饲粮中铜添加量对断奶至2月龄长毛兔生产性能和血清指标的影响

发布时间：2018-03-26 08:23

本文选题：铜　切入点：长毛兔　出处：《动物营养学报》2017年12期

【摘要】：本研究旨在探讨饲粮中铜添加量对断奶至2月龄长毛兔生产性能、血清生化指标及血清中酶活性的影响。选用蒙阴细毛型长毛兔180只,随机分为6组,每组30只,试验兔单笼饲养。6组试验兔分别饲喂在基础饲粮中添加0、10、20、40、80和160 mg/kg铜(添加形式为五水硫酸铜)的试验饲粮,试验饲粮中铜含量的实测值分别为3.25、13.13、23.40、43.56、83.58及163.87 mg/kg。预试期为7 d,正试期为23 d。结果表明:饲粮中铜添加量对长毛兔平均日增重(ADG)、料重比(F/G)的影响极显著(P0.01),当铜添加量为80 mg/kg时,ADG最高,F/G最低。饲粮中铜添加量对长毛兔胎毛产量、毛直径及皮张面积的影响不显著(P0.05)。饲粮中铜添加量对长毛兔血清中总蛋白(TP)、白蛋白(ALB)、球蛋白(GLB)、尿素氮(UN)含量及白球比(A/G)均有显著影响(P0.05)。血清中UN含量随饲粮中铜添加量的升高呈现先下降后升高的趋势,当铜的添加量为80 mg/kg时,血清中UN的含量最低。饲粮中铜添加量对长毛兔血清中铜锌超氧化物歧化酶(Cu-Zn SOD)活性的影响不显著(P0.05),但对血清中铜蓝蛋白(CP)活性的影响显著(P0.05)。随着饲粮中铜添加量的升高,血清中铜蓝蛋白活性先升高后降低,在铜添加量为80 mg/kg时有最高值。饲粮中铜添加量对长毛兔肝脏指数有显著影响(P0.05),而对其他内脏器官指数无显著影响(P0.05)。当铜添加量为20 mg/kg时,肝脏指数最高。综合本试验测定指标,推荐断奶至2月龄长毛兔饲粮适宜的铜添加量为20~80 mg/kg。
[Abstract]:The purpose of this study was to investigate the effects of dietary copper supplementation on the production performance, serum biochemical indexes and serum enzyme activity of weaned to 2 month old rabbits. 180 Mengyin fine wool rabbits were randomly divided into 6 groups with 30 rabbits in each group. The experimental rabbits were fed with 6 groups of experimental rabbits fed with the basic diet supplemented with copper (0 10, 10, 20, 20, 40, 80 and 160 mg/kg), respectively, in the form of copper sulfate pentahydrate, the experimental rabbits were fed with 6 groups of experimental rabbits in a single cage. The measured values of copper content in the diet were 3.25 ~ 13.1323.40 ~ 43.56 ~ 83.58 and 163.87 mg 路kg ~ (-1), respectively. The results showed that the effect of copper supplementation on the average daily gain (ADGG) and feed weight ratio (F / G) of the rabbits was very significant (P 0.01), when the pre-test period was 7 days and the positive test period was 23 days. At 80 mg/kg, ADG was the highest and F- / G was the lowest. The effects of hair diameter and skin area were not significant (P 0.05). Dietary copper supplementation had a significant effect on the contents of total protein TPN, albumin, ALB, GLBN, urea nitrogen, and white ball ratio (A / G) in serum of wool rabbits. The content of serum UN was correlated with the dietary copper content. The increase of adding amount showed a tendency of decreasing first and then rising. When the amount of copper added is 80 mg/kg, The content of UN in serum was the lowest. The effect of dietary copper supplementation on the activity of Cu-Zn SOD in serum was not significant (P 0.05), but the effect on the activity of ceruloplasmin (CPD) in serum was significant (P 0.05). The activity of ceruloplasmin in serum increased first and then decreased, and reached the highest value at 80 mg/kg. Dietary copper supplementation had a significant effect on liver index (P0.05), but had no significant effect on other visceral organs index (P0.05). When copper was added for 20 mg/kg, the liver index of rabbits was significantly affected. The liver index was the highest. According to the indexes of this experiment, it was recommended that the suitable copper addition to the diet of weaning to 2 months old long hair rabbits was 2080 mg / kg of copper.
【作者单位】：山东畜牧兽医职业学院;山东农业大学动物科技学院;烟台开发区农业与海洋渔业局;
【基金】：基金项目:山东省现代农业产业技术体系毛皮动物产业创新团队(SDAIT-18-011-03)
【分类号】：S829.1

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