In this experiment,the effect of Asparagus officinalis stem leaf silage ration on the productive performance,rumen fermentation parameters and blood indices in growing Hu sheep was explored.Thirty-six Hu sheep weighted (19.46 t 2.07) kg were divided into two groups.The specific ration of either the treated group or the control group,in each the energy and protein were basically the same,was designed based on the feeding standard of sheep (2004).The treated group was fed on the A.officinalis stem leaf silage ration and the control group was fed on the peanut vine ration.The feeding assay lasted 60 days,when the digestion and metabolism experiment were conducted,and the pre-experiment period was 7 days.The body weight of sheep was measured at both the beginning and end of the trial,and rumen fluid and blood were collected at the end of the experiment.The results showed that there was no significant difference in average daily growth,relative growth or feed intake/daily weight gain (P＞0.05) between the treated group and the control group,which raised the economic benefits by reducing the cost of average daily weight gain.The experiment ration group,significantly decreased the concentration of acetate and the acetate/propionate (P＜0.05),which had no significant effect on the content of MCP,NH3-N,propionate,butyrate (P＞0.05),and also significantly reduced the concentration ofALB (P＜0.05),but had no prominent effect on TP,GLOB,GLU,CHOL,TG,NEFA,TBIL,CREA,ALT,AST,SOD (P＞0.05).In summary,the A.officinalis stem leaf silage ration had little effect on the growth performance of growing Hu sheep and could improve the economic benefit,indicating that the cheap plant had a good application prospect.%本试验旨在研究芦笋茎叶青贮料日粮对生长湖羊生产性能、瘤胃发酵参数和血液生化指标的影响.选取36只体重为(19.46±2.07) kg的湖羊,根据体重相近原则,采用配对设计分为2组,对照组和试验组分别饲喂花生藤日粮和芦笋茎叶青贮料日粮,2组日粮的能量和粗蛋白等营养水平基本一致.试验期60 d,其中预试期7d,试验始末称重,并进行消化代谢试验、采集血液和瘤胃液.结果表明:与对照组相比,芦笋茎叶青贮料对湖羊的平均日增重、相对增长、耗料增重比无显著影响(P＞0.05),但因芦笋茎叶廉价,平均每千克增重的饲料成本降低了1.8元,提高了湖羊养殖效益;与对照组相比,试验组日粮显著降低了湖羊瘤胃内乙酸含量和乙酸/丙酸(P＜0.05),对微生物蛋白、氨态氮、丙酸和丁酸均无显著影响(P＞0.05);同时试验组显著降低了血浆白蛋白浓度(P＜0.05),对总蛋白、球蛋白、葡萄糖、总胆固醇、甘油三酯、游离脂肪酸、总胆红素、肌酐、谷丙转氨酶、谷草转氨酶和超氧化物歧化酶等血液生化指标无显著影响(P＞0.05).综上可知,芦笋茎叶青贮料日粮对湖羊生产性能无不良影响,因价格优势,增加了企业的经济效益,具有较好的应用前景.
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