动物营养学报2011，Vol.23Issue(9)：1600-1607,8.DOI:10.3969/j.issn.1006-267x.2011.09.020
汞对蛋鸡产蛋性能、蛋品质及血清抗氧化指标的影响
Effect of Mercury on Laying Performance, Egg Quality and Serum Anti-oxidative Indices in Laying Hens
摘要
Abstract
This experiment was conducted to study the effect of dietary mercury pollution on laying performance , egg quality and serum anti-oxidative indices in laying hens and mercury residual in eggs. A total of 192 Babcock brown laying hens with 40 weeks of age were allocated to four treatments (control group, T1, T2, and T3), each of which included 3 replicates with 16 hens per replicate. Hens were fed the same basal diet contained 21. 56 jig/kg mercury. Mercury (from HgCl2) was added to the basal diet at 0, 1,3 and 9 mg/kg, respectively. The experiment lasted for 9 weeks. Results showed as follows; adding mercury for 9 weeks, 1) the average egg weight of T2 was significantly reduced (P<0. 05) ; the average daily feed intake was reduced with the increase of the supplemental level of mercury, but there was no significant difference among all treat ments ( P >0. 05). 2) Mercury concentration in eggs of the control group, T1, T2, and T3 was 0. 004 0, 0.010 0,0.026 6, and 0.054 4 mg/kg, respectively, which of T1, T2, and T3 was all significantly higher than that of the control group (P <0.05) , and there was a dose-effect relationship. 3) Shell thickness of T3 was decreased by 7.5% (P<0. 05), 11.9% (P<0.05) and 2.6% (P>0.05) compared with the control group, T1, and T2, respectively, and there was a dose-effect relationship. Yolk color of T3 was decreased by 31.1% compared with the control group (P <0.05) , and albumen height and Haugh unit of T2 were signifi cantly reduced (P <0. 05). 4) Malondialdehyde (MDA) content in serum of T2 and T3 was significantly higher than that of the control group ( P <0. 05) , and significantly increased as the mercury supplemental level in diets increased (P <0. 05). There was also a dose-effect relationship for MDA content in serum. In conclusion , The dietary mercury pollution can reduce the egg quality and remain in eggs, especially when the mercu ry supplemental level rises to 9 mg/kg, the mercury concentration in eggs will exceed the standard of GB 2762-1994. Meanwhile, mercury can cause lipid peroxidation and induce to oxidative stress to laying hens.关键词
汞/产蛋性能/蛋品质/抗氧化/蛋鸡Key words
mercury/ laying performance/ egg quality/ anti-oxidation/ laying hens分类
农业科技引用本文复制引用
唐飞江,邹晓庭,孙涛,黄辉龙,谢鹏..汞对蛋鸡产蛋性能、蛋品质及血清抗氧化指标的影响[J].动物营养学报,2011,23(9):1600-1607,8.基金项目
国家蛋鸡产业技术体系建设专项资金(nycytx41-g16) （nycytx41-g16）
