Feed Lot

APR-MAY 2017

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  April/May 2017 25 ADVANTAGE ADVERTISING cows that calved in at a body con- dition score of 6 (ideal), 98 percent showed estrus by day 40 of the breeding season, and 90 percent were confirmed pregnant by day 4 0. Comparatively, a drop to a BCS 5 resulted in just 80 percent in es- trus and 65 percent confirmed pregnant. At BCS 4, only 56 percent were in estrus and 43 percent were confirmed pregnant. "For every 100 cows, a single point drop from a BCS 6 to a 5 at breeding could equate to roughly 25 calves that are either born later or are not born at all because nu- trition slipped post-calving," says Dickerson. "Calves born later re- sult in less weaning weight." The amount of energy provided to a cow also influences her milk production and lactation length, which impacts nutrition available for her calf. Research has shown that a cow consuming 170 Kcal per metabolic body weight will maintain peak milk production for approximately 8.3 weeks at 20.2 pounds of milk per day, and will produce 2,726 pounds of milk over the course of 210 days. Providing additional en- ergy, at a level of 290 Kcal per meta- bolic body weight, resulted in maintaining peak milk production for 10.9 weeks, at 24.2 pounds of milk per day and a total 210-day production of 3,742 pounds. Set up for spring success "It's easy to get excited about a little bit of green grass, but in real- ity, there may not be enough vol- ume to support a cow's increasing requirements," says Dickerson. He emphasizes, "Cows will run for green grass and burn more energy searching for grass than what they'll consume. The energy deficit can result in lost condition." A visual loss in condition often means you've already left some performance on the table. Supple- ments can help regain condition, but playing catch-up typically means feeding large amounts of supplement at a higher cost. Dickerson recommends provid- ing free-choice hay and supplement early until grass is lush and plentiful. "Offer hay early and continue feeding it long enough for cows to a chieve a BCS 6 at calving and no l ess than a BCS 5.5 at breeding," says Dickerson. Hay can be complemented with a self-fed supplement containing intake control properties, which allows cattle to decide if they need additional energy and protein. Cows won't consume much supplement if forage is meeting their require- ments, but will consume more supplement if forage is not meeting requirements. " Supplementation can help c ows maintain body condition through all seasons and can opti- mize cow performance with exist- ing forage," concludes Dickerson. Cover the spring nutrient gap, and set your cows up for greatness. FL Gearn Modular Steam Flaking Systems • Exclusive Modular Mill design reduces field construction time and overall costs. • Low cost alternative to conventional steam flake facility construction. • Pre-wired and plumbed at the factory. • Includes MCC, Boiler System, Flaking Mills, Steam Chests, Leg and Scalper. • All optional features available • Turn-key installation provided by our experienced millwright team. • 18x36, 24x36, 24x48 and 24x56 mill sizes available. Gearn Inc. 3375 US Hwy 60, Hereford, TX 79045 T: 806-357-222, Fax: 806-357-2224, E-mail: sales@gearn.com Web: www.gearn.com

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