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Don’t Forget About Your Dry Cows!

University of Minnesota Extension, Stearns County News
June 4, 2014         
           
Source:  Emily Wilmes, Extension Educator-Livestock
University of Minnesota Extension
Stearns, Benton & Morrison Counties

 

Don’t Forget About Your Dry Cows!
By Emily Wilmes, University of Minnesota Extension

ST. CLOUD, Minn.(06/04/14) — It’s no secret, spring is a busy time for farmers.  There’s a lot to be done, and some tasks tend to take priority over others.  Right now, farmers are focused on the fields.  In the summer, dairy farmers will be focused on keep production up and SCC low, and insects and pests at bay.  But what about dry cows?!  Dry cows are an important part of the dairy production puzzle, and it’s important that they are not overlooked.  What happens to a cow during her dry period will influence how she performs as a member of the lactating herd.  Let’s review a few key components of dry cow care that shouldn’t go overlooked.

First, and one of the most important is nutrition.  Dry cow rations may not demand the same quality and precision as those for lactating cows, but they are still an integral part of a transition cow management program.  The nutrition a dry cow receives can also prevent problems like hypocalcemia, milk fever, ketosis, and acidosis.  Here are some components of a good dry cow ration to keep in mind:

  • Inclusion of trace minerals such as cobalt, copper, iodine, iron, manganese, selenium, and zinc
  • Feeding anionic salts to maintain a negative dietary cation-anion difference (DCAD)
  • Feeding low levels of potassium to prevent hypocalcemia and milk fever
  • Feeding niacin to help reduce blood ketone levels
  • Access to plenty of clean, fresh water

Along with nutrition, we also want to think about milk quality and mastitis in our dry cows.  Why is this important?  50-60% of all new infections caused by environmental pathogens occur during the dry period, and over 50% of clinical coliform mastitis events in the first 100 days in milk originated during the dry period.  Some easy ways to prevent dry cows from calving in with mastitis are treating with a dry cow mastitis tube, maintaining a clean environment, and vaccinating to maximize immune defenses.

Lastly, consider if and how you cool your dry cows on hot summer days.  Research trials done on cooling dry cows and all have shown an improvement in milk production the subsequent calving, ranging from a couple of pounds per day up to 11 pounds per day.  Cows that are cooled for the entire dry period performed better than those that were cooled for only a part of the dry period.  Consider shade, fans, and even sprinklers where your dry cows are housed, as the profit from higher milk production can help offset costs. 

There are many things happening on your farm, but don’t forget about your dry cows!  Nutrition, mastitis management, and heat abatement are just some of the aspects of dry cow management to consider.  If you have additional questions, visit www.extension.umn.edu/dairy.
 

Contacts

Emily Wilmes
Extension Educator, Ag Production Systems - Livestock
(320) 255-6169
krek0033@umn.edu
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