Mousaie Amir, Valizadeh Reza, Naserian Abbas Ali, Heidarpour Mohammad, Mehrjerdi Hossein Kazemi
Department of Animal Sciences, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, 9177948974, Iran,
Biol Trace Elem Res. 2014 Dec;162(1-3):113-23. doi: 10.1007/s12011-014-0162-x. Epub 2014 Nov 4.
The effects of selenium-methionine (Se-Met) and chromium-methionine (Cr-Met) supplementation on performance and response to transportation stress were studied on 24 Baluchi ewe lambs (18-20 weeks of age) for 9 weeks. The lambs were randomly assigned to four dietary treatments: (1) control; (2) 1.5 mg supplemental Se-Met/kg dry matter (DM) of diet; (3) 0.8 mg supplemental Cr-Met/kg DM of diet; and (4) 1.5 mg Se-Met plus 0.8 mg Cr-Met/kg DM of diet (Se-Cr-Met). At the commencement of week 8, a road transportation stress (TS) was carried out for 30 min. Lambs fed Cr-Met and Se-Cr-Met diets had higher feed intake than the control and Se-Met animals (P < 0.0001). Lambs on Cr-Met diet showed higher average daily gain (ADG) compared to the control group (P = 0.007). Se-Met and Cr-Met supplementation alone or in combination significantly (P < 0.05) reduced feed conversion ratio (FCR). The animals that received Se-Met (P = 0.014), Cr-Met (P = 0.005), and Se-Cr-Met (P = 0.003) supplemented diets had lower glucose concentration than the control. Lambs on Cr-Met had higher blood T3 concentration than control animals (P = 0.040), while Cr-Met (P = 0.039) and Se-Cr-Met (P = 0.032) supplementation increased triiodothyronine (T3) to thyroxin (T4) ratio. Animals fed Se-Met and/or Cr-Met supplements had lower blood malondialdehyde (MDA) in week 9 of the experiment (P < 0.05). Blood ferric-reducing antioxidant power (FRAP) tended to be higher in the Se-Met- and Se-Cr-Met-supplemented groups (P < 0.1).TS reduced feed intake in lambs fed the control diet in week 8 of the experiment (P = 0.003). The lambs given with supplemental Cr-Met exhibited lower glucose concentration before transportation (BT) (P = 0.029) and after transportation (AT) (P = 0.016) compared to the control. Lambs fed Se-Cr-Met had the lowest cortisol concentration BT (P < 0.05). It was concluded that feeding Se-Met and/or Cr-Met supplements could improve growth performance and be beneficial in attenuating the adverse effects of transportation stress in Baluchi ewe lambs.
研究了补充硒蛋氨酸（Se-Met）和铬蛋氨酸（Cr-Met）对24只俾路支母羊羔羊（18 - 20周龄）的生产性能及运输应激反应的影响，为期9周。羔羊被随机分为四种日粮处理组：（1）对照组；（2）每千克日粮干物质（DM）补充1.5毫克Se-Met；（3）每千克日粮DM补充0.8毫克Cr-Met；（4）每千克日粮DM补充1.5毫克Se-Met加0.8毫克Cr-Met（Se-Cr-Met）。在第8周开始时，进行30分钟的公路运输应激（TS）。饲喂Cr-Met和Se-Cr-Met日粮的羔羊采食量高于对照组和Se-Met组动物（P < 0.0001）。与对照组相比，饲喂Cr-Met日粮的羔羊平均日增重（ADG）更高（P = 0.007）。单独或联合补充Se-Met和Cr-Met显著（P < 0.05）降低了饲料转化率（FCR）。接受补充Se-Met（P = 0.014）、Cr-Met（P = 0.005）和Se-Cr-Met（P = 0.003）日粮的动物血糖浓度低于对照组。饲喂Cr-Met的羔羊血液T3浓度高于对照动物（P = 0.040），而补充Cr-Met（P = 0.039）和Se-Cr-Met（P = 0.032）提高了三碘甲状腺原氨酸（T3）与甲状腺素（T4）的比值。在实验第9周，饲喂Se-Met和/或Cr-Met补充剂的动物血液丙二醛（MDA）含量较低（P < 0.05）。补充Se-Met和Se-Cr-Met组的血液铁还原抗氧化能力（FRAP）有升高趋势（P < 0.1）。在实验第8周，TS降低了饲喂对照日粮羔羊的采食量（P = 0.003）。与对照组相比，补充Cr-Met的羔羊在运输前（BT）（P = 0.029）和运输后（AT）（P = 0.016）血糖浓度较低。饲喂Se-Cr-Met的羔羊运输前皮质醇浓度最低（P < 0.05）。研究得出结论，饲喂Se-Met和/或Cr-Met补充剂可以提高生长性能，并有助于减轻俾路支母羊羔羊运输应激的不利影响。
