Ducks were used to study the duration of starvation prior to force feeding and the excreta collection peroids for true metabolizable energy (TME)of nine feedingstrffs (soybean meal, rapeseed meal, wheat bran, rice bran, maize, wheat, white clover, duckweed and Iimpograss). Ducks were starved for 24,32,40 hrs,and the excreta were collected quantitatively at 24,32,40 and 48 hrs following force feeding. The mean TME values of the feeds, except Iimpograss, were significantly higher (P<0.05)and cumulative dry matter excretion,excreta energy were lower (P<0.05) in ducks starved for 40 hrs than those starved for 24hrs. The excreta collection time had no significant effect on TME value of all feedingstuffs, whereas the effect of excreta collection on the AME varied with the kinds of feeds. In another experiment, residues in the gut of wheat bran fed and bassi diet-fed ducks were sinificantly lower in 40,48 and 56 hrs than those starved ducks in 24,32 hrs after feed jnput. It was concluded that the proper duration of starvation for bioassay of TME in ducks is 40 hrs. The excreta collection period was substantial accoreing to the nature of feedingstuffs. The colletion time for soybean meal, rapeseed meed, wheat brtan, wheat, and maize required 32 to 40 hrs, and fibrors rice bran, white clover,and duckweed required more than 40 hrs. |
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| Keywords: | DUCK STARVATION TIME EXCRTA COLLECTION TIME RESLDUES IN GUT METABOLIZABLE ENERGY STUFFS FEEDS |
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