PHOTO: COMPANY WEBCAST
PHOTO: COMPANY WEBCAST
NEWS ▶▶▶ Webinar on antibiotic reduction…
Available for review: a recently held webinar on reducing antimicrobials in pigs by using integrated solutions. The webinar was broad- cast live on 5 October by Pig Progress’ sister ti- tle All About Feed, in cooperation with Trouw Nutrition. Three expert speakers each addressed a dif- ferent aspect of the issue. Leo den Hartog, R&D director at Nutreco and part-time profes- sor at Wageningen University (right on the picture), talked about the three pillars of an integrated approach to reduce antibiotic use on pig farms. He touched on feed manage- ment, farm management and health management. That message was reinforced by the second speaker Nienke de Groot (left on the pic- ture), global program manager gut health at Trouw Nutrition Innovation. She focused on the aspect of gut health and concluded that prevention is an essential component to achieve a healthy gut – that is, prevention
How effective are barn air filters?
from pathogen intake as well as prevention of transmission. She concluded, “A multi-stake- holder approach is necessary.” The webinar’s last speaker, Dr Peter Ra mae- kers (second from the left), application and solution specialist swine at Trouw Nutrition, introduced the NutriOpt Kinetio concept. Feeding piglets according to that concept will result in a lower risk of diarrhoea, he said. It will also lead to improved piglet performance. The insight here is that optimal protein degra- dation is essential for piglet gut health – and that process begins in the stomach.
…and on feed safety and security
Biosecurity in the feed supply chain was the key theme during the first of three webinars organised by Pig Progress’ sister title All About Feed and GMP+ International, on 7 October. Professor Wim van der Poel, senior scien- tist at Wageningen Bioveterinary Research in the Netherlands (left in the picture), intro- duced a validated 3D collagen model to assess virus safety of casings – and explained how under controlled conditions maximum virus ti- tres can be obtained to measure virus reduc- tion. He said, “There is no need for animal ex- periments, and you can generate risk assessment data for all kinds of different virus- es and all kinds of casing products.” African Swine Fever virus was the topic for the second speaker, Kobe Lannoo (second from the left), global category manager pigs at Agrimprove, the functional feed ingredients brand of Agrifirm. He touched on the situation in Germany, where ASF has been confirmed in the wild boar population since September 2020. He also introduced the natural feed mitigator “FeedLock”, which consists of fatty acids that
can destroy the envelope of viruses such as ASFv, PRRSv or PEDv. A vast majority of the webinar’s viewers an- swered “yes” to the poll question from Johan den Hartog (right), managing director of GMP+. He asked the audience if biosecurity should be integrated in the scope of the GMP+ Feed Certification Scheme. In his presentation, he considered the role and responsibility of companies in the feed value chain in relation to biosecurity. The webinar series with GMP+ is a warm-up for the second Global Feed Safety Summit in Berlin, Germany in April 2022. The next webi- nar is planned for 3 February 2021.
As airborne diseases affect pig farms world- wide, many farmers have invested in swine barn air filters. How can their effectiveness be measured? A team of researchers at the Uni- versity of Minnesota, United States, has been working hard to answer that question. Led by Professor Montserrat Torremorell, the team made a considerable effort to establish the best method for detecting and extracting captured virus particles from swine barn fil- ters. After all, understanding what goes on in the barn is key to improving disease control efforts. The study was published in the peer-re- viewed Journal of Aerosol Science. The study found that grinding used filters with liquid ni- trogen and using the chemical solvent TRIzol to extract viral genetic material worked best, and this furthermore allowed them to con- firm the presence of circulating strains of vi- rus trapped in filters at barns where herds re- mained uninfected. That led to new insights, as the confirmed presence of particles of Porcine Reproductive and Respiratory Syndrome virus (PRRSv) and influenza A (IAv) reflects likely evidence of vi- rus spread in air particles between herds. In the abstract of the scientific publication, the authors wrote that PRRSv was detected in 27% and IAv in 66% of filters that had been in- stalled between December 2013 and Decem- ber 2017. They wrote: “Interestingly, PRRSv was also detected on used filters from farms with PRRSv negative status at the time of filter removal. Presence of PRRSv and IAv in the used filters show likely evidence of between herd aerosol spread for these viruses.”
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▶PIG PROGRESS | Volume 36, No. 9, 2020 33
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