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

周松涛, 谷子林, 吴峰洋, 李冲, 戴冉, 巩耀进, 刘亚娟, 陈赛娟

doi:10.3969/j.issn.1006-267x.2016.03.018

动物营养学报 >

2016 , Vol. 28 >Issue 3: 780 - 787

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.03.018

特种经济动物营养 Special Economic Animal Nutrition

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

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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

周松涛(1989-),男,河北邢台人,硕士研究生,研究方向为动物营养与饲料科学。E-mail:zhousongtao520@yeah.net

收稿日期: 2015-10-13

网络出版日期: 2016-03-14

基金资助

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

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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

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1. College of Animal Science and Technology, Agricultural University of Hebei, Baoding 071001, China;
2. Mountainous Area Research Institute of Hebei Province, Baoding 071001, China

Received date: 2015-10-13

Online published: 2016-03-14

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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。

关键词： 肌醇; 生长獭兔; 生长性能; 毛皮质量; 营养物质利用率

本文引用格式

周松涛, 谷子林, 吴峰洋, 李冲, 戴冉, 巩耀进, 刘亚娟, 陈赛娟 . 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[J]. 动物营养学报, 2016 , 28(3) : 780 -787 . DOI: 10.3969/j.issn.1006-267x.2016.03.018

Abstract

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 into 4 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 availability in groups Ⅱ and Ⅳ was significantly higher than that in group Ⅰ (P<0.05 or P<0.01); the crude protein availability in groups Ⅱ, Ⅲ and Ⅳ was significantly higher than that in group Ⅰ (P<0.05 or P<0.01). Considering all indices of this experiment, the optimum dietary inositol supplemental level is 75 mg/kg for growing Rex rabbits.

Key words： inositol; growing Rex rabbits; growth performance; fur quality; nutrient availabilities

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