Effect of supplementing selenium yeast in diets of laying hens on egg selenium content.
Effect of supplementing selenium yeast in diets of laying hens on egg selenium content.
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DOI：
10.1093/ps/84.12.1900
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发表时间：
2005-12
期刊：
影响因子：
4.4
通讯作者：
P. Utterback;C. Parsons;I. Yoon;J. Butler
中科院分区：
文献类型：
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作者：
P. Utterback;C. Parsons;I. Yoon;J. Butler
用90只26周龄的海兰W-98蛋鸡进行8周龄的试验，研究了酵母硒作为产蛋鸡硒源的效果。在22周龄时，将母鸡置于低硒玉米-豆粕预试验日粮中，为期4周。在预试验期结束时，母鸡被放置在3个实验处理之一：低硒饮食没有补充（基础饮食），基础饮食中添加0.3 ppm的硒从亚硒酸钠，或基础饮食中添加0.3 ppm的硒从硒酵母。饮食中含有0.11，0.38，和0.34 ppm硒的基础，基础加亚硒酸钠，基础加硒酵母饮食，分别。试验日粮分别喂给10个重复组，每组3只母鸡，持续8周（26 ~ 34周龄）。在0、4和8周时分析鸡蛋中的硒水平（mg/kg全蛋）。0周时各处理组鸡蛋中的硒含量相似。4周龄和8周龄时，两种硒强化日粮的鸡蛋硒含量均显著高于低硒日粮的鸡蛋（P < 0.01）。硒酵母日粮的鸡蛋硒含量在4周和8周时也显著高于亚硒酸钠日粮（P < 0.01）。硒酵母导致鸡蛋硒浓度增加了4.8倍，相比之下，在8周时，亚硒酸钠饮食比未补充饮食增加了2.8倍（0.065，0.182和0.311 ppm的控制，亚硒酸钠，硒酵母饮食，分别）。处理组之间的产蛋量、蛋重、采食量或死亡率无差异。本研究结果表明，在蛋鸡日粮中添加硒酵母对提高鸡蛋含硒量是十分有效的。
An 8-wk experiment was conducted using 90 Hy-Line W-98 hens (26 wk of age) to evaluate the use of organic Se from Se yeast as an Se source for laying hens. At 22 wk of age, the hens were placed on a low Se corn-soybean meal pretest diet for 4 wk. At the end of the pretest period, hens were placed on 1 of 3 experimental treatments; the low Se diet without supplementation (basal diet), basal diet with 0.3 ppm of Se added from sodium selenite, or basal diet with 0.3 ppm of Se added from Se yeast. Diets contained 0.11, 0.38, and 0.34 ppm Se for basal, basal plus sodium selenite, and basal plus Se yeast diets, respectively. The experimental diets were each fed to 10 replicate groups of 3 hens for 8 wk (26 to 34 wk of age). Selenium levels in eggs (mg/kg of whole egg) were analyzed at 0, 4, and 8 wk. Egg Se contents at 0 wk were similar among treatments. Eggs from hens fed the 2 Se-fortified diets had higher (P < 0.01) Se concentrations than did eggs from hens fed the low Se diet at 4 and 8 wk. The Se yeast diet also yielded levels of egg Se that were significantly higher (P < 0.01) than those from the sodium selenite diet at 4 and 8 wk. The Se yeast resulted in a 4.8-fold increase in egg Se concentration compared with a 2.8-fold increase for the sodium selenite diet over the unsupplemented diet at 8 wk (0.065, 0.182, and 0.311 ppm for the control, sodium selenite, and Se yeast diets, respectively). There were no differences in egg production, egg weight, feed intake, or mortality among treatments. Results of this study indicate that use of Se yeast in laying hens diets is very effective for increasing the Se content of eggs.