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首页> 外文期刊>British Poultry Science >Effect of dietary fibre and grit on performance, gastrointestinal tract development, and grit pattern of goose
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Effect of dietary fibre and grit on performance, gastrointestinal tract development, and grit pattern of goose

机译：膳食纤维和砂砾对鹅的性能，胃肠道发育和鹅卵石的影响

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1. This study aimed to investigate effects of dietary fibre and grit on growth performance, gastrointestinal tract development, and gizzard grit retention of geese. 2. The trial had a 3 x 2 factorial design consisting of three levels of dietary crude fibre (CF, 4%, 7% and 10%, adjusted by grass powder), with or without grit addition (1-4 mm river sand). 3. In total, 648, 22-d-old male goslings were randomly allotted to six treatments (six pens/treatment). At 49 d and 70 d of age, one goose per pen was euthanised to collect samples. 4. The birds fed 10% CF had decreased feed conversion ratio (FCR) during 22-49 d, but this effect was less in older geese. Increasing dietary CF levels increased relative weights of gizzards for geese aged 49 d and 70 d. Grit addition decreased the relative weights of gizzard and duodenum of geese aged 49 d. The gizzard of geese could selectively retain grit from feed even with no grit added. With adequate supply, most grit in gizzard was 0.45-3 mm in size. 5. In conclusion, supplement of CF and grit mainly affected gastrointestinal tract, and the amount of CF affected FCR. Geese aged 22-49 d could utilise dietary CF levels of 4%-7% and older birds could feed on diets with up to 10% CF. The gizzard of goose selectively retained grit of a particle size of 0.45-3 mm.
机译：本研究旨在探讨膳食纤维和砂砾对生长性能，胃肠道发育和Giesh Grit Retent的影响。 2.试验有3×2因素设计，由三级膳食粗纤维（CF，4％，7％和10％，由草粉调整），有或没有砂砾加成（1-4毫米河砂） 。 3.总共，648,22-D旧的雄性胶囊被随机分配给六种治疗方法（六支术语/治疗）。在49 d和70 d时，每笔笔的一个鹅被安乐死以收集样品。 4.喂养10％CF的鸟类在22-49℃下饲料转化率（FCR）减少，但老鹅的这种效果较少。增加饮食CF水平增加了49岁和70岁的鹅肝的相对重量。砂砾添加减少了49岁的鹅的Gizzard和十二指肠的相对重量。即使没有添加砂砾，鹅的八鹅也可以选择性地保留来自饲料的砂砾。具有足够的供应，八大砂砾的尺寸为0.45-3毫米。总之，CF和砂砾的补充主要影响胃肠道，以及CF影响的FCR。 22-49岁的鹅可以利用膳食CF水平为4％-7％，较老的鸟类可以饲养高达10％CF的饮食。鹅的八颗颗粒粒度的粒度为0.45-3mm。

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