沈阳农业大学学报2016，Vol.47Issue(3)：291-298,8.DOI:10.3969/j.issn.1000-1700.2016.03.006
饲粮纤维源及粗纤维水平对肉兔胃肠道发育及十二指肠组织形态的影响
Effects of Dietary Fiber Source and Crude Fiber Level on Gastrointestinal Development and Duodenum Morphology of Meat Rabbits
摘要
Abstract
The effects of dietary fiber sources and crude fiber levels on gastrointestinal development and duodenum morphology of meat rabbits were investigated. The experiment was carried out using two-factorial design. Six experimental diets were formulated with two fiber sources (alfalfa hay meal and rice husk meal, respectively) and three crude fiber (CF) levels (12%, 14% and 16%, respectively) under the isoenergetic and isonitrogenous conditions, and the proportions of alfalfa hay meal and rice husk meal were 24.5%, 31.5%, 37.5% and 14.0, 17.5, 22.0% , respectively. A total of 144 Ira growing meat rabbits aged at 70 to 80 days were randomly distributed into 6 groups, and each group contained 4 replicates and each replicate contained 6 rabbits. Each rabbit was kept in individual cage. At the end of feeding trial, 1 rabbit from each replicate was randomly selected, slaughtered and sampled, and the gastrointestinal length and intestinal weight were determined, and the mucosa morphology of duodenum were observed. The results showed that the dietary fiber source and CF level had no significant effects on the relative length of the stomach, duodenum, Jejunum ileum and cecum (p﹥0.05). The dietary fiber source and CF level had no significant effects on the relative weight of the stomach, duodenum and cecum (p﹥0.05),however, the relative weight of Jejunum ileum of rabbit with rice husk meal was significantly higher than that with alfalfa hay meal (p﹤0.01). The villus height of duodenum from alfalfa hay meal group was significantly higher than that from rice husk meal group (P﹤0.05). The alfalfa hay meal group with 16% CF level diet had the highest villus height and V/C, significantly higher than did the other groups (p﹤0.05). However, the dietary fiber source and CF level had no significant effects on crypt depth of the duodenum (p﹥0.05). In summary, under this experimental condition, the meat rabbits fed with 16% CF level diet of alfalfa hay meal (dietary alfalfa hay meal proportion is 37.5%) has the highest villus height and V/C, the smallest crypt depth and the best development.关键词
胃肠道发育/十二指肠组织形态/纤维源/粗纤维/肉兔Key words
gastrointestinal development/duodenum morphology/fiber source/CF/meat rabbits分类
农业科技引用本文复制引用
孙佳易,杨桂芹,郭东新,石娇,潘秀东..饲粮纤维源及粗纤维水平对肉兔胃肠道发育及十二指肠组织形态的影响[J].沈阳农业大学学报,2016,47(3):291-298,8.基金项目
现代农业产业技术体系建设专项基金项目(CARS-44- B-2) （CARS-44- B-2）
