PDF(Pubmed)
Abstract：
This study aimed to explore the effects of selenized glucose (SeGlu) and Na selenite supplementation on various aspects of laying hens such as production performance, egg quality, egg Se concentration, microbial population, antioxidant enzymes activity, immunological response, and yolk fatty acid profile. Using a 2 × 2 factorial design, 168 laying hens at 27-wk of age were randomly divided into 4 treatment groups with 7 replications. Se source (Na selenite and SeGlu) and Se level (0.3 and 0.6 mg/kg) were used as treatments. When 0.3 mg SeGlu/kg was compared to 0.3 mg Na selenite/kg, the interaction findings revealed that 0.3 mg SeGlu/kg increased egg production percent and shell ash (P < 0.05). When compared to 0.3 mg Na selenite/kg, dietary supplementation with 0.3 and 0.6 mg SeGlu/kg resulted in an increase in albumen height, Haugh unit, and yolk color of fresh eggs (P < 0.05). SeGlu enhanced albumen height, Haugh unit, shell thickness (P < 0.01), albumen index, yolk share, specific gravity, shell ash (P < 0.05) of fresh eggs and shell thickness (P < 0.05) of stored eggs as compared to Na selenite. The interaction showed that 0.6 mg SeGlu/kg enhanced yolk Se concentration while decreasing malondialdehyde levels in fresh egg yolk (P < 0.05). SeGlu enhanced Se concentration in albumen and glutathione peroxidase activity in plasma (P < 0.05) as compared to Na selenite. 0.6 mg Se/kg increased lactic acid bacteria, antibody response to sheep red blood cells, and lowered ∑n-6 PUFA/ ∑n-3 PUFA ratio (P < 0.05). As a result, adding SeGlu to the feed of laying hens enhanced egg production, egg quality, egg Se concentration, fresh yolk lipid oxidation, and glutathione peroxidase enzyme activity.
摘要：
本研究旨在探讨硒化葡萄糖(SeGlu)和亚硒酸钠对蛋鸡生产性能等各方面的影响,鸡蛋质量,鸡蛋硒浓度,微生物种群,抗氧化酶活性，免疫反应，和蛋黄脂肪酸谱。使用2×2阶乘设计，将168只27周龄的蛋鸡随机分为4个处理组，重复7个。硒源（亚硒酸钠和SeGlu）和硒水平（0.3和0.6mg/kg）用作处理。当0.3mgSeGlu/kg与0.3mg亚硒酸钠/kg相比时，交互作用结果表明，0.3mgSeGlu/kg增加了产蛋率和壳灰（P<0.05）。当与0.3mg亚硒酸钠/kg相比时，饮食补充0.3和0.6mgSeGlu/kg导致蛋白高度增加，Haugh单位,新鲜鸡蛋的蛋黄颜色(P<0.05)。SeGlu增强蛋白高度，Haugh单位,壳厚(P<0.01),蛋白指数,蛋黄分享，比重,与亚硒酸钠相比，新鲜鸡蛋的壳灰（P<0.05）和储存鸡蛋的壳厚度（P<0.05）。交互作用表明，0.6mgSeGlu/kg提高了蛋黄中的硒浓度，同时降低了新鲜蛋黄中的丙二醛水平（P<0.05）。与亚硒酸钠相比，SeGlu提高了血浆中蛋白中硒的浓度和谷胱甘肽过氧化物酶的活性（P<0.05）。0.6mgSe/kg增加乳酸菌，对绵羊红细胞的抗体反应，降低∑n-6PUFA/∑n-3PUFA比值(P<0.05)。因此,在蛋鸡饲料中添加SeGlu可提高产蛋率，鸡蛋质量,鸡蛋硒浓度,新鲜蛋黄脂质氧化，和谷胱甘肽过氧化物酶活性。
