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

发布时间：2018-05-22 12:21

本文选题：酵母硒 + 抗氧化能力　；参考：《动物营养学报》2017年12期

【摘要】：本试验旨在研究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。试验选用29周龄体况良好、产蛋率接近的正处于产蛋高峰期的临武鸭200只,随机分为5组,每组5个重复,每个重复8只。对照组饲喂基础饲粮(不额外补充硒源,实测硒含量为0.15 mg/kg)45 d,Ⅰ组、Ⅱ组、Ⅲ组、Ⅳ组分别在基础饲粮中以酵母硒形式添加0.10、0.20、0.40、0.80 mg/kg的硒,饲喂35 d添加硒饲粮后改喂基础饲粮10 d。结果显示:1)饲粮中硒添加水平对蛋鸭产蛋性能和蛋品质各指标均无显著影响(P0.05)。2)与对照组和Ⅰ组相比,饲粮中添加0.40和0.80 mg/kg的硒可以显著提高蛋鸭血清中硒和谷胱甘肽(GSH)含量以及超氧化物歧化酶(SOD)和谷胱甘肽过氧化物酶(GSH-Px)活性(P0.05),显著降低血清中丙二醛(MDA)含量(P0.05)。3)随试验天数的增加,对照组和Ⅰ组蛋硒含量无显著变化(P0.05),而Ⅱ组、Ⅲ组、Ⅳ组蛋硒含量均呈现先升高后降低的趋势,且均在试验第9天达到峰值。试验第7、9、13、17、21、28和35天,Ⅱ组、Ⅲ组、Ⅳ组蛋硒含量显著高于对照组和Ⅰ组(P0.05);停喂添加硒饲粮的第1~4天,Ⅱ组、Ⅲ组、Ⅳ组蛋硒含量仍显著高于对照组(P0.05);停喂添加硒饲粮的第5~8天,Ⅲ组和Ⅳ组蛋硒含量显著高于对照组(P0.05);停喂添加硒饲粮的第9天,各试验组蛋硒含量均衰减至与对照组相同水平(P0.05)。由此可见,饲粮中添加不同水平的酵母硒形式的硒对产蛋高峰期临武鸭的产蛋性能和蛋品质均无不良影响。饲粮中添加0.40和0.80 mg/kg酵母硒形式的硒可以提高产蛋高峰期临武鸭的蛋硒含量、血清硒含量和抗氧化能力,延长蛋硒的存留时效。综合考虑各因素,产蛋高峰期临武鸭饲粮中硒(以酵母硒形式添加)的适宜添加水平为0.40 mg/kg。
[Abstract]:The purpose of this study was to study the effects of dietary selenium supplementation on the egg laying performance, egg quality, serum antioxidant index and the dynamic changes of egg selenium content at the peak period of laying at the peak period of egg production. The experiment selected 200 Linwu ducks, which were in the peak period of egg production at 29 weeks of age, and were randomly divided into 5 groups, 5 repetitions in each group, and 8 repeated each. The control group was fed with basic diet (no additional selenium source, the measured selenium content was 0.15 mg/kg) 45 D, and group I, group II, group III, and group IV supplemented selenium in yeast selenium form in the basal diet, feeding 35 d supplemented with selenium diet after feeding the basal diet 10 d. results showed: 1) the egg laying ability of selenium supplementation level on the egg ducks in the diet. Compared with the control group and the group I, the selenium and the glutathione (GSH) content in the serum of egg ducks and the activity of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) (P0.05) were significantly increased in the diet of the duck, and the serum malondialdehyde (MDA) was significantly reduced in the diet, compared with the control group and the group I. The selenium and the selenium and glutathione (GSH-Px) activity (P0.05) were significantly increased in the diet of the egg ducks. Content (P0.05).3) with the increase of test days, the content of egg selenium in the control group and group I did not change significantly (P0.05), while in group II, group III and group IV, the content of egg selenium increased first and then decreased, and all reached the peak in the ninth day. The egg selenium content in group II, group III and group IV was significantly higher than that of the control group and group I (P0 .05); the content of Se in group II, group III and group IV was still significantly higher than that of control group (P0.05), and the content of Se in group III and group IV was significantly higher than that of control group (P0.05), and the content of Se in group III and group IV was significantly higher than that of the control group (P0.05), and the content of selenium in each test group attenuated to the same level as that of the control group (P0.05) at the ninth day of supplementation of selenium diet (P0.05). It can be seen that the selenium form of selenium in different levels of selenium in the diet had no adverse effects on the laying performance and egg quality of the ducks at the peak period of egg production. The selenium content of 0.40 and 0.80 mg/kg yeast selenium supplemented in the diet could improve the egg selenium content, serum selenium content and antioxidant capacity, and prolong the retention and aging of egg selenium at the peak period of laying. Taking all factors into account, the optimum level of selenium added to the Linwu duck diet (added in yeast selenium form) is 0.40 mg/kg..
【作者单位】：湖南省畜牧兽医研究所动物营养与饲养技术研究室;湖南畜禽安全生产协同创新中心;中国农业科学院麻类研究所;
【基金】：国家水禽产业技术体系建设专项资金(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) 湖南畜禽安全生产协同创新中心专项资金(CICAPS)
【分类号】：S834.5

【相似文献】