动物营养学报2017，Vol.29Issue(7)：2565-2574,10.DOI:10.3969/j.issn.1006-267x.2017.07.042
饲粮非纤维性碳水化合物/中性洗涤纤维对黔北麻羊瘤胃发酵参数、血浆生化指标和养分消化率的影响
Effects of Non-Fiber Carbohydrate to Neutral Detergent Fiber Ratio on Rumen Fermentation Parameters, Plasma Biochemical Indexes and Nutrient Digestibility of Qianbeima Goats
摘要
Abstract
The present study was conducted to investigate the effects of non-fiber carbohydrate to neutral detergent fiber ratio (NFC/NDF) on rumen fermentation parameters, plasma biochemical indexes and nutrient digestibility of Qianbeima goats.Six healthy adult Qianbeima goats were selected and allocated to 3 groups with 2 replicates per group and 1 goat per replicate using 3×3 Latin square design.Trial group Ⅰ, trial group Ⅱ, and trial group Ⅲ were fed diet with varying NFC/NDF at 2.14∶1.00, 1.05∶1.00 and 0.40∶1.00 (measured values), respectively.The trial lasted for 45 d consisted of 3 periods with 10 d of pre-trial period and 5 d trial period each.The detecting indexes were as follows: dietary nutrient digestibility, rumen fermentation parameters (pH, buffer capacity, ammonia nitrogen and volatile fatty acid concentrations, and cellulose activity) and plasma biochemical indexes [the contents of lipopolysaccharide, albumin and urea nitrogen glucose, and the activities of hydrogen peroxidase, glutamic-oxal(o)acetic transaminase and superoxide dismutase and glutathione peroxidase].The results showed as follows: 1) there was no significant difference for dry matter intake among 3 groups (P>0.05);trial group Ⅲ showed significantly lower nutrient digestibility compared with trial group Ⅰ and trial group Ⅱ (P<0.05).2) Trial group Ⅰ resulted in significantly decreased rumen fluid pH over trial group Ⅱ and trial group Ⅲ (P<0.05);trial group Ⅲ significantly increased rumen buffer capacity compared with trial group Ⅰ (P<0.05), but significantly decreased cellobiase activity and acetic acid concentration compared with trial group Ⅰ(P<0.05), and also significantly decreased total volatile fatty acids and butyrate concentrations compared with the other two groups (P<0.05);trial group Ⅰ, trial group Ⅱ and and trial group Ⅲ resulted in gradually increased acetate to propionate ratio and gradually decreased propionate concentration, and the differences among groups were significant (P<0.05);the activities of carboxymethyl cellulose, xylanase and microcrystalline cellulose in rumen fluid were not significantly affected (P>0.05).3) Plasma lipopolysaccharide content was gradually significantly decreased in trial group Ⅰ, trial group Ⅱ and trial group Ⅲ (P<0.05), while there were no significant differences for other plasma biochemical indexes (P>0.05).It is indicated from the results that over-high NFC/NDF is not beneficial to rumen fermentation parameters and plasma biochemical index of Qianbeima goats, and 1.05∶1.00 is the appropriate level under the conditions of the present study.关键词
非纤维性碳水化合物/中性洗涤纤维/瘤胃发酵参数/血浆生化指标/养分消化率/黔北麻羊Key words
non-fiber carbohydrate to neutral detergent fiber ratio/rumen fermentation parameter/plasma biochemical index/nutrient digestibility/Qianbeima goat分类
农业科技引用本文复制引用
赵鹏,韩娥,吴文旋,吴佳海,朱伦琴,莘海亮,袁鑫,杨春红,杨康,孙伦..饲粮非纤维性碳水化合物/中性洗涤纤维对黔北麻羊瘤胃发酵参数、血浆生化指标和养分消化率的影响[J].动物营养学报,2017,29(7):2565-2574,10.基金项目
国家自然科学基金(31360563) （31360563）
贵州山区牧草产业化生产技术研究集成与应用(黔科合重大专项字[2014]6017号) （黔科合重大专项字[2014]6017号）
贵州大学科技兴村人才培育基地建设项目 （）
黔东南科合J字[2016]015号 （）
