Fall Calving, Top Differences Between Fall and Spring Calving, LRP Questions, Alternative Feedstuffs

2:15 Fall Calving

9:40 Top Differences Between Fall and Spring Calving

10:30 LRP Questions

17:25 Alternative Feedstuffs

DDG Weekly Prices Move Higher – DTN

K-State Feeder Cattle Risk Management Tool

Livestock Risk Protection Feeder Cattle

Livestock Risk Protection Insurance (LRP): How It Works for Feeder Cattle

Cows are not the primary cause of recent increase in methane

Atmospheric methane concentration has reached a record, but the exact reason has been difficult to determine. Atmospheric methane concentration increased 8 ppb per year during the 1980s, 6 ppb per year in the 1990s, then the trend was static from 2000 to 2007, but now increasing at 9 ppm per year since 2007 (Figure 1). The reason for the increased accumulation of methane in recent years is likely due to several factors. The methane budget includes both sources of emissions and sinks that remove methane from the atmosphere. The primary sources include agriculture, natural wetlands, fossil fuels, biomass burning, and other natural sources (oceans, lakes, termites). The primary sinks are chemical reactions in the atmosphere and soils. The increase in atmospheric methane concentrations means that emissions were larger than sinks, but which source has been the cause of the recent increase.

Ruminant animals account for the largest proportion of man-made methane emissions and cattle are by far the largest contributor. Estimated enteric methane emissions have increased since 2000, but the global cattle population has remained constant questioning the reason for the increased enteric methane emissions (Figure 1). Wetlands are the largest natural source of methane emissions and methane emissions from wetlands have also been increasing since 2000. Methane leakage during oil extraction is also a source of methane emissions into the atmosphere and was thought to possibly be the cause of increased methane due to the increase in shale oil extraction.

Based on the change in radio isotope ratio of atmospheric methane, the increase in methane emissions is likely from microbial sources which rules out fossil fuel extraction leaving enteric and wetland methane emissions. The largest increases in atmospheric methane coincide with the largest increases in global temperature. The largest methane growth rates (> 10 ppb) occurred in the tropics and subtropics through 2014 to 2017, which had average temperatures > 1°C warmer than the 1880-1909 baseline. Methane emissions from wetlands increase with increasing temperature because of increased microbial activity, but microbes in the rumen of cattle are at a constant 38°C such that global temperature would not be affecting microbial activity in the rumen. Additionally, the largest increases in methane emissions have come from the tropical and subtropical latitudes, where increased precipitation, flooding and temperature coincided between 2014 – 2017. Wetlands are the largest global source of methane emissions (Figure 2) and are a major driver of atmospheric methane especially with increasing global temperature.

Removal of methane through chemical reactions in the atmosphere can have a dramatic effect on methane lifetime. Hydroxyl, which is the chemical with which methane reacts in the atmosphere, concentrations in the atmosphere increased 10% between the late 1990s and mid-2000s coinciding with the plateau in methane concentrations from 2000 to 2007. But hydroxyl concentrations have decreased approximately 10% from mid-2000s to 2014 coinciding with the renewed increase in atmospheric methane concentrations.

The methane budget is not as simple as once thought and changes in relative amounts of sources and sinks can readily change the atmospheric concentration. Enteric emissions from ruminants is not always the primary driver and is not the largest emissions source. As global temperatures increase, wetland emissions may become a larger proportion of global methane emissions.

Figure 1. Global atmospheric methane (NOAA) and hydroxyl (Rigby et al., 2017) concentration, methane emissions from enteric fermentation (FAO) and wetlands (Zhang et al. 2017), and cattle population (USDA).
Figure 2. Contribution to global methane emissions by various sources. Adapted from the Environmental Change Institute, University of Oxford.

Stump the Expert, Low Stress Weaning, Tips for Managing Low Stress Weaning, Livestock Risk Protection Tools

Welcome to BCI Cattle Chat!  Please click on any links below to be taken to sources mentioned in the podcast. Keep an eye out for news regarding the podcast on Facebook and Twitter.

3:30 Stump the Expert

9:20 Low Stress Weaning

18:04 Tips for Managing Low Stress Weaning

18:40 Livestock Risk Protection Tools

Visit RMA’s website to see the LRP-Feeder Cattle program’s coverage prices, rates, actual ending values, and per hundredweight insurance cost on – https://www.rma.usda.gov/en/Information-Tools

For more on BCI Cattle Chat, follow us on Twitter @The_BCI, and check out our website, ksubci.org. If you have any comments/questions/topic ideas, please send them to bci@ksu.edu. Don’t forget if you enjoy the show, please go give us a rating!

Stump the Expert, Pre-Conditioning, Top Preventative Health Tips for Pre-Conditioning, BQA Tips for Weaning, Early Preg-Checks

Welcome to BCI Cattle Chat!  Please click on any links below to be taken to sources mentioned in the podcast. Keep an eye out for news regarding the podcast on Facebook and Twitter.

3:45 Stump the Expert

8:45 Pre-Conditioning

16:40 Top Preventative Health Tips for Pre-Conditioning

17:25 BQA Tips for Weaning

21:05 Early Preg-Checks

For more on BCI Cattle Chat, follow us on Twitter @The_BCI, and check out our website, ksubci.org. If you have any comments/questions/topic ideas, please send them to bci@ksu.edu. Don’t forget if you enjoy the show, please go give us a rating!

Designing a Trichomoniasis (Trich) control plan to meet the specific needs of your ranch using Trich CONSULT

Bob L. Larson, DVM, PhD

Trichomoniasis (Trich) is a highly contagious disease that can cause cows to abort an early pregnancy when the organism is passed from infected bulls to cows during mating. This disease is very important to the cattle industry because infected herds experience very severe losses – commonly up to a 30% to 50% reduction in the number of cows calving. Infected cows and bulls appear healthy and it’s not until a high percentage of the cows are open at preg-check that Trich is suspected. While cows are usually able to clear the infection within a few months, females are occasionally longer-term carriers; and once bulls become infected, they will most likely remain a carrier for the rest of their life.

Trich has been reported in almost every state in the U.S., but some areas of the country have a much higher risk of coming into contact with a Trich-infected breeding animal than others. The movement of Trich into a non-infected herd is through infected bulls or cows. Any time a lot of cattle are moving from one part of the country to another, such as during a drought situation, the risk of spreading Trich to areas that did not previously have a lot of cases, is very possible.

Many states have imposed regulations requiring testing for Trich for bulls moved into their states, and some states have testing requirements for bulls moving within the state, and a few states have regulations about the movement of open cows. Rules about which animals must be tested for Trich before being allowed to cross the border vary between states, therefore you must contact the state where you are shipping cattle to in order to meet those regulations. In addition, in many states Trich is a reportable disease, therefore if Trich is diagnosed in a herd, the state veterinarian must be notified who will then start an investigation and control procedure.

Even though Trich is a very important disease to the U.S. cattle industry, most herds are not infected and many herds have a fairly low risk of becoming infected. Therefore, a Trich-control plan for a non-infected herd would be very different than a plan for an infected herd. For non-infected herds, the goal is to set up a system where it’s unlikely that Trich will be introduced from other herds. If you have a herd that is Trich-infected, an aggressive plan to test the bulls and to carefully manage the breeding season must start immediately after diagnosis is confirmed.

Trich CONSULT was designed for the beef industry as a free, user-friendly, online tool that helps cow-calf producers and veterinarians to minimize the effects of Trich in a herd that has been infected, and it can be used to design a system to keep Trich out of uninfected herd. The plans that are developed are customized to each herd’s specific situation through a series of questions and responses that is designed to mimic a conversation with a Trich expert. I’m a firm believer that one-size-fits-all Trich plans will not work. It takes a knowledgeable veterinarian who knows not only trichomoniasis but also the ranchers they are working with and their community to design the best individualized control and surveillance plans. The question and answer format of Trich CONSULT helps the cattle producer and veterinarian to cover all the important considerations when designing an eradication or prevention program.

Trich CONSULT is set up to provide different answers and follow-up questions based on previous answers. There are 6 to 10 questions in Trich CONSULT which should take about 10 to 20 minutes to complete, depending on each individual producer’s answers.  If you want more information about a particular question or answer, you can click on a “More Information icon” and get helpful feedback to help you make a decision that best fits your herd and management.

The first question in Trich CONSULT is, “Do you have trichomoniasis (Trich) in your herd?  The follow-up questions will be very different depending on whether you answer “yes” or “no” to that initial question. If you are not sure about your infection status, you will be asked several questions to determine whether or not it is likely that you have Trich in your herd. If you already have Trich in your herd, you will be asked whether you can do certain testing and management actions to find and remove potentially infected bulls and cows. Many of the suggested actions are very strongly recommended, while others are preferred, but if you are willing to accept some risk of continued Trich exposure the tool will provide advice about how to minimize those risks and establish a strategy to quickly respond if your risky decision resulted in negative consequences.

If you do not currently have Trich in your herd and want to create a cost-effective strategy to maintain your Trich-free status, you will be asked if you can implement several different barriers to allowing an infected cow or bull to come into contact with your herd. Again, some actions are very strongly recommended while other actions are preferred in order to have the lowest risk of disease; but if you choose to continue some actions that have slight to moderate risk of allowing Trich into the herd, advice is provided in Trich CONSULT to manage your retained risk.

After you have completed all the questions in Trich CONSULT, a report will be generated that includes the answers to all the questions that you just completed and a summary of the strengths and limitations of your agreed-upon strategy.

Trich CONSULT is located at www.trichconsult.org  and was funded by the Kansas StateVeterinary Diagnostic Laboratory, the Coleman Foundation for Food Animal Production Medicine at Kansas State University, and by USDA grant 2014-09684. The authors include veterinarians from Kansas State University, the University of Nebraska, Boehringer Ingleheim Vetmedica, Inc., the University of California at Davis, the University of Calgary, the University of Florida, and Auburn University.