摘要
本试验旨在研究发酵苹果渣对獭兔生长性能、养分消化率、小肠黏膜形态及分泌型免疫球蛋白A(SIgA)浓度的影响。试验共选用96只、45日龄的健康獭兔,随机分为4组,每组4个重复,每个重复6只(公母各占1/2)。4组獭兔分别饲喂含0(对照,CK组)、9.6%(A组)、19.2%(B组)和28.8%(C组)发酵苹果渣的试验饲粮。预试期15 d,正试期50 d。结果显示:与CK组相比,C组獭兔平均日增重提高了14.69%(P <0.05),料重比降低了6. 63%(P <0. 05),腹泻率降低了19.64%(P<0.05); C组獭兔饲粮干物质、有机物、粗蛋白质和粗纤维消化率分别提高了6.11%(P<0.05)、5.19%(P<0.05)、7.26%(P<0.05)和13.10%(P<0.05); C组獭兔空肠的绒毛长度和肠壁厚度分别增加了59.82%(P<0.05)和41.83%(P<0.05),同时十二指肠的隐窝深度降低了30.52%(P<0.05)。添加不同水平的发酵苹果渣对獭兔小肠中SIgA浓度无显著影响(P>0.05)。综上所述,在饲粮中添加28.8%的发酵苹果渣可以通过提高养分消化率,改善小肠黏膜形态来提高獭兔的生长性能,并可降低腹泻率,且对小肠中SIgA浓度无不良影响。
The aim of the study was to evaluate the effects of fermented apple pomace on growth performance,nutrient digestibility,intestinal mucosal morphology and secretory immunoglobulin (SIgA) concentration of Rex rabbits. Ninety-six Rex rabbits at 45 days of age were randomly divided into 4 groups with 4 replicates per group and 6 rabbits (half male and half female) per replicate. Rabbits in the 4 groups were fed experimental diets which contained 0 (control,group CK),9.6%(group A),19.2%(group B) and 28.8%(group C) fermented apple pomace,respectively. The adaption period was 15 d,and the experiment period was 50 d. The results showed that the average daily gain of Rex rabbits in group C increased by 14.69%( P <0.05),the feed/gain decreased by 6.63%( P <0.05) and the diarrhea rate decreased by 19.64%( P <0.05) compared with group CK. The digestibility of dry matter,organic matter,crude protein and crude fibre in group C increased by 6.11%,5.19%,7.26% and 13.10% compared with group CK ( P < 0.05 ),respectively. The villus length and intestinal wall thickness of jejunum of Rex rabbits in group C increased by 59.82% and 41.83% compared with group CK ( P <0.05),respectively,and the crypt depth of duodenum decreased by 30.52% compared with group CK ( P <0.05). However,different supplemental levels of fermented apple pomace had no significant effect on intestinal SIgA concentration ( P >0.05). The results indicate that supplementation of fermented apple pomace at 28.8% can improve the growth performance by promoting nutrient digestibility and intestinal mucosal morphology of Rex rabbits,and can decrease the diarrhea rate,but no harmful effect on intestinal SIgA concentration.
作者
吴灵丽
张凯
宋献艺
刘强
WU Lingli;ZHANG Kai;SONG Xianyi;LIU Qiang(College of Animal Science and Veterinary Medicine,Shanxi Agricultural University,Taigu 030801,China;Feed and Veterinary Medicine Research Institute of Shanxi Academy of Agricultural Sciences,Taiyuan 030032,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2019年第4期1857-1863,共7页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
中央引导地方科技发展专项(2017GA630002)
山西省重点研发计划(201603D221026-4)
山西省农业产业发展科技引领工程(2017CYYL17)
关键词
发酵苹果渣
獭兔
生长性能
养分消化率
小肠黏膜形态
fermented apple pomace
Rex rabbits
growth performance
nutrient digestibility
intestinal mucosal morphology