Deciphering digital dermatitis

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ASSOCIATION UPDATE menu of online education resources that are updated and increased in scale, scope and topic as needs arise. For example: DCRC offers a comprehensive update of the latest dairy cow and dairy heifer synchronization protocols. The detailed document is available in Spanish or English. Members may sign up for the latest webinars or access recorded archives of past webinars. Members may access proceedings from past conferences, as well. Members also receive bi-monthly e-newsletters full of new research, articles and timely topics related to dairy reproduction; archived issues are also available. An “Ask the Expert” opportunity is available, as well, enabling members to interactively tap into DCRC’s expertise on any reproductive topic. These materials and initiatives can help producers around the world make informed management decisions, as well as keep key advisors—including veterinarians—updated on the latest information and trends. EXPANDING BORDERS DCRC has also developed a number of initiatives to extend its global reach and broaden membership. For instance, DCRC has created an international electronic membership for dairy industry partners outside of North America. This membership category features a reduced price to international members who are not able to travel to the annual meeting in a given year. E-members receive: Access to Ask the Expert Unlimited access to education resources from past conferences Unlimited access to previous volumes of the DCRC e-newsletter Access to new and previous webinars Access to estrus synchronization protocols Should an international e-member choose to attend an annual meeting, he or she would be required to upgrade to regular membership (at full cost) with meeting registration. DCRC has also worked to expand its international audience—offering outreach at large cattle reproduction meetings in South America this year. In addition, DCRC presented its first Spanish-language webinar this summer, with more non-English webinars on tap for 2017. These efforts will broaden access to the information that DCRC provides to members and potential members globally. For more information about DCRC and its programs and resources, visit www.dcrcouncil.org . Sign up for RxExpress by 12/01/16 and receive our Electronic Health Papers and Coggins solution, FREE for 12 months! Relax. Quick accurate validation Trusted by industry leaders Secure record storage Provides real-time VFD updates to veterinarians, feed mills and producers Dedicated training and set up support Highly accessible online and live phone support Works with all major web browers - No software installations - Secure, cloud-based system - FDA 21 CFR I II complaint 888-633-4030 28 OCTOBER 2016 bovinevetonline.com
BRIEFS NEPHROSIS CASES AT THE ISU-VDL BY DREW MAGSTADT, DVM, M.S.; SCOTT RADKE, DVM; KENT SCHWARTZ, DVM, M.S.; STEVE ENSLEY, DVM, M.S., PH.D.; GRANT DEWELL, DVM, M.S., PH.D.; ANNETTE O’CONNOR, BVSC, MVSC, DVSC, FANZCVS Diagnosticians at the Iowa State University Veterinary Diagnostic Laboratory (ISU-VDL) have recently identified cases of fatal idiopathic nephrosis/renal failure in several feedlots geographically dispersed throughout Iowa. All known cases have originated from calves greater than 750 lb., several near market weight, and all on feed for four weeks or more. Clinical description Clinical signs described by submitting veterinarians in these cases include calves that abruptly go off feed, become markedly gaunt and die within a few days despite therapeutic interventions. Other signs occasionally reported include trembling, seizure activity and bloody feces immediately prior to death. Serum chemistry testing of clinically affected animals has revealed elevated BUN, creatinine and phosphorus. In cases encountered thus far, morbidity is very low, often with just a single animal in a pen showing clinical signs at any one time. However, the clinical course in a group is cumulative with multiple animals sequentially affected over a period of weeks to months, and has approached 10% morbidity with up to 100% case mortality within a particular pen of cattle or within the same feedlot. Capsular surface (left) and cut surface (right) of kidney from a nephrosis case have diffusely pale cortical tissue. attempt to rule out known nephrotoxic compounds. ISU-VDL wishes to inform veterinarians of the clinical description of these cases, to encourage client vigilance for unexplained deaths and to assure that kidneys are evaluated during necropsy of all feedlot animals that fit this description. If veterinarians at your clinic encounter any suspect cases, please contact Drs. Vickie Cooper, Kent Schwartz, Steve Ensley, Drew Magstadt or Scott Radke at the ISU-VDL at (515) 294-1950. Diagnosticians at the ISU-VDL are interested in investigating any confirmed or suspect cases that fit this clinical description. PHOTO: IOWA STATE UNIVERSITY Necropsy findings Kidneys of affected animals have bilateral enlargement and are diffusely pale/yellow. On cut surface, the renal cortex is diffusely pale/yellow. In several cases normal amounts of rumen content is present with abomasal reddening, linear erosions, and scant intestinal and colonic content. Respiratory lesions have not been commonly found at necropsy. Lung lesions that have been present have been mild and limited to more chronic lesions such as fibrous pleural adhesions. Histologic lesions Microscopic lesions in the kidney range in severity but include dilated proximal and distal tubules lined by flattened epithelium, mild to moderate renal fibrosis and scattered lymphoplasmacytic nephritis. Moderate to large numbers of crystals are present within collecting ducts near the cortico-medullary junction, with occasional crystals also noted in proximal and distal tubules. Crystals are birefringent with radiating spokes and are consistent with calcium oxalate. Potential causes As of late September, no definitive cause has been identified in these cases. Site investigations are underway to identify potential predisposing factors common to those feedlots with confirmed cases. Additional testing is also in progress in an bovinevetonline.com Maximize Research shows that cattle on accelerated step-up programs receiving Lactipro advance® eat less feed during the first 30 days and gain the same as conventional cattle over the entire feeding period. This results in an overall 3% improvement in feed conversion. 1 1 Data available upon request. To learn more about maximizing ® 877-907-5315
Page 1 and 2: OCTOBER 2016 The business and scien
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Page 5 and 6: The sound of a healthy, weaned calf
Page 7 and 8: TAKE THE STRESS OUT OF BRD. Target
Page 10 and 11: ANIMAL HEALTH The Iowa DD scoring s
Page 12 and 13: ANIMAL HEALTH More advanced clinica
Page 14 and 15: ANIMAL HEALTH WHEN NOT TO USE IVERM
Page 16 and 17: ANIMAL HEALTH ANTIBIOTIC RULES: KNO
Page 18 and 19: PRODUCT INFORMATION NADA 141-299, A
Page 20 and 21: ANIMAL HEALTH DART DEBATE Readers d
Page 22: Brief Summary for use in Cattle: Se
Page 25 and 26: some. Rate them at purchase and rec
Page 27: CHOOSE A HEALTHIER, MORE PROFITABLE
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Page 33 and 34: KEEPING YOU CLEAN AND EFFICIENT SIN
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Deciphering digital dermatitis

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