Feed Lot

JUN 2018

Feedlots and cow/calf operations in the beef industry who feed 500 or more has annually on grains and concentrates; maintain 500 or more beef cows; backgrounder, stocker/grower, preconditioner; veterinarian, nutritionist, consultant

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FEED•LOT June 2018 19 most by heat stress – those with large cattle. "Those are the ones that need care and consideration first." Myers said although shade in every feed yard pen is not the "new normal" yet, it is catching on, and is definitely a way to protect the investment of livestock and main- tain efficiency and gains in the hot winter months. FL founder of the Beef Cattle Insti- tute at Kansas State University said the most effective heat stress preventative for black-hided cattle is shade. "Shades can be sturdy, permanent structures, or mobile, portable structures," he said. "The shade portion of the structure does not need to be solid." The benefits of shade for cattle are no different than providing shade for outdoor workers. When given the choice, University of Cal- ifornia-Davis professor Dr. Frank Mitloehner reported that cattle with access to shade spent the majority of daylight hours under the shade. Knowing shade is a preferred area for livestock, Larry Myers with Strobel Manufacturing conducted a ground temperature test under a shade product his company devel- oped, the Strobel Super Shade. On a hot day in July, the ground tem- perature ranged from 137 degrees to 147 degrees in the sunlight. Under the shade, the temperature dropped to 103 degrees. The temperature difference is not surprising, and Mitloehner's re- search backed up the performance advantages shade offered. Shaded animals had higher dry matter intake, gained more weight, had better average daily gain and more efficient conversion. Myers said cattlemen are invest- ing in shades due to the number of livestock lost in extreme heat. "I was talking to a customer who lost 60 head of cattle one year," he said. "After talking to his insur- ance adjuster, he has added shades in his pens. People are taking heat stress seriously." When considering purchasing or building a shade structure, Myers said to think about the structure throughout the year. A structure that limits sunlight during winter or wet months will slow the drying time in the pens. However a shade structure that can be moved and has a rollup tarp is a real advantage in that it will not limit sunlight during certain times of year when it is needed. In addition to the type of struc- ture, USDA also recommends 20 to 40 square feet of shaded area per head so that improvements in animal comfort from shade are not offset by overcrowding. If it's not possible to offer shade in all pens, Thomson suggested prioritizing shade for pens affected Even the Smallest Components Can Have a Big Impact According to research trials, the strain Lactobacillus acidolphilus BT-1386 found in Micro-Cell probiotics has been shown to: • Decrease shedding of E. coli O157:H7 1 • Reduce re-infection of Salmonella 2 • Increase average daily gain 3 • Improve feed to gain 4 Probiotic strain Lactobacillus acidophilus BT-1386, available exclusively from Lallemand Animal Nutrition, was added to the 2015 pre-harvest production best practice (PBP) document released by the Beef Industry Food Safety Council (BIFSCo). It is commercially available for purchase under the brand names Micro-Cell FS and Micro-Cell FS Gold. Every ration component plays an important role on overall performance and ensuring you provide the best beef product to the consumer. Consistent performance lies in the details. Micro-Cell® probiotics are high quality feed additives that feature proven bacterial strains that help your cattle maintain an ideal intestinal balance. Micro-Cell probiotics are a small yet critical component and another tool to help you produce a top quality product that consumers want. 1 Production Best Practices (PBP) to Aid in the Control of Foodborne Pathogens in Groups of Cattle. Beef Industry Food Safety Council Subcommittee on Pre-Harvest. Spring 2015. Accessed March 19, 2015. 2 Tabe ES, Oloya J, Doetkott DK, Bauer ML, Gibbs PS, Khaitsa ML. Comparative effect of direct-fed microbials on fecal shedding of Escherichia coli O157:H7 and Salmonella in naturally infected feedlot cattle. J. Food Prot. May 2008; 3(71): 539-544. 3 Lallemand Animal Nutrition. Unpublished. United States. 1996. 4 Hutcheson D and Lallemand Animal Nutrition. Unpublished. United States. 1986. LALLEMAND ANIMAL NUTRITION Tel: 414 464 6440 Email: LAN_NA@lallemand.com www.lallemandanimalnutrition.com ©2016. Micro-Cell is a registered trademark of Lallemand Animal Nutrition. Not all products are available in all markets nor are all claims allowed in all regions.

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