Relationship between liver copper status and breed of UK finished lambs, and consideration of correlation to topsoil copper content

IF 1.9 3区农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Livestock Science Pub Date : 2025-05-20 DOI:10.1016/j.livsci.2025.105727

AH Clarkson, NR Kendall

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Abstract

Recent publications for sheep have noted both an increase in the prevalence of elevated hepatic copper, and cases of ovine copper toxicity. The liver copper status of the UK dairy herd has been well documented but little is known about sheep. This paper aims to establish a similar benchmark for finished lambs across the UK and to determine if any relationship exists between liver copper status and breed or topsoil concentration.

Ovine livers (n = 255) were collected from 3 abattoirs. The data for feeding system, breed and supplementation strategy were obtained via questionnaire posted to participants by the abattoir. The collected livers were acid-digested and analysed for copper concentration using inductively coupled plasma mass spectrometry (ICP-MS). Topsoil data was obtained from the British Geological Society.

Most livers (60 %) were within ‘normal’ range (1405–5618 µmol/kg DM), with the majority of remaining livers (31 %) were classed as low-deficient (<1404 µmol/kg DM). Only 2.8 % reported as ‘high’ (>8000 µmol/kg DM). Despite not suspecting a mineral imbalance, most farms (61 %) already implemented a supplementation strategy. No correlation was found between liver status and topsoil concentration. The liver copper status of British finished lambs appears to be more comparable to the findings in beef cattle, therefore increasing supplementation without defined diagnosis or history of deficiency could lead to accumulation and toxicity in this susceptible species.

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英国育肥羊肝脏铜含量与品种的关系及与表土铜含量的相关性研究

最近关于羊的出版物都注意到肝铜升高的流行率增加，以及羊铜中毒的病例。英国奶牛群的肝脏铜含量已经有了很好的记录，但对绵羊的了解却很少。本文旨在为全英国的成品羔羊建立类似的基准，并确定肝铜状态与品种或表土浓度之间是否存在任何关系。从3个屠宰场采集羊肝脏（n = 255）。饲养系统、品种和补充策略的数据由屠宰场通过向参与者发放问卷的方式获得。收集的肝脏进行酸消化，并使用电感耦合等离子体质谱（ICP-MS）分析铜浓度。表层土壤数据来自英国地质学会。大多数肝脏（60%）在“正常”范围内（1405-5618µmol/kg DM），其余大多数肝脏（31%）被归类为低缺陷（1404µmol/kg DM）。只有2.8%报告为“高”（>8000µmol/kg DM）。尽管没有怀疑矿物质失衡，但大多数农场（61%）已经实施了补充策略。肝脏状况与表层土壤浓度无相关性。英国成品羔羊的肝铜状况似乎与肉牛的发现更相似，因此在没有明确诊断或缺乏历史的情况下增加补充可能导致这种易感物种的积累和毒性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Livestock Science 农林科学-奶制品与动物科学

CiteScore

4.30

自引率

5.60%

发文量

237

审稿时长

3 months

期刊介绍： Livestock Science promotes the sound development of the livestock sector by publishing original, peer-reviewed research and review articles covering all aspects of this broad field. The journal welcomes submissions on the avant-garde areas of animal genetics, breeding, growth, reproduction, nutrition, physiology, and behaviour in addition to genetic resources, welfare, ethics, health, management and production systems. The high-quality content of this journal reflects the truly international nature of this broad area of research.