Correlation Effects Of Nano Selenium And Conjugated Linoleic Acid On The Performance, Lipid Metabolism And Immune System Of Male Moghani Lambs
IRANIAN JOURNAL OF APPLIED ANIMAL SCIENCE(2019)
摘要
This study was carried out to evaluate the effects of nano selenium (nano-Se) and conjugated linoleic acid (CLA) on performance, biometric and blood parameters and selenoprotein W1 (SEPW1) and lipid gene expression in male Moghani lambs. Thirty male Moghani lambs, 3-months-old and weighing 30 +/- 0.25 kg, were used in completely randomized design in a 2 x 3 factorial arrangement with dietary supplemental the CLA (0 and 15 g/kg DM) and nano-Se (0, 1 and 2 mg/kg DM). The lambs were slaughtered on day 90 (end of experiment). Feeding a mixture of CLA and nano-Se tended to reduce the body weight of lambs comparing to the control group. The experimental diets had no impact on biometric parameters. Some blood parameters like high density lipoprotein (HDL), low density lipoprotein (LDL), thyroxine (T4), triiodothyronine (T3) and glutathione peroxidase (GPx) and glutathione peroxidase depended on dietary nano-Se supplementation (P<0.05); but glucose, triglycerides (TG), very low density lipoprotein (VLDL), total protein (TP) and cholesterol had no considerable effects. The results of qPCR analysis showed that nano-Se supplemental at highest level (2 mg/kg DM) increased gene expression of GPX1 and SEPW1 in liver (P<0.05). Dietary inclusion of CLA enhanced the peroxisome proliferator-activated receptor gamma expression and decreased stearoyl COA desaturase 1 genes in tail (P<0.01). In conclusion, nano-Se and CLA differently increased the gene expression in liver and tail and had good impacts on some blood parameters; suggesting that nano-Se and CLA have not synergism interaction in the above parameters.
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关键词
conjugated linoleic acid, lambs, Moghani, nano selenium, performance
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