动物营养学报2023，Vol.35Issue(12)：7805-7816,12.DOI:10.12418/CJAN2023.709
饲粮粗纤维水平对中新鸭生长性能、屠宰性能、肠道发育及盲肠菌群结构的影响
Effects of Dietary Crude Fiber Levels on Growth Performance,Slaughter Performance,Intestinal Development and Cecal Flora Structure of Zhongxin Ducks
摘要
Abstract
The aim of this experiment was to study the effects of dietary crude fiber levels on growth perform-ance,slaughter performance,intestinal development and cecal flora structure of Zhongxin ducks.A total of 600 one-day-old male commercial Zhongxin ducks were randomly divided into 3 groups with 8 replicates per group and 25 ducks per replicate.The dietary crude fiber levels were low(2.9％in the starter and 3.6％in the finish-er),medium(4.2％in the starter and 4.7％in the finisher)and high(5.8％in the starter and 5.5％in the fin-isher),respectively.The experimental period was 37 days.The results showed as follows:1)dietary crude fi-ber levels had no significant effect on the growth performance of Zhongxin ducks at all stages(P＞0.05).2)The abdominal fat percentage of high crude fiber level group was significantly higher than that of low crude fi-ber level group(P＜0.05).3)The relative weight of jejunum and ileum and proventriculus index of high crude fiber level group were significantly higher than those of low and medium crude fiber level groups(P＜0.05),and the absolute weight of jejunum and ileum of medium and high crude fiber level groups were significantly higher than those of low crude fiber level group(P＜0.05).Dietary crude fiber levels had no significant effect on the intestinal injury score of Zhongxin ducks(P＞0.05).4)The Shannon index of medium crude fiber level group was significantly higher than that of high crude fiber level group(P＜0.05).At the phylum level,the relative abundance of Firmicutes was the highest in medium crude fiber level group,while the relative abun-dance of Bacteroidetes was the highest in low crude fiber level group.At the genus level,the relative abun-dance of Bacteroides was the highest in low crude fiber level group.In conclusion,Zhongxin ducks feeding medium crude fiber level(4.2％in the starter and 4.7％in the finisher)dites showed the best growth perform-ance and cecal flora structure;feeding high crude fiber level(5.8％in the early stage and 5.5％in the late stage)diets are beneficial for the gastrointestinal tract development of Zhongxin ducks,but it may have adverse effects on growth performance and slaughter performance.[Chinese Journal of Animal Nutrition,2023,35(12):7805-7816]关键词
中新鸭/粗纤维/生长性能/屠宰性能/肠道发育/盲肠菌群结构Key words
Zhongxin ducks/crude fiber/growth performance/slaughter performance/intestinal develop-ment/cecal flora structure分类
农业科技引用本文复制引用
来金良,周桂莲,李勇,燕磊,吕尊周,姚玥州,韩青海,刘振林,杨庆磊,吕孝国,李鑫,刘宗强..饲粮粗纤维水平对中新鸭生长性能、屠宰性能、肠道发育及盲肠菌群结构的影响[J].动物营养学报,2023,35(12):7805-7816,12.基金项目
山东省重点研发计划(TSCY20190108) （TSCY20190108）
山东省重点研发计划(2021CXGC010805) （2021CXGC010805）
国家重点研发计划(2022YFD13006005) （2022YFD13006005）
鸢都产业领军人才项目(2022年度) （2022年度）
