动物营养学报2017，Vol.29Issue(7)：2440-2447,8.DOI:10.3969/j.issn.1006-267x.2017.07.028
酵母硒和纳米硒对育肥后期乳鸽生长性能、肉中微量元素含量及血清抗氧化指标的影响
Effects of Selenium Yeast and Nano-Selenium on Growth Performance, Meat Trace Element Contents and Serum Antioxidant Indices of Squabs in Latter Finishing Period
摘要
Abstract
This experiment was conducted to study the effects of selenium yeast (SY) and nano-selenium (NS) on growth performance, meat trace element contents and serum antioxidant indices of squabs in latter finishing period.A total of 210 healthy 21-day-old King pigeons were selected and randomly divided into 7 groups with 3 replicates per group of 10 squabs per replicate.A 2×4 factors random design was employed in this trail, including 2 sources (SY and NS) and 4 levels [0 (control), 0.1, 0.3 and 0.5 mg/kg] of selenium (Se).The pretrial lasted for 3 d, and the trial lasted for 7 d.The results showed as follows: 1) there were no significant differences in average daily feed intake, average daily gain and feed to meat ratio of squabs (P>0.05).2) Compared with control group, the supplementation of Se significantly increased Se content in meat of squabs (P<0.05);Se content in meat was increased with the increase of Se supplemental level;there was a significant interaction between Se sources and Se level about Se content in meat (P<0.05);compared with control group, Se content in meat of groups 0.1, 0.3 and 0.5 mg/kg of SY was significantly increased by 28.72%, 62.09%, 106.05% (P<0.05), respectively, and that of groups 0.1, 0.3 and 0.5 mg/kg of NS was significantly increased by 19.83%, 26.12% and 45.65% (P<0.05), respectively;the content of Se in meat of SY group was significantly higher than that in NS group (P<0.05).3) Compared with control group, the activities of catalase, total superoxide dismutase, glutathione peroxidase and total antioxidant capacity in serum of groups 0.3 and 0.5 mg/kg of SY and NS were significantly increased (P<0.05), and the content of malondialdehyde in serum was significantly decreased (P<0.05).Compared with control group and 0.1 mg/kg Se group, catalase activity and total antioxidant capacity in serum of 0.3 and 0.5 mg/kg Se groups were significantly increased (P<0.05), and serum content of malondialdehyde was significantly decreased (P<0.05).In conclusion, dietary supplementation of SY and NS both can significantly enhance serum antioxidant capability and increase the content of Se in meat of squabs in latter finishing period.关键词
乳鸽/酵母硒/纳米硒/生长性能/微量元素/抗氧化Key words
squab/selenium yeast/nano-selenium/growth performance/trace elements/antioxidant分类
农业科技引用本文复制引用
曲湘勇,陈继发,徐勋,何亮,方全民..酵母硒和纳米硒对育肥后期乳鸽生长性能、肉中微量元素含量及血清抗氧化指标的影响[J].动物营养学报,2017,29(7):2440-2447,8.基金项目
湖南农业大学产学研合作项目(13098) （13098）
湖南畜禽安全生产协同创新中心专项资金(CICAPS) （CICAPS）
