In my April 2016 newsletter article “Managing Mycotoxins In Feedstuffs: Mycotoxin Binder Strategies”, I explained the significant negative effects mycotoxins have on livestock health and production. That article pointed out the previous challenges of inaccurate lab analysis of mycotoxins, how to interpret a lab analysis to determine a management plan for a given level of exposure and the subsequent limitations of strategies available at the time. This article can be found on our website under the “Articles” tab, under the sub-category of “Inoculant.”
Rolling herd average or milk production per cow are numbers commonly referred to when discussing the success of a dairy farm. Milk production is an easy number to identify but the actual profitability of an operation is a much more complex topic. A dairy herd’s income is simple to see by reading the milk check. Determining the real profit of the herd cannot be so easily evaluated as it takes time to assess the expenses involved in making the milk and running the operation.
Stress is defined as a state of strain from adverse or demanding conditions. Livestock can be stressed by many different factors: weaning, pen movement, dehorning, vaccinating, shipping, lactation, weather, flies, etc. Some of these stressors can be reduced by good management, but not all stressors can be eliminated. The immune system of an animal has the ability to resist infection or disease. However, when animals are stressed, they are more vulnerable to disease due to decreased immune function.
Simply put, heat stress occurs when a bird’s core temperature is higher than its thermoneutral zone (Figure 1). A thermoneutral zone is a temperature range in which an animal does not use any additional energy to maintain its normal core body temperature. Heat stress is a result of a negative balance between the energy transfer from the bird’s body to its environment and the amount of heat energy produced by the bird. This imbalance can be caused by multiple factors such as ambient temperature, humidity, air movement, metabolism rate and thermal irradiation. Effects can range from mild distress to death.
Drafts and pre-weaned calves: Rarely is a topic so misunderstood. Many calf raisers are uncomfortable with the topic of drafts on calves, regardless of the outside temperature. Most people believe that drafts are to be avoided at all costs. I once heard of a veterinarian who would spark a lighter in a calf pen and if the flame flickered, even the slightest bit, would declare the presence of a dangerous draft. Contrary to popular belief, however, drafts on pre-weaned calves are not always a bad thing. In fact, in certain situations, they can even be beneficial.
Dr. Ryan Leiterman holds degrees in both Agricultural Engineering and Veterinary Medicine.
By Dr. Ryan Leiterman and Lorrie Meister, CVT
On Oct. 11, 1826, Theodore Jones of London, England, received a patent for what he called “wire wheels.” Jones found if he added wires, or what we now call spokes, to a circular rim, the wheel could bear greater stress while maintaining its round shape. The addition of the spokes helped the rim distribute the stress evenly throughout the wheel. This strength is dependent on all the spokes working together; if one or more spokes are weak or broken, the
rim may collapse. In the same way spokes help keep a wheel round, calves have six main “spokes” that help keep them healthy when subject to stress, which are:
Crystal Creek® is pleased to announce the expansion of our current warehouse and be a part of the dynamic growth taking place in NW Wisconsin. This construction project has provided over 100 jobs for skilled laborers and tradesman in our area.
The estimated completion date of September 2016 will allow us to consolidate all of our inventory under one roof. This increased efficiency will help us better serve our growing customer base. Click on the warehouse image to view a video of the construction progress or choose this link at: https://www.youtube.com/watch?v=YLGSdQTmOUM
Crystal Creek® would like to thank all of our loyal customers who have helped drive our company forward for the last 19 years.