BOTTOM LINE
THURSDAY, APRIL 18, 2019 SECTION D
Sharing ideas, solutions, resources and experiences that help dairy producers succeed.
Rear heifers with rotational grazing
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airy heifers are often raised in confinement and fed forages that have been harvested and stored. But rotational grazing is an option that can support growth between 1.8 and 2 pounds of gain per day. In addition it can reduce expenses and labor when managed properly. Operations that rotationally graze heifers typically see decreases in cost and labor for feeding, cleanMATT ing, bedding and AKINS housing. In an optimal rotational-grazing system animals are moved to a new paddock once forage is half-grazed. That allows faster regrowth of grass compared to grazing close to the ground. Depending on forage availability and intake, animals typically should be moved every one to three days. Heifers can be grazed as young as 4 to 6 months of age, though younger heifers require better-quality forage and an increased level of pasture management. Some find it preferable to graze pregnant heifers. The nutrient needs of pre-fresh heifers align with forage available by grazing. There’s no need for heat detection or confining heifers for breeding. Regardless of heifer age, pasture management and heifer-stocking rates are critical to increased forage productivity and quality – which drives heifer growth. A recent research project
well as the relationship with genomic-predicted body size. Sixteen heifers that were 5 to 6 months old were studied to Orchardgrass Meadow Fescue determine heifer growth and DM available/acre 1,300 lbs DM/acre 1,210 lbs DM/acre forage availability. Grazed on Forage Quality a 21-acre pasture, the heifers NDF 56.4% 53.4% were rotated twice weekly. The pastures were a mixture of NDF digestibility 61.8% 65.4% meadow fescue, festulolium, Crude protein 12.8% 15.4% perennial ryegrass, red clover Heifer growth and white clover. 2016 – 2018: lbs/day 1.63 lbs/day 1.72 lbs/day Initial results show forage 2017 alone* 1.49 lbs/day 1.78 lbs/day availability was excellent. 2,240 pounds of dry matter allotted four heifers per pasture. per acre in 2017 3,070 pounds of dry matter Heifers were 5 to 6 months old per acre in 2018 when put on pasture in midMay to late May each year. They As a result heifers had excelwere rotated to a new paddock lent rates of gain both years with every three to four days for 35 a 2.06-pounds-per-day average. days. Nitrogen was applied afComparatively growth of ter the first rotation and again heifers in confinement was 1.94 in mid-August to help with fall pounds per day in 2017 and 1.42 growth. in 2018, with a limit-feeding Forage available for grazing strategy used to control growth. was similar between the two Remaining forage-quality data grass species, with a slight adand genomic-data comparisons vantage for orchardgrass. But are still being analyzed. quality was better for meadow Changing a management sysfescue. Heifer growth across tem to include grazing can seem the three-year study was simdifficult. Fortunately a number ilar between orchardgrass and of resources are available to meadow fescue, though there assist, including universiwas some variation. Results in- ty-Extension personnel, county dicated meadow fescue was able land-conservation staff, U.S. CONTRIBUTED PHOTOS to maintain better forage quality Department of Agriculture’s throughout the grazing season. Natural Resources Conservation Grazing heifers is a viable option for rearing heifers. In addition to Service staff and – of course— sufficiently supporting heifer growth, grazing reduces time in confinement Orchardgrass had a large flush of spring growth with more other producers currently grazon concrete as well as reduces labor and feeding expenses. intense grazing. It also needed ing their herds. more clipping after heading quent heifer growth. The projat the University of Wisconsin-Marshfield Agricultural Re- ect was conducted from 2016 to to maintain vegetative excelMatt Akins is a dairy-heifer speciallent-quality growth. 2018 with six pastures – three search Station compared grazist with the University of WisconA recently concluded study with orchardgrass and three ing orchardgrass and meadow sin-Department of Dairy Science observed heifer growth on-pas- and UW-Extension. Email msakins@ with meadow fescue. Pastures fescue. It determined forage ture and in-confinement, as production, quality and subse- measured 2.5 acres and were wisc.edu for more information.
Comparison of orchardgrass and meadow fescue on forage production and quality, and subsequent heifer growth
Intranasal vaccines prompt quick response
THE #1 WRITER OF FARMS IN WISCONSIN SIN IS REWARDING POLICYHOLDERS Introducing the Rural Mutual Farm Dividend Program
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accinations are an important tool in any herd-health program, starting with calves. Intranasal vaccines play a slightly different role than injectable vaccines. It’s important for producers to be familiar with the differences as well as the options available. Vaccines are designed to initiate a response by the body’s immune system to protect against a specific disease. For a calf once the benefits GEOF of colostrum SMITH diminish, the calf’s immune system must produce its own antibodies. When an injectable vaccine is given a wholebody response is triggered. Lymphocytes and memory cells respond by producing antibodies to a specific disease, giving the calf protection against that pathogen. Even if the calf isn’t exposed to a pathogen until several months later, the memory cells will prompt the immune system to produce the right antibodies. Intranasal vaccines enter the body via the mucosal surface – nose, trachea and lungs. Rather than initiating a whole-body response, an intranasal vaccine prompts a local response in the calf’s upper airway and lungs. It also leads to protection against pneumonia. Because most respiratory diseases are spread by nose-to-nose contact, that method of vaccination mimics the typical route of exposure. Most intranasal vaccines contain modified-live cells. That means the virus in the vaccine remains alive and capable of replicating, but the cells have been altered to prevent onset of disease. Intranasal vaccines were initially introduced
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Please see SMITH, Page D2
For more information about the farm dividend program and how you may qualify, contact your local Rural Mutual agent or visit us on the web at www.ruralins.com/farm-dividend.
“We were able to get SCC down by over 100,000.” — Mark Spadgenske
“We were able to get SCC down by over 100,000 and are still going strong with Udder Comfort™ in our fresh cow routine. The results pay in quality and performance,” says Mark Spadgenske. He and his brother Mike and their families operate Spadgenske Dairy, milking 300 cows near Menahga, Minn.
Mark and Kristine Spadgenske with Adam, Kate and Seth at the 2019 Central Plains Dairy Expo. Not pictured is oldest son Ryan as well as Mark’s brother Mike and son John.
Quality Udders Make Quality Milk
Keep the milk in the system 1.888.773.7153 1.613.652.9086 uddercomfort.com Call to locate a distributor near you. For external application to the udder only, after milking, as an essential component of udder management. Always wash and dry teats thoroughly before milking.
“Our SCC used to be over 300,000. Then we brought home Udder Comfort samples from the 2017 Central Plains Dairy Expo in Sioux Falls and started spraying every fresh udder 2x/day for 3 to 4 days after calving. Within just 2 months, we saw counts come down, and by 6 months, they were down by over 100,000. “Two years later, we continue using Udder Comfort on all fresh udders. Our counts remain well below 200,000 for premiums we never saw before. We had tried other products, but this one did the job. We love it.”
SPADGENSKE DAIRY, MENAHGA, MINNESOTA Mark and Mike Spadgenske and families 300 cows, 75 lbs 3.9F 3.2P SCC consistently below 200,000