| 铜对育成期乌苏里貉生长性能、营养物质消化率的影响 |
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| 引用本文： | 张新宇,张海华,刘晗璐,钟伟,司华哲,韩菲菲,蔡熙姮,李光玉.铜对育成期乌苏里貉生长性能、营养物质消化率的影响[J].中国畜牧兽医,2020,47(6):1750-1758. |
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| 作者姓名： | 张新宇 张海华 刘晗璐 钟伟 司华哲 韩菲菲 蔡熙姮 李光玉 |
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| 作者单位： | 1. 中国农业科学院特产研究所, 特种经济动物分子生物学国家重点实验室, 长春 130112;2. 河北科技师范学院动物科技学院, 河北省特色动物种质资源挖掘与创新重点实验室, 秦皇岛 066000 |
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| 基金项目： | 中国农业科学院创新工程项目（CAAS-ASTIP-2019-ISAPS）；河北省青年拔尖人才项目；河北省高校百名优秀创新人才项目；河北省自然科学基金面上项目（C2019407111） |
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| 摘 要： | 本试验旨在研究日粮中添加铜对育成期雄性乌苏里貉生长性能、营养物质消化率、氮、铜代谢及血清生化指标的影响。随机选取（60±5）日龄健康的雄性乌苏里貉105只，体重2.83 kg±0.37 kg，随机分为7组，每组15只貉，1只为1个重复。分别饲喂含蛋氨酸铜为0（对照组）、20（Ⅰ组）、30（Ⅱ组）、40（Ⅲ组）、50（Ⅳ组）、60（Ⅴ组）和200 mg/kg（Ⅵ组）的试验日粮，预试期7 d，正试期55 d。试验期间，每组随机选取8只乌苏里貉采用全收粪尿法进行消化代谢试验。结果表明：Ⅲ、Ⅳ组的末重显著高于对照组（P<0.05），其余各组与对照组相比体重差异不显著。Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组平均日增重（ADG）均显著高于对照组（P<0.05）。Ⅴ组的脂肪消化率显著高于对照组和Ⅰ组（P<0.05）。对照组和Ⅵ组的铜消化率显著高于Ⅰ、Ⅱ、Ⅲ、Ⅳ、Ⅴ组（P<0.05）。Ⅳ组的氮沉积显著高于对照组和Ⅰ组（P<0.05）。各组间铜摄入量存在显著差异（P<0.05），粪铜含量随着铜添加水平的升高而显著升高（P<0.05）。Ⅴ、Ⅵ组尿铜显著高于Ⅰ、Ⅱ、Ⅲ、Ⅳ和对照组（P<0.05）。各铜添加组与对照组铜沉积差异显著（P<0.05）。Ⅵ组血清低密度脂蛋白（LDL）含量显著高于对照组和Ⅰ组（P<0.05）。Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ组血清白蛋白（ALB）含量显著高于对照组（P<0.05）。Ⅳ组血清尿素含量显著低于对照组（P<0.05）。在本试验中，育成期乌苏里貉日粮中铜添加量在30~50 mg/kg时可获得较好的生长性能。考虑到铜排放量、饲养成本、环境污染等因素，推荐育成期乌苏里貉铜添加量为30 mg/kg。
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| 关 键 词： | 铜 乌苏里貉 生长性能 营养物质消化率 |
| 收稿时间： | 2019-10-16 |
Effects of Dietary Copper on Growth Performance,Nutrient Digestibility of Growing Raccoon Dog |
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| ZHANG Xinyu,ZHANG Haihua,LIU Hanlu,ZHONG Wei,SI Huazhe,HAN Feifei,CAI Xiheng,LI Guangyu.Effects of Dietary Copper on Growth Performance,Nutrient Digestibility of Growing Raccoon Dog[J].China Animal Husbandry & Veterinary Medicine,2020,47(6):1750-1758. |
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| Authors: | ZHANG Xinyu ZHANG Haihua LIU Hanlu ZHONG Wei SI Huazhe HAN Feifei CAI Xiheng LI Guangyu |
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| Institution: | 1. State Key Laboratory of Molecular Biology of Special Economic Animals, Institute of Special Wild Economic Animals and Plants, Chinese Academy of Agricultural Sciences, Changchun 130112, China;2. Hebei Key Laboratory of Specialty Animal Germplasm Resources Innovation and Utilization, Hebei Normal University of Science and Technology, Qinhuangdao 066000, China |
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| Abstract: | This experiment was investigated to study the effects of dietary copper on the growth performance,nutrient digestibility,nitrogen,copper metabolism and serum biochemical indexes of male raccoon dog.105 healthy male raccoon dogs with (60±5) days old whose body weight was (2.83±0.37) kg were randomly divided into 7 groups with 15 replicates per group and 1 raccoon dog per replicate.The raccoon dogs were fed 7 diets with different copper supplemental levels,0 (control group),20 (group Ⅰ),30 (group Ⅱ),40 (group Ⅲ),50 (group Ⅳ),60 (group Ⅴ) and 200 mg/kg (group Ⅵ).The pre-test period lasted for 7 d and the trial period lasted for 55 d.During the experiment,8 raccoon dogs in each group were randomly selected for digestion and metabolism test by total fecal and urine collection.The results showed as follows:The final weight in the group Ⅲ and Ⅳ were significantly higher than control group (P<0.05).There was no significant difference in body weight between the other groups and control group.The average daily gain (ADG) in the groupsⅠ,Ⅱ,Ⅲ,Ⅳ,Ⅴand Ⅵ were significantly higher than control group (P<0.05).The fat digestibility in the group Ⅴ was significantly higher than that in the group Ⅰ and control group (P<0.05).The copper digestibilities in control group and group Ⅵ were significantly higher than that in the groups Ⅰ,Ⅱ,Ⅲ,Ⅳ and Ⅴ (P<0.05).The nitrogen deposition in the group Ⅳ was significantly higher than that in the group Ⅰ and control group (P<0.05).There were significant difference in copper intakes between the two groups (P<0.05).The fecal copper contents increased with the increase of copper intake (P<0.05).The urinary copper in the groups Ⅴ and Ⅵ was significantly higher than that in the group Ⅰ,Ⅱ,Ⅲ,Ⅳ and control group (P<0.05).There was significant difference in copper deposition between each copper addition group and control group (P<0.05).The serum low density lipoprotein (LDL) in the group Ⅵ was significantly higher than that in the groups Ⅰ and control group (P<0.05).The serum albumin (ALB) in the groups Ⅱ,Ⅲ,Ⅳ,Ⅴ and Ⅵ were significantly higher than control group (P<0.05).The serum urea in the groups Ⅳ was significantly lower than control group (P<0.05).It was concluded that the dietary copper supplemental level arrives at 30 to 50 mg/kg,the growth performance was better.In order to reduce copper emissions,protect the environment and reduce the cost of feeding,it was recommended to add 30 mg/kg in practice. |
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| Keywords: | copper raccoon dog growth performance nutrient digestibility |
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