{"id":990,"date":"2021-10-20T13:46:47","date_gmt":"2021-10-20T13:46:47","guid":{"rendered":"https:\/\/4starvets.com\/?p=990"},"modified":"2021-10-20T13:46:47","modified_gmt":"2021-10-20T13:46:47","slug":"properly-prepare-gilts-to-match-farms-mycoplasma-status","status":"publish","type":"post","link":"https:\/\/4starvets.com\/properly-prepare-gilts-to-match-farms-mycoplasma-status\/","title":{"rendered":"Properly prepare gilts to match farm\u2019s Mycoplasma status"},"content":{"rendered":"<p>After living with <em>Mycoplasma hyopneumoniae<\/em> (<em>M. hyo<\/em>) for years, producers now know that maintaining a stable <em>M. hyo<\/em> status is key to reducing the disease\u2019s impact.<\/p>\n<p>\u201cThe more we know about <em>M. hyo, <\/em>the more we realize how important it is to have a gilt properly prepared for either a negative or a positive farm and not mix those statuses,\u201d said Cary Sexton, DVM, Four Star Veterinary Service in Kinston, North Carolina.<\/p>\n<h3>Synchronize <em>M. hyo<\/em> status<\/h3>\n<p>\u201cFirst, you need to understand the status of the sow farm the gilts are going to,\u201d Sexton said. \u201cThen, the gilts need to be properly prepared, either exposed and vaccinated or both if going to a positive farm or kept clean if going to a negative farm. I would recommend working with your veterinarian to determine the proper sow-farm status.\u201d<\/p>\n<p>Most commercially available genetic stock now has a negative status, he explained. Any sow farm with a different <em>M. hyo<\/em> status will need a plan to synchronize health of the gilts before they are mixed with the herd.<\/p>\n<p>\u201cThere are multiple ways to synchronize, but it has to be some type of exposure,\u201d Sexton said. \u201cExposure should be at weights around 40 pounds to make sure it\u2019s long enough for the animals to get through an infection and clear the active shedding phase. If you put shedding gilts into a stable-positive farm, it could turn clinical.\u201d<\/p>\n<p>The most common exposure methods are direct inoculation with a live <em>M. hyo<\/em> culture or fogging with lung homogenate material.<\/p>\n<p>\u201cDirect inoculation is the most labor intensive,\u201d he said. \u201cYou have to catch each animal and inoculate it. In a barn with 1,000 gilts, it is a full day of work versus fogging that only takes a couple of hours after the environment is readied for the procedure. The most difficult part is getting exposure done consistently on an every-group basis.\u201d<\/p>\n<h3>Mounting immune response<\/h3>\n<p>After exposure, gilts must be closely monitored for illness, including secondary infections.<\/p>\n<p>Animals sickened by exposure need to be treated to help them recover and to ensure the infection doesn\u2019t become chronic, Sexton explained.<\/p>\n<p>\u201cYou want them to get exposure and mount an immune response while continuing to grow. Ultimately, they will stop shedding or shed at a very low level by the time they are ready to move onto the sow farm,\u201d he said.<\/p>\n<p>Because <em>M hyo<\/em> is a very slow-growing pathogen, it may take 7 months to complete this process. Producers must plan for adequate time and space to handle gilts for these extended periods. This time lapse increases with natural exposure as each new exposure results in resetting the time clock.<\/p>\n<h3>Eliminating <em>M. hyo<\/em><\/h3>\n<p>Interest in <em>M. hyo<\/em> elimination is growing as producers learn about its benefits. A negative herd could see a $5-to-$7-per-market-hog improvement from when it was <em>M. hyo <\/em>positive, particularly in the growing-pig segment of production.<\/p>\n<p>Two types of operations are more interested in eliminations, according to Sexton. A farrow-to-finish farm will recoup the most benefits by owning hogs to market, while a farrow-to-wean operation sees a benefit in the health of weaned pigs sold to customers.<\/p>\n<p>Improvements in testing methods for <em>M. hyo<\/em> also help make eliminations successful. Deep-tracheal swabs examined by polymerase chain reaction are reliable and repeatable, he added.<\/p>\n<p>If an operator is considering an elimination program or wants a change in the <em>M. hyo<\/em> status, Sexton recommends first determining the herd\u2019s status. Then he or she should meet with a veterinarian to discuss options for the farm.<\/p>\n<p>\u201cHave a conversation about wanting to make a change in <em>M. hyo<\/em> status or looking for a different source of genetics,\u201d he said. \u201cYou need to [identify] the cost-benefit ratio of each option. Is it worth the time and money to do an elimination? Or is there a way to get exposure of these animals to produce a stable-positive farm? You may be surprised which one rises to the top.\u201d<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>After living with Mycoplasma hyopneumoniae (M. hyo) for years, producers now know that maintaining a stable M. hyo status is key to reducing the disease\u2019s impact.<\/p>\n","protected":false},"author":6,"featured_media":512,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[3],"tags":[75,58,59,76],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Properly prepare gilts to match farm\u2019s Mycoplasma status - Four Star Veterinary Service<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/4starvets.com\/properly-prepare-gilts-to-match-farms-mycoplasma-status\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Properly prepare gilts to match farm\u2019s Mycoplasma status - 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