Global pork markets are being affected by sluggish economic growth, weak consumption and recurrent disease outbreaks, and according to Rabobank’s latest Quarterly Pork Report, global trade is expected to weaken after a strong first half of the year. While sluggish economic growth has impacted consumers around the world, pork continues to hold a relatively stable position on consumers’ plates, notes the Rabobank report. The reasons for the weaker performance vary from region to region. In Europe, pork consumption remains under pressure from persistently high prices. In the US, demand was slightly below expectations at the start of the summer as uncooperative weather and poor air quality hampered the start of the barbecue season. And in China, pork consumption remains weak due to a weak economy and heat waves across the country. Chenjun Pan, senior Animal Protein analyst at Rabobank, expects global trade to weaken in the second half of 2023. “Inventories of frozen pork in China are high due to weak consumption, putting pressure on imports. In addition, tighter supply in the EU is limiting shipments from the region,” said Pan. The Rabobank report highlights that pork supply in the EU and UK fell in the first four months of 2023, with double-digit declines in some countries. This tight supply is supporting high prices, which in turn is putting pressure on consumption. Meanwhile, in China, pork supply continues to outstrip demand, putting pressure on prices and leading to multi-month losses for producers. Rabobank adds that the liquidation of the country’s sow herd will continue in the second half of the year. Supply is also plentiful in the US, where producers have relatively healthy balance sheets after two years of outsized profits. However, given the forecast losses, Rabobank expects the US herd liquidation to continue until 2024.

An influential select committee report has called on the government to take steps to support increased nitrogen fertiliser production in the UK. The Environment, Food and Rural Affairs (EFRA) Committee has called on the Government to examine the incentives offered by competing nations and to produce an action plan within the next six months. The committee said nitrogen fertiliser plays a vital role in UK food security and the production of the ammonia used in it creates large amounts of carbon dioxide gas as a by-product, which is vital to the food supply chain. However, there is only one nitrogen fertiliser plant in the UK, which undermines UK food security and the lack of alternatives has led to a significant increase in UK prices at a time when the sector is already under significant price pressure. Given the importance of nitrogen fertiliser to UK food production and food security, the Government should set out how it will ensure its continued production in the UK. Given that Europe and the United States are intervening directly in their own fertiliser sectors, it seems completely remiss for the UK to do nothing. Responding to the publication of the report, Ed Barker, head of policy and external affairs at the Agricultural Industry Confederation (AIC), said: “We welcome the key findings of the EFRA Select Committee report. The AIC will continue to work with the committee and MPs as part of its efforts to represent the interests of the UK’s agricultural supply industry.”

A team of European scientists has found a key pig gene for the replication of African Swine Fever (ASF) virus. Researchers from the Friedrich-Loeffler-Institute (FLI) in Germany and the Roslin Institute of the University of Edinburgh, Scotland, recently conducted this piece of research, which aimed to find out which pig genes are needed for the ASF virus (ASFv) to replicate. The study describing their findings was published in August 2023 in the peer-reviewed scientific journal Scientific Reports and shows that there is a gene from the pig’s immune system that is key to this process. This provides important new insights into the biology of the ASFv that could form the basis for future research approaches. ASFv has a large DNA genome from which more than 160 viral proteins are produced in infected cells. Little is known about the functions of many of these viral proteins. It is also unclear which cellular proteins are used by the ASF virus to enter the host cell. To identify host proteins important for ASFv, scientists at the Roslin Institute provided a CRISPR/Cas9 expression library as a molecular tool that allowed their colleagues Friedrich-Loeffler-Institute to knock out all known genes in the pig genome individually in vitro and test the resulting cell cultures for susceptibility to ASF virus infection. That led to the identification of several genes of the major histocompatibility complex II (MHC II) as relevant factors for the reproductive capacity of ASFv, the news release explained. In particular, the MHC II receptor protein SLA-DM was shown to be required for efficient ASFv infection. Therefore, the research team concluded, SLA-DM may be a suitable target protein for the development of effective therapeutics against ASF or ASFv resistant pig breeds.

More than 70% of the body’s immune cells are located into the gut, which means there is a close connection between intestinal microbiota and the immune system. The sow’s microbiota influences the piglet’s immune system development and, consequently, their growth and survival. At birth and during early life, the piglets are highly dependent on the maternal passively derived immunity for the survival. The transfer of immunity initially occurs through colostrum. Antibodies are big proteins, and only get into the piglet’s blood stream in the first hours of life before the gut closure. Immunoglobulins from the mother, including immunoglobulin G (IgG) can be absorbed through the colostrum. The probiotic yeast Saccharomyces cerevisiae boulardii CNCM-I-1079 included into the sows’ diet, has shown positive results on the IgG colostrum concentration. Recent studies have shown that animals raised on artificial milk formula rather than maternal milk have a higher susceptibility to disease, also linked to a reduced intestinal microbiota diversity. Cytokines and chemokines are making connections between the different organs to coordinate the immune response. They are biomarker peptides critical for humoral and cell mediated immunity. Cytokine gene expression in the lungs of piglets was influenced by the treatment of sows. The lower expression of cytokines in the lungs of the piglets born and nursed from supplemented sows suggests a reduced inflammatory reaction compared to the piglets from non-supplemented sows. The immune transfer through colostrum, modulation inflammatory response, etc. translated to better performance of the piglets after weaning, reflecting maternal imprinting. Probiotics, such as Saccharomyces cerevisiae boulardii CNCM-I-1079, are positively affecting the gut microbiota from the sow to her piglets and driving their immune system to a more mature one and are interesting tools to support piglet quality and reduce antibiotic use.