精料补饲水平对早期断奶山羊生长性能和血清生化指标的影响  

Effects of Mixed Concentrate Supplementation Level on Growth Performance and Serum Biochemical Indices of Early-weaned Goat Kids

作　　者：杨彬彬[1] 王之盛[1] 郭春华[2] 黄艳玲[2] 王永[2] 李世丹[2] 龚华斌 陈文彬 

机构地区：[1]四川农业大学动物营养研究所,雅安625014 [2]西南民族大学生命科学与技术学院,成都610041 [3]四川省简阳大哥大牧业有限公司,简阳641421

出　　处：《动物营养学报》2010年第5期1301-1306,共6页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家科技支撑"抗寒保畜恢复山羊生产技术集成与示范"(2008BADC3B00)

摘　　要：本试验旨在研究精料补饲水平对早期断奶山羊生长性能和血清生化指标的影响。试验选用32只(35±3)日龄早期断奶简阳大耳羊山羊[(8.576±1.831)kgBW],公母各占1/2,根据体重采用随机区组试验设计,将山羊分为4个组,每组8只(公母各占1/2),单栏单饲。对照组跟随母羊哺乳,试验Ⅰ、Ⅱ和Ⅲ组在35日龄实施断奶,分别补饲50、150和250g/d精料。试验期42d。试验结果表明:1)补饲精料对断奶山羊的平均日增重有显著或极显著影响(P<0.05或P<0.01)。其中,250g/d组平均日增重最高,较对照组提高了83.80%(P<0.01);50g/d组平均日增重最低,显著或极显著低于其他各组(P<0.05或P<0.01)。试验组间粗料采食量差异不显著(P>0.05)。试验组山羊总料重比差异不显著(P>0.05);但按摄入精料计算,150、250g/d组料(精料)重比极显著高于50g/d组(P<0.01)。2)250、150g/d组山羊总干物质、消化能、粗蛋白质摄入量极显著高于50g/d组(P<0.01),各试验组的饲粮总的中性洗涤纤维和酸性洗涤纤维摄入量差异不显著(P>0.05)。3)各组山羊血清总蛋白、白蛋白、血浆尿素氮、血清IgA和IgM差异不显著(P>0.05)。由此说明,补饲精料有利于提高早期断奶大耳羊山羊的营养物质摄入量,促进生长。补饲精料量(250g/d)占食入饲料总量的(70.0±3.0)%时,可极显著提高山羊的生长性能。An experiment was conducted to investigate the effects of mixed concentrate supplementation level on growth performance and serum biochemical indexes of early-weaned goat kids.Thirty-two （35±3） days old goat kids （male/female 1：1） with body weight of （8.576±1.831） kg were assigned to 4 groups with 8 replicates each by body weight and each goat was fed in an individual pen.Goats in the control group were sucked by ewes,and goats in the experimental groups were weaned at 35-day-old and fed diets supplemented with 50,150,250 g/d mixed concentrate,respectively.The experiment lasted for 42 days.The results showed as follows：1） average daily gain （ADG） was influenced （P〈0.05 or P〈0.01） by the concentrate supplementation level.ADG in the 250 g/d group was the highest and was increased by 83.80% compared with the control group （P〈0.01）.ADG in the 50 g/d group was significantly lower than that in the other groups （P〈0.01 or P〈0.05）.There were no significant differences on the dry matter intake of grass among the experimental groups （P〉0.05）.No significant difference on feed efficiency （total feed intake/gain） was observed among the three concentrate supplementation level groups （P〉0.05）,but the concentrate to gain ratio in 150 and 250 g/d groups was significantly higher than that in 50 g/d group.2） Goat kids in 150 and 250 g/d groups consumed more dry matter,digestible energy,and crude protein than goats in 50 g/d group （P〈0.01）.However,there were no significant differences in NDF and ADF intake among trial groups （P〉0.05）.3） No significant differences were observed in serum biochemical indexes including serum total protein,albumin,plasma urea nitrogen and serum IgA and IgM.In conclusion,the mixed concentrate supplementation increases the nutrients intake of the goat kids and promotes their growth.Growth performance of goat kids can be significantly improved when the concentrate supplementation level reaches （70.0±3.0）% of the total feed in

关 键 词：山羊 早期断奶 精料 补饲水平 生长性能 

分 类 号：S826[农业科学—畜牧学] S816.4[农业科学—畜牧兽医]