动物营养学报2016，Vol.28Issue(6)：1935-1944,10.DOI:10.3969/j.issn.1006-267x.2016.06.037
不同纤维和蛋白质水平饲粮对2岁焉耆马消化代谢、血浆生化指标及体增重的影响
Effects of Diets with Different Fiber and Protein Levels on Digestion and Metabolism, Plasma Biochemical Indices and Body Weight Gain of 2 Years Old Yanqi Horse
摘要
Abstract
This experiment mainly studied the effects of diets with different dietary fiber and protein levels on digestion and metabolism,plasma biochemical indices and body weight gain of 2 years old Yanqi horse,in order to provide the theoretical basis for scientific feeding of Yanqi horse.Twenty healthy Yanqi male horses with the age of 2 years and the average body weight of (254±14) kg were randomly divided into 2 groups,and each group had 6 horses.Used the method of staging group,trial groups Ⅰ and Ⅱ were arranged in stage Ⅰ,and trial groups Ⅲ and ⅣV were arranged in stage 2.Horses in the 4 groups were fed diets with different fiber and protein levels (the levels of fiber and protein in the diets were 73.52％ and 6.99％,68.82％ and 7.55％,67.32％ and 8.04％,64.21％ and 8.57％,respectively).The digestion and metabolism experiment lasted for 21 d,comprised a 15 d adaptation period and 6 d trial period.The results showed that the digestibility of nutrients of Yanqi horse all showed increasing trends with the dietary protein level increasing,the digestibility of dry matter (DM),organic matter (OM),calcium (Ca),phosphorus (P) of trail group Ⅳ was significantly higher than that in trial group Ⅰ (P＜0.05).In aspect of energy metabolism,digestible energy (DE) and metabolism energy (ME) of Yanqi horse were increased by increasing the dietary protein level,but there were no significant differences among trial groups (P＞0.05).In aspect of Ca and P metabolism,the intakes,retentions and retention rates of Ca and P and the outputs of feces Ca and feces P in trial groups Ⅱ,Ⅲ and Ⅳ were higher than those in trial group Ⅰ.Among them,the retention rates of Ca and P in trial group Ⅳ were increased by 44.34％ (P＜0.05) and 47.80％ (P＜0.05) compared with trial group Ⅰ,respectively.But increasing the dietary protein level had no significant effects on the contents of total protein (TP),albumin (ALB),globulin (GLB),urea nitrogen (UN) and glutamine (Gin) in plasma and body weight gain among all groups (P＞ 0.05).Therefore,increasing the dietary protein level can improve nutrient digestibility and retention,but cannot affect plasma biochemical indices and body weight gain,and the optimal levels of fiber and protein in the diet are 64.21％ and 8.57％,respectively.关键词
饲粮/焉耆马/纤维/蛋白质/消化代谢/血浆生化指标/体增重Key words
diet/Yanqi horse/fiber/protein/digestion and metabolism/plasma biochemical indices/body weight gain分类
农业科技引用本文复制引用
刘凯,赵芳,李晓斌,陈学济,阿尔斯林,杨开伦..不同纤维和蛋白质水平饲粮对2岁焉耆马消化代谢、血浆生化指标及体增重的影响[J].动物营养学报,2016,28(6):1935-1944,10.基金项目
“十二五”农村领域国家科技计划课题(2012BAD45B02) （2012BAD45B02）
