Feed Science Institute, College of Animal Science, Zhejiang University, No. 164, Qiutao North Road, Hangzhou, 310029, People's Republic of China.
Biol Trace Elem Res. 2011 Dec;144(1-3):705-14. doi: 10.1007/s12011-011-9111-0. Epub 2011 Jun 18.
An 8-week experiment was conducted using 540 48-week-old Lingnan Yellow broiler breeders to evaluate the effect of the sources and levels of selenium (Se) on reproduction and Se retention. After receiving basal diet for 8 weeks, breeders were randomly assigned to six dietary treatments and fed corn-soy-based diets supplemented with 0.15 or 0.30 mg/kg of Se from sodium selenite (SS) or from Se-enriched yeast (SY) or from selenomethionine (SM). The Se concentration of basal diet was 0.04 mg/kg of Se. With the increase of dietary Se level, hatchability decreased (P < 0.05), but the Se concentrations were elevated in liver, kidney, pancreas, and breast muscle of breeders, yolk and albumen, liver and breast muscle of developing embryos, and tissues (liver, kidney, pancreas, and breast muscle) of 1-day-old chicks (P < 0.01). Irrespective of the Se level, the Se concentrations in liver, kidney, pancreas, and breast muscle were greater (P < 0.01) in breeders fed SY or SM compared with breeders fed SS, and kidney from breeders fed SM had greater Se concentration than that from breeders fed SY (P < 0.01). Yolk and albumen from SM treatments also had the greatest Se concentrations (P < 0.01). The embryonic liver and breast muscle from SM treatments had higher (P < 0.01) Se concentrations than those of SS treatments. The Se concentrations in liver, kidney, and breast muscle of 1-day-old chicks were greater (P < 0.01) in SY or SM treatments compared with SS treatments, and there was a more significant increase in Se concentrations in kidney and breast muscle of 1-day-old chicks from SM treatments than those from SY treatments (P < 0.01). The results suggest that the Se retention efficiency of SM is higher than that of SY, which, in turn, is higher than that of SS for broiler breeders and their offspring.
一项为期 8 周的试验使用了 540 只 48 周龄的岭南黄肉鸡种鸡来评估硒（Se）的来源和水平对繁殖和 Se 保留的影响。种鸡接受基础日粮 8 周后，随机分配到 6 种日粮处理组，饲喂玉米-豆粕基础日粮，补充亚硒酸钠（SS）、富硒酵母（SY）或硒代蛋氨酸（SM），硒水平分别为 0.15 或 0.30mg/kg。基础日粮中的 Se 浓度为 0.04mg/kg。随着日粮 Se 水平的增加，孵化率降低（P<0.05），但种鸡的肝脏、肾脏、胰腺和胸肌、蛋黄和蛋清、胚胎肝脏和胸肌以及 1 日龄雏鸡的组织（肝脏、肾脏、胰腺和胸肌）中的 Se 浓度升高（P<0.01）。无论 Se 水平如何，饲喂 SY 或 SM 的种鸡的肝脏、肾脏、胰腺和胸肌中的 Se 浓度均显著高于饲喂 SS 的种鸡（P<0.01），饲喂 SM 的种鸡的肾脏中的 Se 浓度显著高于饲喂 SY 的种鸡（P<0.01）。SM 处理的蛋黄和蛋清的 Se 浓度也最大（P<0.01）。SM 处理的胚胎肝脏和胸肌的 Se 浓度显著高于 SS 处理的（P<0.01）。1 日龄雏鸡的肝脏、肾脏和胸肌中的 Se 浓度在 SY 或 SM 处理组中显著高于 SS 处理组（P<0.01），SM 处理组的肾脏和胸肌中 Se 浓度的增加显著高于 SY 处理组（P<0.01）。结果表明，SM 的 Se 保留效率高于 SY，而 SY 又高于 SS，对种鸡及其后代均如此。
