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

• Published in: Journal of Integrative Agriculture Vol. 13; no. 12; pp. 2731 - 2740
• Main Author: JIN Ling, GAO Yu-yun, YE Hui, WANG Wen-ce, LIN Zhen-ping, YANG Hui-yong, HUANG Song-bo , YANG Lin (National Key Laboratory of Integrated Management of Crop Diseases and Pests, Ministry of Education/College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, P.R.China)
• Format: Journal Article
• Language: English
• Published: Science Press 01-12-2014; College of Animal Science, South China Agricultural University, Guangzhou 510642, P.R.China%Shantou Baisha Research Institute of 0riginal Species of Poultry and Stock, Shantou 515800, P.R.China; Elsevier
• Subjects: dietary fiber; dietary fiber grit performance gastrointestinal tract goslings; gastrointestinal tract; goslings; grit; 平均日增重; 生长性能; 砂砾料; 胃肠道发育; 脂代谢; 膳食纤维; 血清甘油三酯; 雏鹅; dietary ifber; performance; gastrointestinal tract; grit; goslings
• ISSN: 2095-3119; 2352-3425
• DOI: 10.1016/S2095-3119(13)60729-7

This study investigated effects of dietary ifbre 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 ifbre （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.