饲粮肌醇添加水平对2～4月龄生长獭兔生长性能、毛皮质量、免疫器官指数和营养物质利用率的影响  

Effects of Inositol Supplemental Level on Growth Performance,Fur Quality,Immune Organ Indices and Nutrient Availabilities of 2 to 4-Month-Old Growing Rex Rabbits

作　　者：周松涛[1] 谷子林[1] 吴峰洋 李冲[1] 戴冉[1] 巩耀进 刘亚娟 陈赛娟 

机构地区：[1]河北农业大学动物科技学院,保定071001 [2]河北省山区研究所,保定071001

出　　处：《动物营养学报》2016年第3期780-787,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家兔产业技术体系(CARS-44-B-3);河北省科技支撑计划(14236602D-6)

摘　　要：本试验旨在研究饲粮肌醇添加水平对2~4月龄生长獭兔生长性能、毛皮质量、免疫器官指数和营养物质利用率的影响。选取体重相近的2月龄生长獭兔88只,随机分成4组,每组22个重复,每个重复1只。Ⅰ组为对照组,饲喂基础饲粮,Ⅱ组、Ⅲ组、Ⅳ组为试验组,分别饲喂在基础饲粮中添加25、50、75 mg/kg肌醇的试验饲粮。试验期为60 d。结果表明：1）饲粮肌醇添加水平对生长獭兔平均日增重和料重比无显著影响（P〉0.05）。2）饲粮肌醇添加水平对生长獭兔毛皮面积、毛皮重量无显著影响（P〉0.05）,但对被毛密度、被毛长度有显著或极显著影响（P〈0.05或P〈0.01）。被毛长度以Ⅲ组最长,显著长于Ⅰ组（P〈0.05）,但与Ⅳ组无显著差异（P〉0.05）;被毛密度以Ⅳ组最大,极显著大于Ⅰ组和Ⅲ组（P〈0.01）,显著大于Ⅱ组（P〈0.05）。3）饲粮肌醇添加水平对生长獭兔脾脏指数无显著影响（P〉0.05）,胸腺指数随着肌醇添加水平的提高呈升高趋势（P〉0.05）。4）饲粮肌醇添加水平对生长獭兔粗纤维、中性洗涤纤维、酸性洗涤纤维利用率无显著影响（P〉0.05）,但对干物质、总能、粗蛋白质利用率有显著或极显著影响（P〈0.05或P〈0.01）。其中,干物质利用率以Ⅳ组最高,显著高于Ⅰ组（P〈0.05）;Ⅱ组的总能利用率显著高于Ⅰ组（P〈0.05）,Ⅳ组的总能利用率极显著高于Ⅰ组（P〈0.01）;Ⅱ组和Ⅳ组的粗蛋白质利用率显著高于Ⅰ组（P〈0.05）,Ⅲ组的粗蛋白质利用率极显著高于Ⅰ组（P〈0.01）。综合以上测定指标,在生长獭兔饲粮中适宜的肌醇添加水平为75 mg/kg。This experiment was conducted to study the effects of inositol supplemental level on growth performance,fur quality,immune organ indices and nutrient availabilities of 2 to 4-month-old growing Rex rabbits. A total of 88 two-month-old healthy growing Rex rabbits with the similar body weight were randomly divided into4 groups with 22 replicates per group and 1 rabbit per replicate. Group Ⅰ was used as control group and the rabbits were fed with a basal diet. Groups Ⅱ,Ⅲ,Ⅳ were used as experimental groups and the rabbits were fed with the basal diet plus 25,50 and 75 mg / kg inositol,respectively. The experiment lasted for 60 days.The results showed as follows： 1） dietary inositol supplemental level had no significant effects on average daily gain,average daily feed intake and feed / gain（ P〉0. 05）. 2） Dietary inositol supplemental level had no significant effects on fur area and fur weight（ P〉0. 05）,while it had significant effects on wool density and wool length（ P〈0. 05 or P〈0. 01）. The wool length in group Ⅲ was the longest,and it was significantly longer than that in group Ⅰ（ P〈0. 05）,but no significant difference was found between groups Ⅲ and Ⅳ（ P〉0. 05）; the wool density in group Ⅳ was the biggest,and it was significantly longer than that in groups Ⅰ（ P〈0. 05）,Ⅱ（ P〈0. 01） and Ⅲ（ P〈0. 05）. 3） Dietary inositol supplemental level had no significant effect on spleen index（ P〉0. 05）,but thymus index showed an increased trend with inositol supplemental level increasing（ P〉0. 05）. 4） Dietary inositol supplemental level had significant effects on the availabilities of dry matter,gross energy and crude protein（ P〈0. 05 or P〈0. 01）,while it had no significant effects on the availabilities of crude fiber,neutral detergent fiber and acid detergent fiber（ P〉0. 05）. The dry matter availability in group Ⅳ was the highest,which was significantly higher than that in group Ⅰ（ P〈0. 05）; the gross energy availa

关 键 词：肌醇 生长獭兔 生长性能 毛皮质量 营养物质利用率 

分 类 号：S816[农业科学—饲料科学]