26 NEBRASKA CATTLEMAN April/May 2025 MADDUX Cattle Company PHASE 1: “Maternalizer” MATURE BRED COW HERD DISPERSAL Wednesday, April 9, 2025 Ogallala Livestock Auction n Ogallala, Nebraska Our 2025 sale will launch a planned three-year cow herd dispersal. The cow herd has been intentionally developed over decades to emphasize maternal traits: extremely functional, fertile and efficient. Maddux Cattle Co. is a birth to harvest cow-calf operation with decades of selection for longevity, efficient gain and carcass value. If you are considering rebuilding your cow herd with proven, maternal excellence, we encourage you to take advantage of the generational development and volume offering of this herd. The cattle will continue to graze in the Sandhills and can be viewed prior to the sale with advanced notice. SELLING APPROX. 875 HEAD OF BRED FEMALES, INCLUDING: 177 Two-year-old first calf heifers 53 Three-year-old cows 119 4–5-year-old cows 263 6-year-old cows 263 7+ year-old cows MADDUX CATTLE COMPANY 512 Broadway n Imperial, Nebraska 69033 n John Maddux Mobile: (308) 350-1133 n Office: (308) 414-6682 n jmdxcc@gmail.com n MadduxCattle.com Maddux 4.798x7.5 4c-NE Cattleman.indd 1 3/6/25 11:41 AM source of trace minerals. Likewise, cattle fed the inorganic trace minerals had a greater prevalence of total digital dermatitis lesions by the time cattle were shipped to market. Trace Mineral Research Digital dermatitis has been recognized for many years in dairy herds, nois involving 1,077 growing-finishing steers. The cattle had been in the feedlot prior to beginning the study, and it was determined during the initial digital dermatitis evaluation that a substantial percentage of the cattle already exhibited digital dermatitis lesions. Steers were fed either a control supplement providing similar levels of trace minerals (Cu, Co, I, Mn, Se and Zn) from primarily inorganic sources or the Availa-Plus DD Formula. Cattle were individually scored for digital dermatitis lesions throughout a 60-day adaption phase and until steers were shipped to the harvesting plant. The study found that 54.03 percent of steers fed the inorganic trace minerals diet developed digital dermatitis lesions, while only 26.72 percent of the steers fed the Availa-Plus DD Formula had digital dermatitis lesions. Growth performance, final live weight and hot carcass weights were negatively impacted when steers were observed to have active digital dermatitis lesions (M2) compared to steers with no M2 lesions over the study period. When a similar healthy animal is compared to an animal with just one M2 lesion, the steer with the lesion had a significant body weight loss of approximately 23.2 pounds and a mean reduction in hot carcass weight of 12.1 pounds. Average daily gain of lame beef cattle was reduced by 5.5 percent when compared to similarly sound cattle – 3.41 pounds per day vs. 3.53 pounds per day. Lameness diagnosed in the finishing phase (121 days on feed until harvest) adds an average of 14.3 additional days on feed for infected animals. Prevention and Control There is a significant economic cost related to digital dermatitis. However, feedlots that integrate a prevention strategy that incorporates management, hygiene and beef cattle nutrition that includes performance trace minerals can mitigate the impacts of digital dermatitis on feed efficiency, body weight and hot carcass weight, as well as limit the prevalence of digital dermatitis. ~NC~ HAIRY HEEL WARTS IN FEEDLOT CATTLE CONTINUED FROM PAGE 25 and research using Zinpro products has shown efficacy in controlling or mitigating the prevalence of digital dermatitis lesions. Based on the observed responses in dairy cattle, two studies have been conducted in beef cattle feedlots to evaluate the efficacy of the Availa Plus DD Formula. Both research studies were conducted by the University of Wisconsin School of Veterinary Medicine. The first study was conducted at a commercial feedlot in northern Illi-
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