中文摘要：

本试验旨在研究硒代蛋氨酸对肥育猪生产性能和肉品质的影响。选用64头体重约60kg的杜×长×大三元杂交肥育猪，随机分为4个处理，各处理饲粮中分别添加0（空白对照组）、0．15和0．30mg／kg硒代蛋氨酸硒、0．30mg／kg亚硒酸钠硒，试猪体重达95k左右结束试验。结果表明：1）饲粮添加不同水平硒代蛋氨酸或亚硒酸钠均未改善肥育猪平均日增重、平均日采食量、料重比（P〉0．05）；2）饲粮添加不同水平硒代蛋氨酸或亚硒酸钠均未显著影响肥育猪背最长肌剪切力、肌内脂肪含量和滴水损失（P〉0．05）；各硒处理宰后12h背最长肌pH均显著高于对照组（P〈0．05）；与对照组相比，添加硒代蛋氨酸或亚硒酸钠显著降低了宰后不同时间点肉色亮度（L^＊）值（P〈0．05），提高了肉色红度（a^＊）值（P〈0．05），0．15mg／kg硒代蛋氨酸硒处理也显著降低了宰后12h肉色黄度（b^＊）值（P〈0．05）；3）添加0．30mg／kg硒代蛋氨酸硒显著降低了背最长肌中乳酸含量（P〈0．05）；0．30mg／kg硒代蛋氨酸硒处理和0．30mg／kg亚硒酸钠硒处理的氧合肌红蛋白含量均极显著高于对照组（P〈0．01）和显著高于0．15mg／kg硒代蛋氨酸硒组（P〈0．05）。以上试验结果提示，在肥育猪日粮中添加0．15～0．30mg／kg硒代蛋氨酸硒对改善猪肉肉色十分有利。

英文摘要：

：The experiment was conducted to investigate the effects of dietary selenomethionine （Se-Met） supplementation on performance and meat quality of finishing pigs. Sixty-four crossbred （Duroc × Landrace × Largewhite） pigs （initial BW, 60 kg） were randomly allotted to four treatments according to a randomized complete block design. Pigs were fed corn-soybean meal-based diets supplemented with 0 （control）, 0.15 and 0.30 mg/kg Se from Se-Met, 0.30 mg/kg Se from sodium selenite （SS）, respectively. One barrow per pen was slaughtered when average body weight of all the pigs reached about 95 kg. Results showed that 1） there was no significant difference in average daily gain, average daily feed intake, feed ： gain ratio among all treatments （P〉0.05）; 2） shear force, intramuscular fat content and drip loss of longissimus dorsi muscle were not affected by Se addition （P〉0.05）; all Se-added treatments presented significantly higher pH value at 12 h post-slaughter than the control （P〈0.05）; meat color lightness （L^＊） value was significantly decreased and redness （a^＊） value was significantly improved at different time points post-slaughter in all Se-added treatments in comparation with the control （P〈0.05）, and also 0.15 mg/kg Se （Se-Met） supplementation significantly decreased meat color yellowness （b ^＊） value at 12 h post-slaughter （P〈0.05） ; 3） lactic acid content of longissimus dorsi muscle was significantly decreased in 0.30 mg/kg Se （Se-Met） treatment compared with the control （P〈0.05）. 0. 30 mg/kg Se （Se-Met） and SS treatments significantly increased oxymyoglobin content compared with the control （P〈0.01） and 0.15 mg/kg Se （Se-Met） treatment （P〈0.05）. The results above suggested that diets supplemented with 0. 15-0.30 mg/kg Se （Se-Met） can significantly improve meat color of finishing pigs.