Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (12): 2731-2740.DOI: 10.1016/S2095-3119(13)60729-7

• 论文 • 上一篇    下一篇

Effects of Dietary Fiber and Grit on Performance, Gastrointestinal Tract Development, Lipometabolism, and Grit Retention of Goslings

 JIN Ling, GAO Yu-yun, YE Hui, WANG Wen-ce, LIN Zhen-ping, YANG Hui-yong, HUANG Song-bo , YANG Lin   

  1. 1、College of Animal Science, South China Agricultural University, Guangzhou 510642, P.R.China
    2、Shantou Baisha Research Institute of Original Species of Poultry and Stock, Shantou 515800, P.R.China
  • 收稿日期:2013-10-14 出版日期:2014-12-01 发布日期:2014-12-10
  • 通讯作者: YANG Lin, E-mail: linyangscau@126.com
  • 作者简介:JIN Ling, E-mail: Lindajin2013@126.com
  • 基金资助:

    Acknowledgements This work was financially supported by the China Agriculture Research System (CARS-43-14) and the Special Fund for Agro-scientific Research in the Public Interest, China (201303143).

Effects of Dietary Fiber and Grit on Performance, Gastrointestinal Tract Development, Lipometabolism, and Grit Retention of Goslings

 JIN Ling, GAO Yu-yun, YE Hui, WANG Wen-ce, LIN Zhen-ping, YANG Hui-yong, HUANG Song-bo , YANG Lin   

  1. 1、College of Animal Science, South China Agricultural University, Guangzhou 510642, P.R.China
    2、Shantou Baisha Research Institute of Original Species of Poultry and Stock, Shantou 515800, P.R.China
  • Received:2013-10-14 Online:2014-12-01 Published:2014-12-10
  • Contact: YANG Lin, E-mail: linyangscau@126.com
  • About author:JIN Ling, E-mail: Lindajin2013@126.com
  • Supported by:

    Acknowledgements This work was financially supported by the China Agriculture Research System (CARS-43-14) and the Special Fund for Agro-scientific Research in the Public Interest, China (201303143).

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摘要： This study investigated effects of dietary fibre and grit on growth performance, gastrointestinal tract (GIT) development, serum indexes and grit retention of Sichuan white goslings in China. The experiment was a 3×2 factorial design consisting of dietary crude fibre (CF) at 2.0, 4.0 and 6.0% levels by adding grass meal and with or without grit supplementation. A total of 720 1-d-old male goslings were randomly allocated into 36 pens of 20 goslings/pen (n=6 pens/treatment). At 21 d of age, GIT, blood samples and grit in gizzards were collected. Body weight (BW), empty BW (without GIT), average daily gain (ADG) and average daily feed intake (ADFI) were affected by CF levels and the medium (4.0%) had the highest value. Adding grit improved BW, empty BW, ADG and ADFI. CF affected relative weight or length of proventriculus, gizzard and duodenum. Increasing CF levels decreased jejunum villus height and affected caecal crypt depth and villus height to crypt depth ratio. Higher CF levels decreased serum triglyceride. Adding grit increased relative weight of abdominal fat. Grit addition increased grit weight in gizzard and the ratio of grit in 0.45-1 and 1-2 mm while decreasing the ratio of grit <0.45 and 2-3 mm. In conclusion, moderate CF level and grit addition increased performance of goslings without interaction. Dietary CF levels affected the development of upper GIT and serum triglyceride. Grit needed by goslings should be less than 2 mm. Goslings’ gizzard would accumulate grit from feed when other grit could not be acquired.

关键词: dietary fiber , grit , performance , gastrointestinal tract , goslings

Abstract: This study investigated effects of dietary fibre and grit on growth performance, gastrointestinal tract (GIT) development, serum indexes and grit retention of Sichuan white goslings in China. The experiment was a 3×2 factorial design consisting of dietary crude fibre (CF) at 2.0, 4.0 and 6.0% levels by adding grass meal and with or without grit supplementation. A total of 720 1-d-old male goslings were randomly allocated into 36 pens of 20 goslings/pen (n=6 pens/treatment). At 21 d of age, GIT, blood samples and grit in gizzards were collected. Body weight (BW), empty BW (without GIT), average daily gain (ADG) and average daily feed intake (ADFI) were affected by CF levels and the medium (4.0%) had the highest value. Adding grit improved BW, empty BW, ADG and ADFI. CF affected relative weight or length of proventriculus, gizzard and duodenum. Increasing CF levels decreased jejunum villus height and affected caecal crypt depth and villus height to crypt depth ratio. Higher CF levels decreased serum triglyceride. Adding grit increased relative weight of abdominal fat. Grit addition increased grit weight in gizzard and the ratio of grit in 0.45-1 and 1-2 mm while decreasing the ratio of grit <0.45 and 2-3 mm. In conclusion, moderate CF level and grit addition increased performance of goslings without interaction. Dietary CF levels affected the development of upper GIT and serum triglyceride. Grit needed by goslings should be less than 2 mm. Goslings’ gizzard would accumulate grit from feed when other grit could not be acquired.

Key words: dietary fiber , grit , performance , gastrointestinal tract , goslings