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(P<0.05),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(P<0.05),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(P<0.05),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(P<0.05),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(P<0.05)。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(P<0.05),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(P<0.05)。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)。
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 ] rabbit per replicate. Rabbits in the control group were fed a basal diet, and the others in the ex- perimental groups were fed the experimental diets supplemented with 3, 6 and 12 mg/kg riboflavin, respective- ly. 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 re- duced 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 signifi- cantly 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).
出处
《动物营养学报》
CAS
CSCD
北大核心
2017年第3期836-842,共7页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
现代农业产业技术体系建设专项(CARS-44-B-1)
山东省农业重大应用技术创新课题(肉
獭兔高效高产技术研究
集成与推广)
山东农业大学青年科技创新基金项目(2015-2016)
山东农业大学博士后科学基金(2015-2017)
中国博士后科学基金(2015M58061)
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(SDAIT-21-12)
关键词
獭兔
核黄素
肉品质
毛囊发育
免疫性能
Rex rabbits
riboflavin
meat quality
hair follicle development
immune performance