饲粮不同代谢能和蛋白质水平对育成期云上黑山羊生长性能、能氮代谢和血清生化指标的影响  

Effects of Diets with Different Levels of Metabolic Energy and Protein on Growth Performance,Energy and Nitrogen Metabolism,Serum Biochemical Indicators of Yunshang Black Goats during Growing Period

作　　者：付斌龙 旦增白吉 赵小琪 薛白[2] 兰蓉 曹堂兵 江炎庭 邵庆勇 欧阳依娜 FU Binlong;DANZENG Baiji;ZHAO Xiaoqi;XUE Bai;LAN Rong;CAO Tangbing;JIANG Yanting;SHAO Qingyong;OUYANG Yina(Yunnan Animal Sciences and Veterinary Institute,Kunming 650224,China;Animal Nutrition Institute,Sichuan Agricultural University,Chengdu 611130,China;Zhenkang County Animal Health Supervision Institute,Lincang 677704,China)

机构地区：[1]云南省畜牧兽医科学院,昆明650224 [2]四川农业大学动物营养研究所,成都611130 [3]镇康县动物卫生监督所,临沧677704

出　　处：《动物营养学报》2024年第8期5229-5241,共13页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：云南省重大科技专项计划(202102AE090039);云南省基础研究计划重点项目(202001AS070002);云南省技术创新人才培养对象项目(202405AD350042);云南省兴滇英才支持计划(YNWR-CYJS-2020-028)。

摘　　要：本试验旨在研究饲粮不同代谢能和蛋白质水平对育成期云上黑山羊生长性能、能氮代谢和血清生化指标的影响。选取80只体况良好、体重相近的6月龄云上黑山羊公羊,随机分为4组,每组20只羊。设定饲粮代谢能水平分别为9.8(高)、8.2 MJ/kg(低),蛋白质水平分别为13%(高)、10%(低),配制4种试验饲粮。4组试验羊分别饲喂高代谢能高蛋白质饲粮(HEHP组)、高代谢能低蛋白质饲粮(HELP组)、低代谢能高蛋白质饲粮(LEHP组)和低代谢能低蛋白质饲粮(LELP组)。所有试验羊经14 d的预试期后进入50 d的正试期,在正试期第23天从各组中选取5只羊进行为期5 d的消化代谢试验。结果显示:1)HELP组的平均日增重、干物质采食量显著高于LEHP组和LELP组(P<0.05);HELP组的料重比最低,且显著低于LELP组(P<0.05)。2)HELP组的沉积氮和净蛋白质利用率显著高于LELP组(P<0.05)。3)HELP组的总能消化率、总能代谢率、消化能代谢率均显著高于LEHP组和LELP组(P<0.05)。4)HELP组血清葡萄糖、总蛋白、白蛋白含量最高,且显著高于LELP组(P<0.05);HELP组血清尿素氮含量显著低于HEHP组和LEHP组(P<0.05)。5)HELP组增重效益最高,为4.759元/(d·只),LELP组增重效益最低,为2.380元/(d·只)。综上所述,饲喂代谢能水平为9.8 MJ/kg、蛋白质水平为10%的饲粮时有利于维持育成期云上黑山羊机体正常生理功能,并能促进其对营养物质的消化吸收,提高平均日增重和增重效益。This study aimed to investigate the effects of different dietary metabolic energy and protein levels on the growth performance,energy and nitrogen metabolism and serum biochemical indicators of Yunshang black goats during growing period.Selected eighty healthy 6-month-old Yunshang black goats with similar body weight were randomly divided into 4 groups,with 20 goats in each group.Dietary metabolic energy level and protein level were set at 9.8(high),8.2 MJ/kg(low)and 13%(high),10%(low),respectively,and then four experimental diets were prepared.Goats in the 4 groups fed high metabolic energy and high protein diet(HEHP group),high metabolic energy and low protein diet(HELP group),low metabolic energy and high protein diet(LEHP group),low metabolic energy and low protein diet(LELP group),respectively.The pretrial period was 14 days,and the experimental period was 50 days.On the 23rd day of the experimental period,5 goats were randomly selected from each group for digestion and metabolism experiment of 5 days.The results showed as follows:1)the daily weight gain(ADG)and dry matter intake(DMI)of the HELP group were significantly higher than those of the LEHP and LELP groups(P<0.05).The feed to gain ratio(F/G)of the HELP group was the lowest,which was significantly lower than that of the LELP group(P<0.05).2)The deposited nitrogen and net protein utilization rate of the HELP group were significantly higher than those of the LELP group(P<0.05).3)The gross energy digestibility,gross energy metabolic rate and digestible energy metabolic rate of the HELP group were significantly higher than those of the LEHP and LELP groups(P<0.05).4)The contents of glucose,total protein and albumin in serum of the HELP group were the highest,which were significantly higher than those of the LELP group(P<0.05).The serum urea nitrogen content of the HELP group was significantly lower than that of the HEHP and LEHP groups(P<0.05).5)The weight gain benefit of the HELP group was the highest,which per goat was 4.759 CNY/d,while that of the LEL

关 键 词：代谢能 蛋白质 云上黑山羊 生长性能 能氮代谢 血清生化指标 

分 类 号：S826[农业科学—畜牧学]