Recent studies have demonstrated that providing rye-rich feed to pigs also promotes the animals’ health. In light of this, the Federal Ministry of Food and Agriculture (BMEL) has now given the go-ahead, and has thus granted approval, for the Rye-SaFe project. Rye-SaFe aims to investigate if salmonella contamination in sow husbandry and piglet production can be reduced by using rye-rich feed. KWS is involved in the research project from the industry side along with the livestock cooperative Viehvermarktung Walsrode as a project partner; other businesses of the German Raiffeisen Association; the University of Veterinary Medicine Hannover, Foundation; and additional project partners.1
KWS is already involved as an industrial partner in the 6-R2 project funded by the BMEL. Among other aspects, this project is also examining the connection between higher rye content in feed and lower salmonella levels. The investigation is being carried out in pig farms. “In addition to the research project, we have carried out an exceptionally interesting field study involving more than 117,000 feeder pigs on 11 farms,” explains Willi Behrens of Viehvermarktung Walsrode. “It was possible to reduce salmonella contamination among the animals by two-thirds — entirely without medication and only by changing the feed.” The 6-R2 project provides scientific proof of this. Rye-SaFe will begin at an earlier step and investigate how salmonella contamination can be reduced by employing new feeding concepts before the pigs are even transferred to fattening farms. “We have found that many piglets already have salmonella when they’re delivered to the farms, so we have to ensure the contamination levels of the sows — and subsequently, of course, the piglets — are lower,” Behrens says. Fewer animals exposed to the salmonella pathogen means the animals are healthier and fewer antibiotics have to be used in the pens. This also has a positive impact on food safety since salmonella can be transmitted from animals to humans. As Behrens states: “If we can achieve all this — improved animal welfare, less medication and safer food — by simply implementing new feeding concepts, all sides will have gained a lot.” Rye-SaFe is also supported by large-scale field studies involving more than 3,000 sows, thus providing the scientific project with practice-based data. Combining a research project like Rye-SaFe with field studies was only possible through the close cooperation between the livestock cooperative Viehvermarktung Walsrode and the seed breeding company KWS.
Modern hybrid rye varieties for safe animal feed
The ability to confidently use rye in animal feed today is due to modern hybrid rye varieties with PollenPlus® technology, a development from KWS. “Rye has always been quite susceptible to the ergot fungus, which poses a problem for both human and animal health,” explains Dr. Andreas von Felde, who heads the animal feed projects for KWS. Due to rye’s open flowers, ergot spores can more easily gain access to the plant. In modern varieties, significantly improved pollen formation, quicker fertilization and rapid husk closure help to significantly reduce rye’s susceptibility to ergot. KWS has integrated these plant traits into the new rye varieties using traditional, natural breeding techniques. As von Felde states: “Ergot would considerably impact the fertility of animals, especially in sows. Thanks to progress made in plant breeding, we’ve succeeded in developing modern hybrid rye varieties with PollenPlus® technology that are virtually free of ergot.”