赛乐硒对西门塔尔牛矿物质存留率的影响
Jiangxi Feed(2008)
Abstract
选用7头体重420kg,2.5岁的西门塔尔牛,采用7×7拉丁方设计,研究日粮添加赛乐硒(7.5、15和22.5mg硒/d)和亚硒酸钠(7.5、15和22.5mg硒/d)对日粮矿物质存留率的影响。结果表明:赛乐硒各组硒的表观存留率较亚硒酸钠组和对照组显著提高,钙、磷、锌和铜表观存留率较亚硒酸钠组提高。铁、钼和硫表观存留率无显著变化。赛乐硒组血清硒浓度较亚硒酸钠组显著提高,血清铁浓度无显著变化,赛乐硒组血清铜浓度增加。以上结果表明赛乐硒较无机硒能更有效促进矿物质的消化与利用,硒适宜添加量为7.5~15mg/d。
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