动物营养学报2017，Vol.29Issue(12)：4334-4341,8.DOI:10.3969/j.issn.1006-267x.2017.12.013
饲粮中硒添加水平对产蛋高峰期临武鸭产蛋性能、蛋品质、血清抗氧化指标和蛋硒含量动态变化的影响
Effects of Selenium Supplemental Level on Laying Performance, Egg Quality, Serum Antioxidant Indices and Dynamic Change of Egg Selenium Content of Linwu Ducks during Peak Laying Period
摘要
Abstract
This experiment was conducted to study the effects of selenium supplemental level on laying per-formance, egg quality, serum antioxidant indices and dynamic change of egg selenium content of Linwu ducks during peak laying period.Two hundred 29-week-old healthy Linwu ducks with a similar laying rate and in peak laying period were randomly assigned to 5 groups with 5 replicates in each group and 8 ducks per repli-cate.The ducks in control group were fed a basal diet without adding selenium source and the measured value of selenium content was 0.15 mg/kg, while the ducks in groupsⅠ,Ⅱ,Ⅲ and Ⅳ were fed the basal diet sup-plemented with 0.10, 0.20, 0.40 and 0.80 mg/kg selenium in forms of selenium yeast, respectively.The ex-perimental diets were fed with 35 d for each group, then stop to supplement selenium and the basal diet were fed within 10 days.The results showed as follows: 1) dietary selenium supplemental level had no significant effects on the indices of laying performance and egg quality of laying duck ( P>0.05) .2) Compared with the control group and groupⅠ, supplementation of 0.40 and 0.80 mg/kg selenium could significantly increase the serum selenium and glutathione ( GSH) contents, and glutathione peroxidase ( GSH-Px) and superoxide dis-mutase (SOD) activities (P<0.05), while significantly decrease the serum malonaldehyde (MDA) content ( P<0.05) .3) As the experimental days increasing, the egg selenium content in the control group and groupⅠ showed no significant change ( P>0.05) , the egg selenium content in the groupsⅡ,Ⅲand Ⅳshowed in-crease firstly and then decrease trend, and those groups reached peak in the test day 9.The egg selenium con-tent in the groups Ⅱ,Ⅲ an Ⅳ was significantly higher than that in the control group and group Ⅰat the test day 7, 9, 13, 17, 21, 28 and 35.Stop to feed selenium supplementation diets at day 1 to 4, the egg selenium content in groupsⅡ,Ⅲ and Ⅳwere still significantly higher than that in the control group ( P<0.05) .Stop to feed selenium supplementation diets at day 5 to 8, the egg selenium content in groups Ⅲ and Ⅳ was signifi-cantly higher than that in control group ( P<0.05) .Stop to feed selenium supplementation diets at day 9, the egg selenium content of all groups was recovery to the same level with control group ( P>0.05 ) .In conclu-sion, the laying performance and egg quality of Linwu duck during peak laying period are not affected by dif-ferent selenium supplemental level; antioxidant capacity, serum selenium content and egg selenium content of Linwu duck during peak laying period can be improved by supplementation of 0.40 and 0.80 mg/kg selenium in the form of yeast selenium.Supplementation of 0.40 and 0.80 mg/kg selenium can prolong the retention of egg.Comprehensive consideration of all the factors, the optimum selenium supplemental level of Linwu ducks in peak laying period is 0.40 mg/kg.关键词
酵母硒/抗氧化能力/蛋硒含量/临武鸭Key words
yeast selenium/antioxidant capacity/egg selenium content/Linwu ducks分类
农业科技引用本文复制引用
黄璇,李闯,蒋桂韬,张旭,王向荣,胡艳,刘伯承,戴求仲..饲粮中硒添加水平对产蛋高峰期临武鸭产蛋性能、蛋品质、血清抗氧化指标和蛋硒含量动态变化的影响[J].动物营养学报,2017,29(12):4334-4341,8.基金项目
国家水禽产业技术体系建设专项资金(CARS-43-39) （CARS-43-39）
中国农业科学院农业科学与技术创新工程专项资金(ASTIP-IBFC02) （ASTIP-IBFC02）
湖南畜禽安全生产协同创新中心专项资金( CICAPS) （ CICAPS）
