| 岩藻多糖对肉兔生长性能、血清生化指标及养分表观消化率的影响 |
| |
| 引用本文： | 张磊,韩雪林,张娟,李苏涛,史文娇,阳伏林.岩藻多糖对肉兔生长性能、血清生化指标及养分表观消化率的影响[J].草业学报,2021,30(10):159-168. |
| |
| 作者姓名： | 张磊 韩雪林 张娟 李苏涛 史文娇 阳伏林 |
| |
| 作者单位： | 福建农林大学动物科学学院，蜂学学院，福建 福州 350002 |
| |
| 基金项目： | 福建农林大学杰出青年科研人才计划项目(xjq201817);福建农林大学动物科学学院引进人才科研启动经费项目(71201801601) |
| |
| 摘 要： | 本试验旨在研究日粮中添加不同水平岩藻多糖对肉兔生长性能、屠宰性能、内脏器官指数、血清生化指标和养分表观消化率的影响，为岩藻多糖作为抗生素替代物在肉兔日粮中的应用提供理论依据。从200只35日龄健康断奶福建黄兔中选取36只体重相近的试验兔，采用单因素试验设计，随机分为4组，每组3个重复，每个重复3只。对照组饲喂基础日粮，试验Ⅰ、Ⅱ、Ⅲ组分别饲喂添加100、200和300 mg·kg-1岩藻多糖的日粮，预试期5 d，正试期22 d。结果表明：1）试验Ⅲ组末重、平均日采食量（ADFI）、平均日增重（ADG）显著高于对照组（P<0.05），料重比（F/G）显著低于对照组（P<0.05）。2）试验Ⅲ组宰前活重显著高于对照组（P<0.05）。其他各项指标均无显著差异（P>0.05）。3）各试验组胸腺指数均显著高于对照组（P<0.05）。各组间脾脏指数和圆小囊指数均无显著差异（P>0.05）。试验Ⅱ和Ⅲ组蚓突指数显著高于对照组（P<0.05）。其他各项指标均无显著差异（P>0.05）。4）试验Ⅲ组丙氨酸氨基转移酶（ALT）含量显著低于其他组（P<0.05）。试验Ⅰ和Ⅱ组低密度脂蛋白胆固醇（LDL）、胆固醇（CHO）含量显著低于对照组（P<0.05）。试验Ⅲ组超氧化物歧化酶（SOD）活性显著高于对照组（P<0.05）。各试验组丙二醛（MDA）含量均显著低于对照组（P<0.05），谷胱甘肽过氧化物酶（GSH-Px）活性均显著高于对照组（P<0.05），其中试验Ⅲ组显著高于Ⅰ组（P<0.05）。其他各项指标均无显著差异（P>0.05）。5）各试验组干物质（DM）、中性洗涤纤维（NDF）、粗灰分（Ash）表观消化率均显著高于对照组（P<0.05）。试验Ⅲ组酸性洗涤纤维（ADF）表观消化率显著高于对照组（P<0.05）。各组粗蛋白（CP）表观消化率均无显著差异（P>0.05）。综上所述，日粮中添加岩藻多糖可显著提高肉兔ADFI和ADG，显著降低F/G，提高内脏器官指数和抗氧化能力，同时显著提高日粮中DM、ADF、NDF和Ash表观消化率，在本试验条件下，添加水平为300 mg·kg-1时，效果最佳。
|
| 关 键 词： | 肉兔 岩藻多糖 生长性能 血清生化指标 养分表观消化率 |
| 收稿时间： | 2021-03-01 |
| 修稿时间： | 2021-05-08 |
Effects of fucoidan on the growth performance,serum biochemical indexes,and nutrient apparent digestibility of meat rabbits |
| |
| ZHANG Lei,HAN Xue-lin,ZHANG Juan,LI Su-tao,SHI Wen-jiao,YANG Fu-lin.Effects of fucoidan on the growth performance,serum biochemical indexes,and nutrient apparent digestibility of meat rabbits[J].Acta Prataculturae Sinica,2021,30(10):159-168. |
| |
| Authors: | ZHANG Lei HAN Xue-lin ZHANG Juan LI Su-tao SHI Wen-jiao YANG Fu-lin |
| |
| Institution: | College of Animal Science，College of Bee Science，Fujian Agriculture and Forestry University，Fuzhou 350002，China |
| |
| Abstract: | The aim of this experiment was to investigate the effects of dietary fucoidan at different levels on the growth performance， slaughter performance， internal organ indexes， serum biochemical indexes， and the apparent digestibility of nutrients in meat rabbits. The ultimate aim of this research was to provide a theoretical basis for the use of fucoidan as an antibiotic substitute in the diet of meat rabbits. Thirty-six healthy rabbits with similar body weight were selected from 200 weanling Fujian yellow rabbits at 35 days of age， and were randomly assigned to four groups （three replicates of three rabbits per group）. Rabbits in the control group were fed with a basal diet while those in experimental groups I， II， and III， were fed diets supplemented with 100， 200， and 300 mg·kg-1 fucoidan， respectively. The pre-trial period was 5 days and the experimental period was 22 days. The main findings were as follows： 1） The final body weight， average daily feed intake （ADFI）， and average daily gain （ADG） were significantly higher in group III than in the control group （P<0.05） and the feed to gain ratio （F/G） was significantly lower in group III than in the control group （P<0.05）. 2） The live weight before slaughter was significantly higher in group III than in the control group （P<0.05）； But the other indexes were not significantly different among the treatment groups and the control （P>0.05）. 3） The thymus index was higher in all of the experimental groups than in the control group （P<0.05）. The spleen index and round cyst index did not differ significantly among the treatment groups and the control （P>0.05）. The protrusion index was significantly higher in groups II and III than in the control group （P<0.05）； But the other indexes showed no significant differences among the treatment groups and the control （P>0.05）. 4） The levels of alanine aminotransferase were significantly lower in group III than in the other groups （P<0.05）. The levels of low-density lipoprotein cholesterol and cholesterol were significantly lower in groups I and II than in the control group （P<0.05）. The activity of superoxide dismutase was significantly higher in group III than in the control group （P<0.05）. The levels of malondialdehyde were significantly lower all in all the experimental groups than in the control group （P<0.05）. The activity of glutathione peroxidase was significantly higher in the treatment groups than in the control group （P<0.05） and significantly higher in group III than in group I （P<0.05）； No significant differences were detected for the other antioxidant indices （P>0.05）. 5） The apparent digestibility of dry matter （DM）， neutral detergent fiber （NDF）， and crude ash （Ash） were significantly higher in the experimental groups than in the control group （P<0.05）. The apparent digestibility of acid detergent fiber （ADF） was significantly higher in group III than in the control group （P<0.05）. The apparent digestibility of crude protein （CP） did not differ significantly among the treatment groups and the control. Together， these results show that dietary supplementation with fucoidan can significantly increase the ADFI and ADG， significantly decrease the F/G， improve internal organ indices and antioxidant capacity， and significantly improve the apparent digestibility of ADF， NDF， Ash， and DM in meat rabbits. On the basis of these results， the optimum dietary supplementation level of fucoidan for meat rabbits is 300 mg·kg-1. |
| |
| Keywords: | meat rabbits fucoidan growth performance serum biochemical indexes nutrient apparent digestibility |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《草业学报》浏览原始摘要信息 |
| 点击此处可从《草业学报》下载免费的PDF全文 |
