NDSU Extension Service - Ramsey County

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January 17, 2011 Agriculture Column

Howdy!!!!

It sure has been a very cold week this past week.  I am really turning into a wimp. I just don’t like it anymore.  With the way cooler weather also comes all kinds of professional development trainings or meetings.  It seems I am going to wear my poor old snow blower right out.  It is old to begin with and now is getting older each time I use it.  It runs like a motor typically does when first started but this thing bangs and backfires for an hour.  I just keep praying that it will last for another day and so far I have been lucky.  I keep telling Deb next year we will have to look for another and that has been going on for four years.  Keep on trucking snow blower.

Nutrients Are Essential Heading Into The Spring Calving Season

Requirements for pregnant and lactating cows can present quite a challenge for operators but are very important to the well-being of the cow and to reproductive efficiency. Because factors such as cow size, environment and stage of production can change daily, a cow’s nutritional needs are constantly fluctuating. Most of these changes are rather small, and long-term nutritional programs will assist in managing these subtle issues.

The required energy levels are the most variable, followed by protein, mineral and vitamin. Energy is important for all biological systems. Maintenance, weight gain, reproduction and milk production are all a product of energy utilization in the beef cow. TDN (Total Digestible Nutrients) is the term used for the measurement of energy (calories) converted to pounds or percentage of the diet. Proteins provide for functions such as enzyme systems, muscles, nerves and soft tissues. Proteins are utilized by microorganisms in the rumen to reproduce and digest carbohydrates, which aid in supplying energy to the animal. The requirement for protein increases as cow size increases. Forages that are lush or vigorously growing typically will provide sufficient ruminant protein. However, as the forage matures or the onset of feeding hay occurs due to weather conditions, the protein content will decrease, causing the need for supplementation.

Minerals also play an important role in many bodily functions. Bone mass and many of the enzyme systems, such as immunity, digestion, reproduction and milk production, utilize minerals. Mineral supplementation is very precise and difficult to manage because of the different mineral interactions. Small mineral changes can cause deficiencies.

Many of the vitamins can be readily available in growing forage. Vitamin A can be stored in the liver with protection for up to two to four months. Depending on when availability of your growing forage was depleted and supplemented with hay and calving season begins, vitamin A could become deficient and require supplementation. Requirements for vitamin A are 1,250 IU/lb of dry feed for pregnant cows and 1,770 IU/lb of dry feed for lactating cows. Cows rarely need any vitamin D supplementation because it is synthesized by beef cows exposed to sunlight or fed suncured forages. Vitamin E requirements depend on concentration of antioxidants, sulfur-containing amino acids and selenium in the diet and can be quite difficult to determine. Vitamin E is not stored in the body in large concentrations. The vitamin E requirement is estimated to be between 7 and 27 IU/lb dry diet.

Calendar

            Jan. 25-26                    Wild World of Weeds, Fargo

Jan. 27-28                    NDSU Feedlot School, Carrington

Feb 9                           Canola Days, Langdon

Feb. 14                        Commercial Fumigation, Devils Lake, IVN

            Feb 23                         Ramsey County Crop Improvement Annual meeting, KC Hall

                                                Leon Osborne, Meridian Technology, guest speaker,

                                                Commodity elections, Soybean, Pea, and Canola

            Mar. 2-3                      Eastern  Crop Scout School, Fargo

            Mar. 8                          Pesticide training, Hampden, 6 P.M.

            April 5                          Pesticide training, Devils Lake, 6 P.M.

 

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