蛋氨酸铜对2~4月龄长毛兔生产性能、血清生化指标及血清含铜酶活性的影响  

Effects of Copper Methionine on Performance,Serum Biochemical Indexes and Copper-Containing Enzyme Activities of 2 to 4 Months Old Long Hair Rabbits

作　　者：张永翠 王恩玲 严俊丽 伏桂华 王宇文 谭清元 梁启军 杨磊 解红梅 ZHANG Yongcui;WANG Enling;YAN Junli;FU Guihua;WANG Yuwen;TAN Qingyuan;LIANG Qijun;YANG Lei;XIE Hongmei(Shandong Vocational Animal Science and Veterinary College,Weifang 261061,China;Zhucheng Longdu Animal Husbandry and Veterinary Station,Zhucheng 262200,China;Animal Husbandry and Veterinary Station of Miaoshan Town,Tancheng County,Linyi 276000,China)

机构地区：[1]山东畜牧兽医职业学院,潍坊261061 [2]诸城市龙都畜牧兽医站,诸城262200 [3]临沂市郯城县庙山镇畜牧兽医站,临沂276000

出　　处：《动物营养学报》2021年第2期1036-1043,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：山东省现代农业产业技术体系特种经济动物创新团队(SDAIT-21-03)。

摘　　要：本试验旨在研究饲粮中蛋氨酸铜添加量对2~4月龄长毛兔生产性能、血清生化指标及血清含铜酶活性的影响。选用180只刚剪完胎毛的2月龄蒙阴长毛兔,随机分为6组,每组10个重复,每个重复3只。以蛋氨酸铜为铜源,在基础饲粮中分别添加0、10、20、40、80和160 mg/kg铜,配制6种试验饲粮。预试期7 d,正试期53 d。结果表明:铜添加量对长毛兔平均日增重(ADG)、料重比(F/G)有显著影响(P<0.05),随着铜添加量的增加,ADG先增加后降低,F/G先降低后增加,当铜添加量为40 mg/kg时,ADG最高,F/G最低,但与铜添加量为20 mg/kg时差异不显著(P>0.05)。铜添加量对产毛量、毛直径、皮张面积均无显著影响(P>0.05)。铜添加量对血清总蛋白(TP)、白蛋白(ALB)、球蛋白(GLB)、尿素氮(UN)含量以及白球比(A/G)的影响均不显著(P>0.05)。随着铜添加量的增加,血清GLB含量呈先升高后降低的趋势。铜添加量对血清铜锌超氧化物歧化酶、铜蓝蛋白活性有显著影响(P<0.05),铜添加量为20 mg/kg时,血清铜锌超氧化物歧化酶、铜蓝蛋白的活性最高,分别为69.33 U/mL和227.30 U/L。铜添加量对血清钙、磷含量无显著影响(P>0.05),对肝脏指数、肾脏指数、心脏指数、脾脏指数亦无显著影响(P>0.05)。依据本试验结果并考虑环保要求,以蛋氨酸铜为铜源时,推荐2~4月龄长毛兔饲粮中铜添加量为20 mg/kg。This experiment was conducted to study the effects of dietary copper methionine supplemental level on the performance,serum biochemical indexes and copper-containing enzyme activities of 2 to 4 months old long hair rabbits.One hundred and eighty Mengyin long hair rabbits were randomly assigned to 6 groups with 10 replicates per group and 3 rabbits per replicate.Rabbits in the 6 groups were fed a basal diet supplemented with 0,10,20,40,80 and 160 mg/kg copper(the form was copper methionine),respectively.The trail lasted for 7 days for adaption and 53 days for test.The results showed as follows:copper supplemental level had significant effects on average daily gain(ADG)and feed/gain(F/G)(P<0.05).With the copper supplemental level increasing,the ADG was firstly increased and then decreased,and the F/G was firstly decreased and then increased.The ADG was the highest and the F/G was the lowest when copper supplemental level was 40 mg/kg,but it has no significant difference with the 20 mg/kg of copper supplemental level.Copper supplemental level had no significant effects on hair production,wool diameter and fur area(P>0.05),and had no significant effects on serum total protein(TP),albumin(ALB),globulin(GLB),urea nitrogen(UN)contents and albumin/globulin(A/G)(P>0.05).The serum GLB content was firstly increased and then decreased with the copper supplemental level increasing.Copper supplemental level had significant influences on the activities of serum copper-zinc superoxide dismutase(Cu-Zn SOD)and ceruloplasmin(CP)(P<0.05),the activities of Cu-Zn SOD and CP were all the highest when copper supplemental level was 20 mg/kg,and they were 69.33 U/mL and 227.30 U/L,respectively.Copper supplemental level had no significant influences on serum calcium(Ca)and phosphorus(P)contents(P>0.05),and had no significant influences on liver index,kidney index,heart index and spleen index(P>0.05).According to the results and the requirement of environmental protection,the appropriate copper(copper methionine as copper source)supplementa

关 键 词：蛋氨酸铜 长毛兔 生产性能 血清生化指标 含铜酶活性 

分 类 号：S816[农业科学—饲料科学]