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

ZHANG Yongcui; WANG Enling; YAN Junli; FU Guihua; WANG Yuwen; TAN Qingyuan; LIANG Qijun; YANG Lei; XIE Hongmei

doi:10.3969/j.issn.1006-267x.2021.02.043

2021 , Vol. 33 >Issue 2: 1036 - 1043

DOI: https://doi.org/10.3969/j.issn.1006-267x.2021.02.043

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

ZHANG Yongcui ,
WANG Enling ,
YAN Junli ,
FU Guihua ,
WANG Yuwen ,
TAN Qingyuan ,
LIANG Qijun ,
YANG Lei ,
XIE Hongmei

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1. Shandong Vocational Animal Science and Veterinary College, Weifang 261061, China;
2. Zhucheng Longdu Animal Husbandry and Veterinary Station, Zhucheng 262200, China;
3. Animal Husbandry and Veterinary Station of Miaoshan Town, Tancheng County, Linyi 276000, China

Received date: 2020-07-15

Online published: 2021-02-04

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Abstract

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) supplementation level is 20 mg/kg for 2 to 4 months old long hair rabbit.

Key words： copper methionine; long hair rabbit; performance; serum biochemical indexes; copper-containing enzyme activities

Cite this article

ZHANG Yongcui , WANG Enling , YAN Junli , FU Guihua , WANG Yuwen , TAN Qingyuan , LIANG Qijun , YANG Lei , XIE Hongmei . Effects of Copper Methionine on Performance, Serum Biochemical Indexes and Copper-Containing Enzyme Activities of 2 to 4 Months Old Long Hair Rabbits[J]. Chinese Journal of Animal Nutrition, 2021 , 33(2) : 1036 -1043 . DOI: 10.3969/j.issn.1006-267x.2021.02.043

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