客服热线：
手机版
二维码
欧盟委员会的投票结果并不令人惊讶，因为委员会兽医用药品委员会(CVMP)在早期就已经是建议禁止使用高浓度的氧化锌。
▌氧化锌的作用方式
锌元素是断奶仔猪的必须营养元素之一，但是这仅仅限于低浓度的情况下(约150ppm)。而高浓度氧化锌(约2500ppm)是目前预防和控制断奶仔猪腹泻最为有效的方法。目前使用高浓度氧化锌的策略已经广泛应用于不同国家，包括英国、西班牙、丹麦等。欧盟委员会应当初荷兰和法国的申请，扩大的氧化锌的使用范围。
▌氧化锌对环境的影响
氧化锌的应用被认为是减少抗生素使用的关键替代方案。然而欧盟委员会指出，氧化锌对环境造成的影响极为严重，动物直接吸收的锌元素极少，因而粪便中含有大量的重金属锌，在粪污处理还田的情况下会直接污染土壤。然而从英国方面的研究来看，这种环境的影响是非常有争议的。
在另外一些研究中，使用氧化锌与耐甲氧西林金黄色葡萄球菌(MRSA)的发生有关，因为耐药细菌可能携带抗锌基因。同样的，这些研究结果仍然存在一些争议。
对英国脱欧的影响Effectof the UK in the light of Brexit(英语老师敲黑板了!Brexit是对英国退出欧盟的一种戏谑说法，即Britishexit or Britain exiting from the EU，翻译为中文即为“英国退出欧盟”。)
上周，欧盟委员会在布鲁塞尔召开的兽药产品常务委员会(CVMP)做出了决定，在5年内撤销所有含有氧化锌的兽药产品的营销许可。对于英国来说，目前还看不到什么时候才能真正地从欧盟退出。(英文作者最后还不忘调侃一下英国的脱欧艰辛之旅)
小编最后想说的
▌高浓度氧化锌——想说爱你不容易
关于高浓度氧化锌的问题目前而言国内外已经有非常多的研究和争论了。欧盟已经开始走禁止高浓度氧化锌的路了，那我们国内什么时候开始呢?这个很难猜测，但采用更为健康、环保的养殖方式是我们每个畜牧人都应该努力去实现的一个目标!
这篇文章里并没有细致的介绍欧盟规定和要求是多少浓度算高，多少浓度算正常，有哪些替代方案?我们期待后续的研究报道，小编也会及时跟踪翻译传送给大家。目前市面上氧化锌的产品很多，除了最基本的氧化锌产品，还有包膜氧化锌、纳米氧化锌等等，这两者可以大大降低锌的使用量，接下来肯定是一个比较好的研究方向
EU to end high-level zinc oxide use for piglets in 5 years
If they were using zinc oxide to control post-weaning diarrhoea, pig producers in the European Union will soon have to start looking for alternatives. The European Commission has voted to phase out zinc oxide as a veterinary instrument in the entire union within 5 years.
The outcome of the commission does not come as a surprise, as the advice of theCommittee for Medicinal Products for Veterinary Use (CVMP) to the commission had already been to ban the high-level use of zinc oxide.
Read also: David Burch’s latest Expert Opinion on zinc oxide
Zinc oxide’s mode of action
Zinc can be applied at low dosages (around 150 ppm) to weaners as a nutritional component. Usage in high levels as zinc oxide (around 2,500 ppm) has been shown to be an effective strategy to prevent and control e.g. post-weaning diarrhoeaproblems.
The strategy is therefore widely used in various countries, the UK, Spain and Denmark being a few of them. The European Commission zoomed in on the effects of usage of zinc oxide at the request of the Netherlands and France.
Read also: What alternatives are available for zinc oxide? John Gadd’s latest Expert Opinion
Effects of zinc oxide on the environment
The application of zinc oxide is considered a key alternative to the reduction of antibiotics usage. The European Commission, however, pointed to zinc oxide having a serious impact on the environment as much of the substance gets excreted and ends up in fields when the manure is applied on the lands. From the side of the UK, this environmental impact is heavily contested.
Zinc oxide will have to be phased out in pig production in 5 years. Photo: iStockIn some studies, the use of zinc oxide has been associated with the occurrence of methicillin-resistant Staphylococcus aureus (MRSA) as the resistant bacteria might carry zinc-resistance genes. In addition, certain antimicrobial effects are suspected, e.g. by the Netherlands Veterinary Medicines Institute (SDa). Again, these outcomes are also under debate.
Effect for the UK in the light of Brexit
Last week, the decision was made by the Standing Committee on Veterinary Medicinal Products (CVMP) of the European Commission in Brussels, to withdraw the marketing authorisation for all veterinary products containing zinc oxide within 5 years.
Find out all there is to know about pig health using Pig Progress’ unique Pig Health Tool
For the United Kingdom, it is unclear what the outcome will be in practice, seeing that the country is in the process to secede from the European Union (Brexit). The 5-year period might be longer than it takes the country to step out of the union.
（文章来源：畜牧人，改变饲界）
