shop online at www.missourivalleyshopper.com July 28, 2015 • Page 3 Avian Influenza and City Dwellers BROOKINGS, S.D. The emergence of highly pathogenic avian influenza (HPAI) in the spring of 2015 was devastating for many large turkey and egg layer farms, but the virus also affected smaller “household” flocks, explained Russ Daly, Professor, SDSU Extension Veterinarian & State Public Health Veterinarian. “City dwellers are increasingly turning to backyard poultry flocks for food as well as for the enjoyment of raising these animals. These producers, as well as other citizens who enjoy songbirds, gardening and other activities in their urban backyards, have found themselves needing to increase their knowledge of this devastating disease,” Daly said. While the spring 2015 outbreaks have subsided, Daly said there is considerable worry about a reemergence of the virus in the fall. With this in mind, Daly answers questions on what urban citizens should know about highly pathogenic avian influenza. Answer: They’re different from human influenza viruses. The influenza viruses prevalent during “cold and flu” season almost exclusively affect people and not other animal species. Similarly, these highly pathogenic avian influenza (HPAI) viruses exclusively affect birds. They have not caused illness in people - even those with close contact with a lot of affected birds. Answer: They’re especially severe for some - but not all - birds. The term “highly pathogenic” refers to strains of avian influenza that can cause severe and rapid illness and death in affected poultry. Of all the bird species studied, mallard ducks were found to carry the virus in large amounts while not becoming ill themselves. They (and likely other waterfowl as well) spread the virus through their droppings (influenza viruses in waterfowl tend to affect the digestive tract rather than the respiratory tract). Turkeys appear to be more severely affected than chickens. For these particular HPAI viruses, the role of other birds has not been well-studied. Songbirds and other non-waterfowl species (including wild pheasants) are rarely carriers of avian influenza viruses in general, but have been implicated in the transmission of some strains of the virus. One backyard pheasant flock in Washington state was affected by the outbreak, but it has not been observed to affect wild pheasants. Answer: How the virus was carried to large turkey and chicken barns is still being studied. Because of the timing of the outbreaks and the ability for waterfowl to carry and spread large amounts of the virus, it’s generally accepted that those birds carried the virus to these facilities during their migration in the spring - or possibly last fall (there is evidence that the virus could survive up to months in the right weather conditions). Farms situated closer to water ponds and cornfields, where migratory birds spend time, tended to be more likely to succumb to an outbreak, especially after windy weather that could have blown contaminated material into barns. Question: Is there the potential for avian influenza virus to affect poultry in towns and cities? Answer: Because of the presumed role that waterfowl play in HPAI transmission, anywhere wild ducks and geese congregate could be a potential source for the virus, shed in the birds’ droppings. This could include small lakes and ponds in urban parks, retention ponds, or housing developments adjacent to wetlands. Citizens should keep in mind that these viruses have no effect on people, other animals or the safety of food. A backyard playing host to children, pets, songbirds and gardens will be unaffected - even if the virus somehow gets dropped or blown into that space. A backyard playing host to chickens, ducks or other domestic poultry is another story, however. Backyard poultry flocks have not been spared by HPAI outbreaks, and infections of poultry within city limits are possible - and more likely if the yard is near a site where wild ducks and geese spend time. Question: How can I protect my backyard flock? Answer: Backyard poultry should be excluded as thoroughly as possible from contact with wild waterfowl. They should not be allowed access to nearby ponds or water sources that may have been contaminated by wild waterfowl species. If backyard flocks are housed near these areas, it may be prudent to provide a solid barrier between the poultry and the adjacent wetland, to prevent contaminated dust or plant material from blowing into the housing area. All backyard flock owners should follow appropriate biosecurity measures. Examples of these rules, which are meant to exclude new potentially hazardous germs from entering a population of animals, can be found at the USDA Animal and Plant Health Inspection Service website. If any unexplained death loss or illness occurs,to Call 665-5884 a veterinarian should be conplace your ad tacted immediately. here. We have more to learn “We are learning more about the HPAI viruses that recently devastated poultry operations throughout the Midwest. But more remains to be learned,” Daly said. Daly added that influenza viruses are notorious for changing. “For these reasons, it’s important for all of us to keep abreast of current information regarding this Call 665-5884 to pathogen, especially as wild bird migration commences place your ad here. this fall and next spring,” he said. ?iGrow Interested in this spot? Interested in this spot? Daily Rainfall Simulations at 2015 Dakotafest BROOKINGS, S.D. - A lot can be learned about soil health by watching water infiltration, explains Pete Bauman, SDSU Extension Range Field Specialist. “Water infiltration varies depending on organic matter, erosion, compaction, soil fertility, carbon sequestration etcetera - all these important factors determine whether or not a field or pasture is healthy or in need of repair,” Bauman explained. South Dakotans can see for themselves during the daily Rainfall Simulator presentations held at 2015 Dakotafest Aug. 18-20, in the SDSU Extension Pavilion at 9:30 a.m. The SDSU Extension Pavilion is in a new location in booth 600, located on the corner of 6th Street and the West Entrance (for Dakotafest regulars, this is the road which leads past the ribeye sandwiches on the way to the northwest corner.) The simulation is co-hosted by SDSU Extension and South Dakota Natural Resources Conservation Service (NRCS). The rainfall simulator was developed by NRCS and is a live demonstration that ‘simulates’ real rainfall events to test water infiltration in several different soil management situations including: conventional tilled cropland, no-till cropland, no-till cropland with cover crops, poorly managed rangeland and healthy rangeland. “NRCS staffers Jeff Hemenway and Stan Boltz have been doing this presentation for a long time, and SDSU Extension is fortunate to partner with NRCS for this forum,” Bauman said. “It’s our job to provide South Dakota farmers and ranchers with research-based information that they can apply to improve their operations - this simulator is a great tool to provide a first-hand look at the best soil management techniques for cropland as well as grazing lands.” He added that many Dakotafest attendees have operations with both crops and livestock www.missourivalleyshopper.com basically most wear two hats. “They wear their cowboy hat taking care of livestock and put on the baseball cap when they farm,” Bauman said. “When we discuss soil management, people frequently assume it only impacts cropland, but the fact is, there is a lot that can be done to improve rangeland productivity - this presentation will address both.” During the demonstrations, time will be set aside for attendees to ask Bauman as well as Visit our Web site at the NRCS representatives, Jeff Hemenway and Stan Boltz, questions. 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