| 饲粮中核黄素添加水平对生长獭兔肉品质、毛囊发育和免疫性能的影响 |
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| 引用本文： | 刘磊,郑琛,李福昌,孙海涛.饲粮中核黄素添加水平对生长獭兔肉品质、毛囊发育和免疫性能的影响[J].动物营养学报,2017,29(3). |
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| 作者姓名： | 刘磊 郑琛 李福昌 孙海涛 |
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| 作者单位： | 1. 山东农业大学动物科技学院,泰安,271018;2. 山东省农业科学院畜牧兽医研究所,济南250100;山东省畜禽疫病防治与繁育重点实验室,济南250100 |
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| 基金项目： | 现代农业产业技术体系建设专项，山东省农业重大应用技术创新课题，山东农业大学青年科技创新基金项目，中国博士后科学基金，山东农业大学博士后科学基金，山东省现代农业产业技术体系特种经济动物创新团队建设项目 |
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| 摘 要： | 本试验旨在研究饲粮中核黄素添加水平对生长獭兔肉品质、毛囊发育和免疫性能的影响。选择体重相近的3月龄獭兔160只,随机分为4组,每组40个重复,每个重复1只兔。各组分别饲喂在基础饲粮中添加0(对照)、3、6和12 mg/kg核黄素的饲粮。预试期7 d,正试期53 d。结果表明:与对照组相比,饲粮中添加6、12 mg/kg核黄素显著降低了獭兔肌肉的滴水损失(P0.05),饲粮中添加3、6、12 mg/kg核黄素显著提高了獭兔皮肤中总毛囊密度(P0.05),饲粮中添加3、6 mg/kg核黄素显著提高了獭兔皮肤中初级毛囊密度(P0.05),饲粮中添加6、12 mg/kg核黄素显著提高了獭兔皮肤中次级毛囊密度(P0.05),饲粮中添加3、6 mg/kg核黄素显著降低了獭兔皮肤中次级毛囊密度/初级毛囊密度(P0.05)。饲粮中核黄素添加水平对獭兔的胸腺重、胸腺指数及血清免疫球蛋白G、免疫球蛋白A、白细胞介素-2含量影响显著(P0.05),且均随着饲粮中核黄素添加水平的升高呈先增加后降低的趋势,并均在6 mg/kg添加组中达到最大值,显著高于对照组(P0.05)。由此可见,3~5月龄生长獭兔饲粮中核黄素适宜添加水平为6 mg/kg(实际测定饲粮中核黄素水平为8.35 mg/kg)。
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| 关 键 词： | 獭兔 核黄素 肉品质 毛囊发育 免疫性能 |
Effects of Dietary Riboflavin Supplemental Level on Meat Quality,Hair Follicle Development and Immune Performance of Growing Rex Rabbits |
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| LIU Lei,ZHENG Chen,LI Fuchang,SUN Haitao.Effects of Dietary Riboflavin Supplemental Level on Meat Quality,Hair Follicle Development and Immune Performance of Growing Rex Rabbits[J].Acta Zoonutrimenta Sinica,2017,29(3). |
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| Authors: | LIU Lei ZHENG Chen LI Fuchang SUN Haitao |
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| Abstract: | This experiment was conducted to investigate the effects of dietary nicotinic acid supplemental level on meat quality,hair follicle development and immune performance of growing Rex rabbits.A total of 160 three-month-old Rex rabbits with similar body weight were randomly divided into 4 groups with 40 replicates per group and 1 rabbit per replicate.Rabbits in the control group were fed a basal diet,and the others in the experimental groups were fed the experimental diets supplemented with 3,6 and 12 mg/kg riboflavin,respectively.The pre-test period lasted for 7 days,and the experimental period lasted for 53 days.The results showed that compared with the control group,dietary supplemented with 6 and 12 mg/kg riboflavin significantly reduced the meat drip loss of Rex rabbits (P＜0.05),dietary supplemented with 3,6 and 12 mg/kg riboflavin significantly increased the skin total hair follicles density of Rex rabbits (P＜0.05),dietary supplemented with 3 and 6 mg/kg riboflavin significantly increased the skin primary hair follicles density of Rex rabbits (P ＜ 0.05),and dietary supplemented with 6 and 12 mg/kg riboflavin significantly increased the skin secondary hair follicles density of Rex rabbits (P＜0.05),and dietary supplemented with 6 and 12 mg/kg riboflavin significantly decreased the ratio of secondary hair follicles density to primary hair follicles density of Rex rabbits (P＜ 0.05).Dietary riboflavin supplemental level significantly affected the thymus weight,thymus index and the content of immunoglobulin G,immunoglobulin A and interleukin 2 in serum of Rex rabbits (P＜0.05),and all the above indices were showed a firstly increase then decrease tendency with dietary riboflavin supplemental level increasing,and got the max value in the 6 mg/kg supplemental group,which significantly higher than those in the control group (P＜0.05).In conclusion,the suitable dietary riboflavin supplement level of growing Rex rabbits aged from 3 to 5 months is 6 mg/kg (measured dietary riboflavin level is 8.35 mg/kg). |
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| Keywords: | Rex rabbits riboflavin meat quality hair follicle development immune performance |
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