Canada_IPAP: Impact of alternative nutrition management on AMR burden, transmission and trends in dairy cattle.

Canada_IPAP:替代营养管理对奶牛 AMR 负担、传播和趋势的影响。

基本信息

  • 批准号:
    BB/X012794/1
  • 负责人:
  • 金额:
    $ 19.23万
  • 依托单位:
  • 依托单位国家:
    英国
  • 项目类别:
    Research Grant
  • 财政年份:
    2023
  • 资助国家:
    英国
  • 起止时间:
    2023 至 无数据
  • 项目状态:
    未结题

项目摘要

Antimicrobial resistance (AMR) is the ability of microorganisms to resist antimicrobial treatments. It is an urgent global public health threat with a direct impact on human and animal health. AMR carries a heavy economic burden due to higher costs of treatments and reduced productivity caused by sickness. Misuse and overuse of antimicrobials are the main drivers in the development of drug-resistant pathogens, including in livestock production. In dairy cattle, antibiotics important in treating pathogens in humans such as penicillin, cephalosporin and tetracycline are also used extensively to treat mastitis.Furthermore, AMR associated bacteria in livestock can be shed and disseminated to humans via direct contact, or through contact with the environment such as soil, water and faecal material, or through cross-contamination during food processing through a process known as horizontal gene transfer. Recent research has shown that diet has important effects on the presence and types of antimicrobial resistance genes (ARGs) present in dairy cows. The shedding and dissemination of ARGs by dairy cows has also been attributed to stress response of gastrointestinal tract microorganisms in relation to diet, and infection by harmful bacteria. This is an important finding as feeding management and dietary change are crucial for metabolic adaptation especially in the transition dairy cows. The transition period in dairy cows is the time between 3 weeks before calving to 3 weeks after calving. This period is critical for the health, fertility, and productivity of dairy cows as cows go through drastic metabolic and changes which render them extremely vulnerable to diseases. Therefore, their diet and energy intake during this period is important to boost their immunity and prevent high incidences of infectious diseases which may lead to increased antibiotic use and thus increased resistance.It is clear that nutritional changes provide the largest opportunities for improving health, reducing antibiotic usage and reducing AMR in dairy cattle. And so, to ameliorate the problem of AMR whilst bosting animal health, the use of non-antibiotic feed supplementation is gaining traction in the dairy industry. However, the impact of these feed supplements on AMR burden and spread of is largely unknown. This emphasises the importance of fundamental research into how feed supplementation contributes to not only animal health and immunity but to AMR burden and transmission, specifically in the dairy industry, currently worth £4.4bn in market prices.Therefore, in this study, we will investigate potential of using milk permeate as a feed supplement in transition dairy cows to improve animal health while assessing the effect this will have on the AMR burden of dairy.Milk permeate, is a major by-product of milk processing for cheese and yogurt production Its dried is sometimes used to replace starches in dairy cow diets. However, the use of this product has been limited due to the cost associated with drying and transport and as such, there is always an oversupply of milk permeate. For example, >1M and 30M litres of milk was dumped in the UK and Canada respectively in 2020.We aim to assess the potential of using surplus milk permeate (in its liquid form), which would otherwise be dumped, as feed supplements to improve immunity and health for transition dairy cow. This allows us address of creating a circular economy. We will also address the gaps in knowledge regarding dietary change and feeding management using milk permeate and the corresponding effect on the presence and transmission of ARGs during the transition period of dairy cows.
抗菌素耐药性(AMR)是微生物抵抗抗菌药物治疗的能力。它是一个紧迫的全球公共卫生威胁,直接影响到人和动物的健康。由于更高的治疗成本和疾病导致的生产力下降,AMR带来了沉重的经济负担。滥用和过度使用抗菌剂是包括畜牧业在内的抗药性病原体发展的主要驱动因素。在奶牛中,治疗人类病原体的重要抗生素,如青霉素、头孢菌素和四环素,也被广泛用于治疗乳房炎。此外,牲畜中的AMR相关细菌可以通过直接接触,或通过接触土壤、水和粪便等环境,或通过食品加工过程中的交叉污染,通过一种称为水平基因转移的过程,传播给人类。最近的研究表明,日粮对奶牛体内存在的抗菌素耐药基因(ARGs)的存在和类型有重要影响。奶牛ARGs的脱落和传播也归因于与饮食有关的胃肠道微生物的应激反应,以及有害细菌的感染。这是一个重要的发现,因为饲养管理和饮食变化对代谢适应至关重要,特别是在过渡奶牛中。奶牛的过渡期是指产奶前3周到产后3周之间的时间。这一时期对奶牛的健康、繁殖力和生产力至关重要,因为奶牛经历了剧烈的新陈代谢和变化,使它们极易受到疾病的影响。因此,在此期间,他们的饮食和能量摄入对于提高他们的免疫力和防止传染病的高发病率非常重要,因为传染病可能会导致抗生素的使用增加,从而增加抵抗力。显然,营养变化为改善奶牛的健康、减少抗生素的使用和减少AMR提供了最大的机会。因此,为了在改善AMR问题的同时促进动物健康,非抗生素饲料补充剂的使用正在乳制品行业获得吸引力。然而,这些饲料补充剂对AMR负担和传播的影响在很大程度上是未知的。这强调了基础研究的重要性,即饲料补充如何不仅有助于动物的健康和免疫力,而且有助于AMR负担和传播,特别是在乳制品行业,目前市场价格为44亿GB。因此,在这项研究中,我们将调查在过渡奶牛中使用牛奶渗透作为饲料添加剂来改善动物健康的潜力,同时评估这将对奶牛的AMR负担产生的影响。牛奶渗透是牛奶加工的主要副产品,用于奶酪和酸奶生产,其干燥的有时被用来替代奶牛日粮中的淀粉。然而,由于与干燥和运输相关的成本,该产品的使用一直受到限制,因此,牛奶渗透液总是供过于求。例如,2020年英国和加拿大分别倾倒了100万升和3000万升牛奶。我们的目标是评估将多余的牛奶渗透液(以液体形式)用作饲料补充剂的潜力,以提高过渡奶牛的免疫力和健康。这使得我们可以解决创建循环经济的问题。我们还将解决在奶牛过渡期间改变饮食和使用牛奶渗透液进行饲养管理以及对ARGs存在和传播的相应影响方面的知识差距。

项目成果

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Linda Boniface Oyama其他文献

Linda Boniface Oyama的其他文献

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{{ truncateString('Linda Boniface Oyama', 18)}}的其他基金

Intended and unintended consequences of the ZnO ban from pig diets on antimicrobial resistance, post-weaning diarrhoea and the microbiome.
猪日粮中禁用氧化锌对抗菌素耐药性、断奶后腹泻和微生物组的有意和无意的影响。
  • 批准号:
    BB/Y004108/1
  • 财政年份:
    2024
  • 资助金额:
    $ 19.23万
  • 项目类别:
    Research Grant

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