摘要
为研究不同水平蛋氨酸硒对徐淮山羊生长性能、营养物质表观消化率及血液生化指标的影响,试验选取3月龄徐淮山羊60只,随机分为6组,每组2个重复,每个重复5只,对照组饲喂基础饲粮,试验组饲粮中分别添加0.1、0.2、0.3、0.4、0.5 mg/kg(以硒计算)的蛋氨酸硒,预饲期15 d,试验期60 d。结果表明:(1)当硒添加量为0.3 mg/kg时,平均日增重(ADG)最高,显著高于对照组和0.1、0.4、0.5 mg/kg组(P<0.05),料重比(F/G)最低。(2)各试验组粗蛋白质(CP)、粗脂肪(EE)、酸性洗涤纤维(ADF)表观消化率均高于对照组(P<0.05);当硒添加量为0.3 mg/kg时,CP表观消化率显著高于0.1、0.2 mg/kg组(P<0.05),EE表观消化率显著高于0.1、0.2、0.5 mg/kg组(P<0.05),ADF表观消化率最高,显著高于0.1、0.5 mg/kg组(P<0.05)。(3)当硒添加量为0.3 mg/kg时总蛋白(TP)、谷丙转氨酶(ALT)、谷草转氨酶(AST)含量显著高于对照组和0.1、0.2 mg/kg组(P<0.05),尿素氮(UN)含量显著低于对照组、0.1 mg/kg组、0.2 mg/kg组(P<0.05);硒添加量为0.3、0.4 mg/kg时,甘油三酯(TG)、葡萄糖(GLU)含量显著高于对照组、0.1 mg/kg组(P<0.05);各试验组白蛋白(ALB)、球蛋白(GLB)、总胆固醇(TC)含量无显著差异(P>0.05),随着硒含量的增加,呈现先升高后降低的趋势。由此可见,在徐淮山羊饲粮中添加0.3 mg/kg蛋氨酸硒,不仅提高了肉羊的生长性能和对营养物质的表观消化率,还影响了其血液生化指标。
The aim of this experiment was to study the effects of different levels of methionine-selenium on growth performance,apparent digestibility of nutrients,antioxidant capacity and blood biochemical indexes in Xuhuai goats.Sixty 3-month-old Xuhuai goats were selected and randomly divided into 6 groups with 2 replicates each and 5 goats in each replicate.The control group was fed the basal diet and the experimental group was fed 0.1,0.2,0.3,0.4 mg/kg and 0.5 mg/kg(in selenium)of methionine-selenium in the diet.The pre-feeding period was 15 days and the test period was 60 days.The results showed that:(1)When selenium was added to the diet at 0.3 mg/kg,the average daily gain(ADG)was the highest and significantly higher than the control group and 0.1,0.4 mg/kg and 0.5 mg/kg groups(P<0.05),and the feed/gain(F/G)was the lowest.(2)The apparent digestibility of crude protein(CP),ether extract(EE)and acid detergent fiber(ADF)in each test group was higher than that of the control group(P<0.05).The apparent digestibility of CP in0.3 mg/kg group was significantly higher than that of the test groups with 0.1 mg/kg and 0.2 mg/kg of methionine-selenium(P<0.05),while the apparent digestibility of EE was significantly higher than that of the test groups with 0.1,0.2 mg/kg and 0.5 mg/kg(P<0.05).The apparent digestibility of ADF was highest when selenium was added to the diet at 0.3 mg/kg,which was significantly higher than the 0.1 mg/kg and0.5 mg/kg test groups(P<0.05).(3)When selenium was added at 0.3 mg/kg in the diet,the contents of total protein(TP),alanine aminotransferase(ALT)and asparate aminontransferase(AST)were significantly higher than those in the control group,0.1 mg/kg and 0.2 mg/kg group(P<0.05),but urea nitrogen(UN)contents were significantly lower than those in the control group,0.1 mg/kg and 0.2 mg/kg groups(P<0.05).When selenium was added at 0.3 mg/kg and 0.4 mg/kg in the diet,the triglyceride(TG)and glucose(GLU)contents were significantly higher than those in the control group and 0.1 mg/kg group(P<0.05).There was no significant effect on the albumin(ALB),globulin(GLB)and total cholesterol(TC)contents in the goats of each test group(P>0.05).However,all of them showed a trend of increasing and then decreasing with the increase of selenium content.It could be seen that the addition of 0.3 mg/kg selenomethionine to the rations of Xuhuai goats not only improved the growth performance,antioxidant capacity and apparent digestibility of nutrients,but also affected the blood biochemical indexes of Xuhuai goats.
作者
康永刚
廖云琼
朱广琴
吕颜枝
KANG Yonggang;LIAO Yunqiong;ZHU Guangqin;LV Yanzhi(Xuzhou Vocational College of Bioengineering,Xuzhou,Jiangsu Province 221006,China)
出处
《中国饲料》
北大核心
2022年第5期66-71,共6页
China Feed
基金
江苏省高职院校教师专业带头人高端研修项目(2020GRFX097)
徐州市科技计划项目(KC19117)。
关键词
蛋氨酸硒
徐淮山羊
生长性能
营养物质表观消化率
血液生化指标
methionine-selenium
Xuhuai goats
growth performance
nutrient apparent digestibility
blood biochemical indexes