摘要
本试验旨在探讨饲粮中槲皮素对产蛋中后期蛋鸡蛋品质和脂代谢的影响。试验选用体重和产蛋率相近的320只46周龄健康的海兰褐蛋鸡,随机分为4组,每组8个重复,每个重复10只鸡。对照组饲喂玉米-豆粕型基础饲粮,试验组分别饲喂在基础饲粮中添加100、300和600 mg/kg槲皮素的试验饲粮。预试期1周,正试期10周。结果显示:1)与对照组相比,饲粮中添加100、300、600 mg/kg槲皮素均极显著提高了蛋壳厚度、蛋壳强度和蛋白高度(P<0.01),且蛋白高度和哈氏单位随槲皮素添加水平的提高呈先升高后下降的二次变化(P=0.004、P=0.034)。2)随槲皮素添加水平的提高,蛋鸡腹脂率呈先降低后升高的二次变化(P=0.012),而肝脏指数则呈线性降低趋势(P=0.095)。3)随槲皮素添加水平的提高,蛋鸡血小板数量有线性升高的趋势(P=0.075),而大型血小板比率则呈二次变化(P=0.028)。4)与对照组相比,饲粮中添加100、300和600 mg/kg槲皮素均显著降低了血清低密度脂蛋白胆固醇(LDL-C)、甘油三酯(TG)和游离脂肪酸(NEFA)含量(P<0.05),且添加300 mg/kg槲皮素还极显著降低了血清总胆固醇(TC)和葡萄糖(GLU)含量(P<0.01);此外,饲粮中添加100、300、600 mg/kg槲皮素均极显著降低了肝脏甘油三酯含量(P <0.01)。5)与对照组相比,饲粮中添加100、300、600 mg/kg槲皮素均极显著提高血清脂联素和瘦素含量(P<0.01)。上述结果表明,在本试验条件下,饲粮中添加槲皮素可以调节机体脂代谢,降低产蛋中后期蛋鸡肝脏和腹部脂肪沉积,改善蛋品质,且以添加水平为300 mg/kg时效果最佳。
The purpose of this study was to investigate the effects of dietary quercetin on egg quality and lipid metabolism of laying hens during middle-late laying period. Three hundred and twenty 46-week-old healthy Hyline brown laying hens with similar body weight and laying rate were randomly divided into 4 groups with 8replicates per group and 10 hens per replicate. The hens in control group were fed a basal diet,and those in experimental groups were fed the basal diet supplemented with 100,300 and 600 mg/kg quercetin,respectively.The pre-feeding period lasted for 1 week,and the experimental period lasted for 10 weeks. The results showed as follows:1)compared with the control group,dietary supplemented with 100,300 and 600 mg/kg quercetin significantly increased the eggshell thickness,eggshell strength and albumen height(P<0.01),and the albumen height and Haugh unit had a quadratic change with quercetin supplemental level increasing(P<0.05),it was first increased and then decreased. 2)With the quercetin supplemental level increasing,the abdominal fat rate showed a quadratic change which was first decreased and then increased(P<0.05),while the liver index showed a linear decreasing trend(P = 0.095). 3)With the quercetin supplemental level increasing,the platelet count showed a linear increasing trend(P = 0.075),and the platelet-larger cell ratio had a quadratic change(P = 0.028). Compared with the control group,dietary supplemented with 100,300 and 600 mg/kg quercetin significantly decreased the serum low-density lipoprotein cholesterol,triglyceride and non-esterified fatty acid contents(P<0.01),and dietary supplemented with 300 mg/kg quercetin significantly decreased the serum total cholesterol and glucose contents(P<0.01). 4)With the quercetin supplemental level increasing,the serum total cholesterol and glucose were reduced significantly(P<0.01),and the serum low-density lipoprotein cholesterol,triglyceride and free fatty acid contents showed a linear-quadratic change(P<0.05). In addition,dietary supplemented with 1
作者
魏翊
刘永发
巩璐
扶佳欢
班志彬
呙于明
张炳坤
WEI Yi;LIU Yongfa;GONG Lu;FU Jiahuan;BAN Zhibin;GUO Yuming;ZHANG Bingkun(State Key Laboratory of Animal Nutrition,College of Animal Science and Technology,China Agricultural University,Beijing 100193,China;Jilin Academy of Agricultural Sciences,Changchun 130000,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2022年第5期2907-2917,共11页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
国家自然科学基金面上项目(32072750)。
关键词
产蛋中后期
槲皮素
海兰褐蛋鸡
蛋品质
脂代谢
middle-late laying period
quercetin
Hy-line brown laying hens
egg quality
lipid metabolism
