机构地区:[1]新疆农业大学动物科学学院,乌鲁木齐830052 [2]新疆农业科学院微生物应用研究所,新疆特殊环境微生物实验室,乌鲁木齐830091 [3]乌鲁木齐膳源农业科技有限公司,乌鲁木齐830052 [4]乌鲁木齐市米东区畜牧兽医站,乌鲁木齐830052
出 处:《动物营养学报》2021年第11期6548-6554,共7页CHINESE JOURNAL OF ANIMAL NUTRITION
基 金:自治区公益性科研院所基本科研业务费(KY2020105);新疆农业科学院科技创新重点培育专项(xjkcpy-2020005)。
摘 要:本试验旨在研究饲粮添加不同剂量的雨生红球藻藻粉对拜城油鸡生产性能、蛋品质和抗氧化性能的影响。试验选用体质健康、体重[(2.3±0.3)kg]相近、产蛋率[(50±2)%]相似的48周龄拜城油鸡480只,随机分为4个组,每组4个重复,每个重复30只鸡。对照组饲喂基础饲粮,试验组(试验Ⅰ~Ⅲ组)分别饲喂在基础饲粮基础上添加2、4和6 g/kg雨生红球藻藻粉(折合虾青素含量为0.1、0.2和0.3 g/kg)的饲粮。试验预试期3周,正试期8周。结果表明:1)与对照组相比,饲粮添加雨生红球藻藻粉对拜城油鸡平均日采食量、产蛋率和料蛋比均无显著影响(P>0.05)。2)与对照组相比,饲粮添加雨生红球藻藻粉对拜城油鸡平均蛋重、哈氏单位和蛋形指数均无显著影响(P>0.05);各试验组蛋黄颜色均极显著高于对照组(P<0.01);试验Ⅲ组蛋壳厚度显著高于对照组(P<0.05)。3)随着饲粮雨生红球藻藻粉添加剂量的提高,拜城油鸡血清谷胱甘肽过氧化物酶(GSH-Px)和超氧化物歧化酶活性(SOD)线性提高,而血清丙二醛(MDA)含量线性降低;其中,与对照组相比,试验Ⅱ组和试验Ⅲ组拜城油鸡血清GSH-Px活性均极显著提高(P<0.01),试验Ⅲ组血清SOD活性显著提高(P<0.05),各试验组血清MDA含量显著或极显著降低(P<0.05或P<0.01)。综上所述,饲粮添加雨生红球藻藻粉对拜城油鸡生产性能无显著影响,但可提高蛋黄颜色,增强机体抗氧化性能,并且呈剂量效应,推荐饲粮中雨生红球藻藻粉的适宜添加剂量为6 g/kg(含0.3 g/kg虾青素)。This experiment was conducted to investigate the effects of different doses of dietary Haematococcus pluvialis powder on the performance,egg quality and antioxidant capability of Baicheng oil chickens.A total of 480 Baicheng oil chickens of 48-week-old with similar body weight of(2.3±0.3)kg and laying rate of(50±2)%were randomly divided into 4 groups with 4 replicates per group and 30 chickens per replicate.Chickens in the control group were fed a basal diet,and those in the experimental groups(experimental groupsⅠtoⅢ)were fed the basal diet supplemented with 2,4 and 6 g/kg Haematococcus pluvialis powder(as 0.1,0.2 and 0.3 g/kg astaxanthin),respectively.The pre-trial period lasted for 3 weeks and the experimental period lasted for 8 weeks.The results showed as follows:1)compared with the control group,dietary Haematococcus pluvialis powder had no significant effects on the average daily feed intake,laying rate and feed to egg ratio of Baicheng oil chickens(P>0.05).2)Compared with the control group,dietary Haematococcus pluvialis powder had no significant effects on the average egg weight,Haugh unit and egg shape index of Baicheng oil chickens(P>0.05),the egg yolk color in the experimental groups was extremely significantly higher than that in the control group(P<0.01),and the eggshell thickness in the experimental groupⅢwas significantly higher than that in the control group(P<0.05).3)The activities of glutathione peroxidase(GSH-Px)and superoxide dismutase(SOD)in serum of Baicheng oil chickens were linearly increased,while the malondialdehyde content in serum was linearly decreased with the dietary Haematococcus pluvialis powder dose increasing.Compared with the control group,the serum GSH-Px activity of Baicheng oil chickens in the experimental groupsⅡandⅢwas extremely significantly increased(P<0.01),the serum SOD activity in the experimental groupⅢwas significantly increased(P<0.05),and the serum MDA content in all experimental groups was significantly or extremely significantly decreased(P<0.05 o
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