Progress 07/01/11 to 06/30/16
Outputs
Target Audience:The Target audience for this report are beef cattle producers across the State of Wyoming and the western region, as well as other researchers who are investigating the impacts of feed efficiency on heifer development. Changes/Problems:In our proposal, we wanted to investigate the long-term effects of RFI selection. However, because of herd size constraints and management complexities that would have been economically impossible to achieve, we chose to focus only on the impacts of RFI selection on the first generation offspring, both heifers and steers. However, the data is still very much applicable to livestock producers selecting bulls based on RFI. What opportunities for training and professional development has the project provided?These data have been shared at multiple conferences, including but not limited to the Range Beef Cow Symposium, The Range Livestock Workshop, Angus Field Days, and multiple AI schools. Many of the attendees at these meetings are professionals in extension, industry, and research, in addition to producers. How have the results been disseminated to communities of interest?
Nothing Reported
What do you plan to do during the next reporting period to accomplish the goals?
Nothing Reported
Impacts
What was accomplished under these goals?
We were able to obtain data to measure all objectives. Objectives 2 and 5 are still currently being evaluated. The other data obtained is currently in the process of being published. Addtionally, multiple talks across the region have been given at various meetings and confrences. Future symposia are planned with the focal point on feed efficiency and how this impacts management decisions, including sire selection and heifer development.
Publications
- Type:
Other
Status:
Accepted
Year Published:
2016
Citation:
Lake, S. L. and C. L. Marshall. Effects of feed efficiency ranking and indexing on reproductive performance in growing beef heifers. AES Field Day Report
- Type:
Journal Articles
Status:
Other
Year Published:
2016
Citation:
Lake, S. L. and C. L. Marshall. Effects of feed efficiency ranking and indexing on reproductive performance in growing beef heifers. Submitted JAS
- Type:
Other
Status:
Other
Year Published:
2016
Citation:
Lake, S. L. and C. L. Marshall. Effects of feed efficiency ranking and indexing on reproductive performance in growing beef heifers.
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Progress 10/01/14 to 09/30/15
Outputs
Target Audience:During the last reporting year, talks have been given at 3 beef cattle artificial insemination schools across the state of wyoming. Additionally, a talk was given at the Range Beef Tours, in Kanab and St. George, Utah. Although final results from this study have not been compiled, the idea behind the research and preliminary results were presented. These audiences were comprised of primarily beef cattle producers. The total attendance of these meeetings was over 300 producers. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?This project has helped train 2 graduate students. One student graduated and is working in the Extension service and the other student will graduate in 2017. How have the results been disseminated to communities of interest?Preliminary results have been given over the course of the year at seminars and talks. Popular press articles have been written about the nature of the study. The results will be disseminated in the upcoming year in area extension programs, scientific journals, and popular press type articles. Additionally, results will likely be presented at experiment station field days and in bulletins. Furthermore, regional program meetings (Range Beef Cow Symposium) and state beef associations will be likely venues for presentations. What do you plan to do during the next reporting period to accomplish the goals?The next reporting period is the last one. We will be compiling all data and presenting to outlets as described above.
Impacts
What was accomplished under these goals?
For the current reporting year, 80 heifers have been tested on a GrowSafe system to measure feed efficiency. Heifers were synchronized and bred via artificial insemination. Results of the years study were added to the prior years data base. 80 steer calves were fed to finish and feed efficiency was measured. Carcass data was obtained at time of slaughter. Data from these studies will help accomplish the goals listed. Preliminary results would suggest that selecting for both growth and feed effiency has an impact on reproductive traits in beef cattle. However, the project is not completed and is in the last year. The results will be compiled and published in the upcoming reporting year for both the heifer data and the steer data.
Publications
- Type:
Other
Status:
Published
Year Published:
2015
Citation:
S. Lake. and C. Marshall. 2015. Effect of feed efficiency ranking and indexing on reproductive performance in growingbeef heifers. 2015 UW AES Field Days Bulletin Report.
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Progress 10/01/13 to 09/30/14
Outputs
Target Audience:The target audience are the beef cattle producers of Wyoming, as well as, producers across the region. Additionally, audiences include scientific communities that may be interested in our applied work to help answer or ask questions of a more basic nature. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?Although we are still gathering data, the current results have been disseminated in field reports, scientific presentations, and producer meetings. What do you plan to do during the next reporting period to accomplish the goals?We plan to continue to collect and anlyze data from this project. It is anticipated that during the next year of the project, scientific manuscripts will be written and presentations will be given at both scientific and producer forums.
Impacts
What was accomplished under these goals?
All of the goals listed are currently being investigated. There has been 2 years worth of data collected, and several publications and presentations have been given off of the data. It is anticipated that several peer reviewed scientific journal articles and numerous producer publications will be developed this coming year.
Publications
- Type:
Other
Status:
Accepted
Year Published:
2015
Citation:
Lake, S. L. and C. Marshall. 2015. Effects of Feed Efficiency Ranking and Indexing on Reproductive Performance in Growing Beef Heifers. Wyoming Agricultural Experiment Station Field Day Bulletin.
- Type:
Conference Papers and Presentations
Status:
Accepted
Year Published:
2015
Citation:
Lake, S. L. and C. Marshall. 2015. Effects of Feed Efficiency Ranking and Indexing on Reproductive Performance in Growing Beef Heifers. American Society of Animal Society.
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Progress 01/01/13 to 09/30/13
Outputs
Target Audience: This project is just finishing the first full collection period. Results are currently being analyze and will be posted on the next reporting cycle. Changes/Problems:
Nothing Reported
What opportunities for training and professional development has the project provided?
Nothing Reported
How have the results been disseminated to communities of interest?
Nothing Reported
What do you plan to do during the next reporting period to accomplish the goals? During the next reporting period data will be analyzed and disseminated through extension workshops, livestock publications, and peer reviewed journals.
Impacts
What was accomplished under these goals?
The first full cycle of animals has gone through this project. The data are currently being analyzed and will be distributed throughout the next reporting period.
Publications
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Progress 01/01/12 to 12/31/12
Outputs
OUTPUTS: The first calf crop will enter the feedlot and GrowSafe system this spring and the first group of replacement heifers will be bred this spring. PARTICIPANTS: S. Lake, K. Cammack, A. Meyer: assistant professors in UW Animal Science Department. S. Paisley: associate professor, UW Extension beef specialist. Support staff at Research & Extension Centers. TARGET AUDIENCES: Beef producers, Extension professionals, and other researchers. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.
Impacts
Because this is the first year of a multi-year study, there are no outcomes at this point. Feed efficiency data and heifer breed data will be collected this spring. Carcass data from the feedlot steers will be available this summer.
Publications
- No publications reported this period
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