高羊毛氨酸硒对湖羊生长性能、屠宰性能及肉品质的影响  

Effects of High Methionine Selenium on the Growth Performance,Slaughtering Performance,and Meat Quality of Hu Sheep

作　　者：陈佳佳 李陇平 杨兴林 屈雷 CHEN Jia-jia;LI Long-ping;YANG Xing-lin;QU Lei(Shaanxi Provincial Engineering Research Center for Cashmere Goats;School of Life Sciences,Yulin University,Yulin 719000,China)

机构地区：[1]陕西省陕北绒山羊工程技术研究中心,陕西榆林719000 [2]榆林学院生命科学学院,陕西榆林719000

出　　处：《榆林学院学报》2024年第5期53-59,共7页Journal of Yulin University

基　　金：榆林市科技局产学研项目(2023-CXY-174,CXY-2022-54);榆林学院研究生创新基金项目(2023YLYCX15)。

摘　　要：在湖羊饲粮中添加不同浓度的高羊毛氨酸硒(Selenohomolanthionine,SeHLan),研究其对湖羊生长性能、屠宰性能和肉品质的影响。选择4月龄、体重相近(31.34±1.00)kg的健康湖羊40只,随机分为4组,饲喂80 d,4组试验羊分别饲喂基础饲粮(含硒1.17 mg/kg DM,I组),以及在基础饲粮中分别添加0.30(Ⅱ组)、0.60(Ⅲ组)和1.20(Ⅳ组)mg/kg SeHLan;饲喂期间2 d测一次采食量,15 d秤一次体重,饲喂结束后采集血液,测定血常规;每组挑选3只羊进行屠宰,测定屠宰性能,采集肌肉、心脏、肝脏、脾脏、肾脏、十二指肠、盲肠和结肠样品,检测硒含量及肉品质。结果显示:与Ⅰ组相比,Ⅱ组血小板平均体积显著降低(P<0.05);Ⅲ组和Ⅳ组宰前活重和胴体重显著升高(P<0.05);Ⅲ组和Ⅳ组肾脏、肝脏、脾脏、心脏、结肠、盲肠和背肌硒含量极显著升高(P<0.01);十二指肠硒含量显著升高(P<0.05);Ⅱ、Ⅲ、Ⅳ组亮度L*值显著升高(P<0.01),剪切力极显著降低(P<0.01),Ⅲ组红度a*和黄度b*值显著升高(P<0.05)。研究结果表明,饲粮添加SeHLan能够显著提高生长期湖羊的屠宰性能和硒沉积,改善肉品质,以SeHLan形式硒的适宜添加量为1.20 mg/kg。The effects of adding different concentrations of high Selenohomolanthionine(SeHLan)to the diet of Hu sheep on their growth performance,slaughtering performance,and meat quality were studied.Forty healthy Hu sheep,aged 4 months and with similar body weights(31.34±1.00 kg),were selected and randomly divided into four groups.They were fed for 80 days,with the four groups of experimental sheep being fed a basal diet(containing 1.17 mg/kg DM selenium,Group Ⅰ),and the basal diet supplemented with 0.30 mg/kg SeHLan(Group Ⅱ),0.60 mg/kg SeHLan(Group Ⅲ),and 1.20 mg/kg SeHLan(Group Ⅳ),respectively.Feed intake was measured every two days during the feeding period,body weight measured every 15 days,and blood collected at the end of feeding to determine blood routine parameters.Three sheep from each group were selected for slaughter to determine slaughtering performance,and samples of muscle,heart,liver,spleen,kidney,duodenum,cecum,and colon were collected to detect selenium content and meat quality.The results showed that compared with Group Ⅰ,the mean platelet volume in Group Ⅱ was significantly reduced(P<0.05);the pre-slaughter live weight and carcass weight in Groups Ⅲ and Ⅳ were significantly increased(P<0.05);the selenium content in the kidneys,liver,spleen,heart,colon,cecum,and back muscle in Groups Ⅲ and Ⅳ was significantly increased(P<0.01);the selenium content in the duodenum was significantly increased(P<0.05);the L*value of brightness in Groups Ⅱ,Ⅲ,and Ⅳ was significantly increased(P<0.01),and the shear force was significantly reduced(P<0.01);the a*value of redness and b*value of yellowness in Group Ⅲ were significantly increased(P<0.05).The results indicate that adding SeHLan to the diet can significantly improve the slaughtering performance and selenium deposition of growing Hu sheep,and improve meat quality,with the appropriate addition level of selenium in the form of SeHLan being 1.20 mg/kg.

关 键 词：高羊毛氨酸硒 湖羊 生长性能 屠宰性能 硒沉积 肉品质 

分 类 号：S816.72[农业科学—饲料科学]