Source: WEST VIRGINIA UNIVERSITY submitted to NRP
SWINE REPRODUCTIVE PHYSIOLOGY
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
COMPLETE
Funding Source
Reporting Frequency
Annual
Accession No.
0222575
Grant No.
(N/A)
Cumulative Award Amt.
(N/A)
Proposal No.
(N/A)
Multistate No.
NCERA-_OLD57
Project Start Date
Mar 16, 2010
Project End Date
Sep 30, 2014
Grant Year
(N/A)
Program Code
[(N/A)]- (N/A)
Recipient Organization
WEST VIRGINIA UNIVERSITY
886 CHESTNUT RIDGE RD RM 202
MORGANTOWN,WV 26505-2742
Performing Department
Animal & Veterinary Science
Non Technical Summary
Lifetime growth and performance are influenced by the growth trajectory of a number of tissues that initiate their growth and development in utero. Variation exists in the relative function of placentae throughout a litter and likely limits postnatal growth and development. A better understanding of how growth and development may be limited in utero by the relatively crowded uterine environments which now exist in the swine industry and/or the impact of high environmental temperatures on nutrient delivery to the uterus during very warm summer months should lead to management methods/decisions to improve the efficiency of swine production and thereby improve the efficiency of high quality animal protein that will be critical to future global food needs.
Animal Health Component
(N/A)
Research Effort Categories
Basic
(N/A)
Applied
(N/A)
Developmental
(N/A)
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
3013510102050%
3053510102050%
Goals / Objectives
Improve reproductive performance of boars via coordinated and collaborative research on sperm-oocyte and sperm-reproductive tract interaction, genetic and epigenetic regulation of sperm production, testis size and male fertility, novel approaches to semen evaluation, cryopreservation of sperm, specific ovulation induction procedures to time artificial insemination for use with frozen semen, and sire dependent effects on embryo-fetal development. Improve reproductive performance of sows and gilts via coordinated and collaborative research on endocrine control of female reproduction, development of protocols for timing of ovulation and insemination, basic mechanisms of protein secretion, ovarian folliculogenesis, pubertal development, uterine morphogenesis, genetic regulation of maternal-fetal-placental interaction, conceptus growth and development, embryo-fetal survival, and potential effects of endocrine disruptors. Provide unique mechanisms for open scientific exchange and dialogue to advance research initiatives of participating scientists, and exchange of information and techniques that enhance teaching and technology through the cooperative extension service, higher education and the swine industry. Conduct biennial symposia on current topics that bring together university educators, extension scientists, reproductive physiologists and swine industry representatives. Symposium proceedings will be made available via CD and the NCERA57 website. Continue the development of a integrated extension/teaching/research grant proposal to the successor of the USDA-NRI reproduction program. This will investigate the interaction of the environment on swine reproduction, develop an on-line swine reproduction teaching site with modules on different aspects of reproduction, and develop internships as part of the educational process to get students into production settings.
Project Methods
Our component of the project will be to conduct basic, intensive studies of aspects of conceptus growth and development and to determine impacts of the the relative efficiency of the placenta on growth and development of offspring. We plan to accomplish this by a mix of chronic instrumentation of fetoplacental units to determine nutrient flux accrossed the placenta and the impact of placental efficiency on the post-natal growth performance of pigs. Our hope is then to assess the impacts of season (hot/summer vs cool/winter) on the measures of placental function and fetal/pig growth and development. Additionally, we anticipate applying treatments that either provide a roomy or crowded uterine environment on relative placental function.

Progress 03/16/10 to 09/30/14

Outputs
Target Audience: Is the community in the area of reproductive physiology in swine, and through them those that make use of the publication of primary data to make applied changes in how the industry manages reproduction in the sow and boar. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided? Every other year we dedicate half of a day to conducting a symposium directed at producers (mostly the focal group of early adopters and integrator decision makers). We have had very good attendance for the symposia during this project period and members of the project usually contribute to the symposia. How have the results been disseminated to communities of interest? Presentation of data at national meetings, peer-reviewed publications and producer symposia every other year. 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 gathered annually and spent 1.5 days exchange and discussing the research activities and success at each of the participating stations. In addition we planned and held three producer symposia in conjunction with every other annual meeting.

Publications


    Progress 01/01/13 to 09/30/13

    Outputs
    Target Audience: community in the area of reproductive physiology in swine, and through them those that make use of the publication of primary data. We did discuss a theme for next years meeting which will contain a symposium for producers and the allied industry. Changes/Problems: Nothing Reported What opportunities for training and professional development has the project provided? Every other year we dedicate half of a day to conducting a symposium directed at producers (mostly the focal group of early adopters and integrator decision makers). We have had very good attendance for the symposia during this project period and members of the project usually contribute to the symposia. How have the results been disseminated to communities of interest? Presentation of data at national meetings, peer-reviewed publications and producer symposia every other year. What do you plan to do during the next reporting period to accomplish the goals? We will have another annual meeting in 2014 and that will be in conjunction with a symposium.

    Impacts
    What was accomplished under these goals? We gathered and spent 1.5 days exchange and discussing the research activities and success at each of the participating stations. In addition we planned the skeleton theme of a producer symposium in conjunction with our next annual meeting and assigned a committee to coordinate that activity.

    Publications


      Progress 01/01/12 to 12/31/12

      Outputs
      OUTPUTS: This year we had a symposium at our annual meeting to discuss the progress made in both utilization of frozen semen and post cervical insemination in the swine industry. We had a significant number of industry representatives attend the symposium in person, as well as a significant number that attended virtually online. We also continued to discuss the possibility of submitting a project grant to assess the role of the male and the female in seasonal infertility. The USDA/MARC group has been able to collect some prelimanary data using frozen semen and we hope to be competitive as the industry would benefit from frozen semen, especially if there is a seasonal component that can be attributed to the boar. PARTICIPANTS: Representatives of swine producers both in a live audience and online. TARGET AUDIENCES: Swine producers. PROJECT MODIFICATIONS: Not relevant to this project.

      Impacts
      Our conduct of an industry symposium every other year clearly has impact to swine producers. The attendance at this years symposium, both in person and online, clearly demonstrate the percieved value and therefore impact to the clientele we serve.

      Publications

      • No publications reported this period


      Progress 01/01/11 to 12/31/11

      Outputs
      OUTPUTS: This is a multistate project on swine reproductive physiology. During this year we hosted a symposium for swine producers and industry professionals. In addition, our group has been collecting data in collaboration with an outside group at NDSU to understand how exercise during gestation may alter blood flow to the uterus or placenta and how that alteration may impact nutrient transport by the placenta. A host of laboratory analyses have been conducted and are awaiting analyses PARTICIPANTS: At our annual meeting we organized a symposium hosted by the Maschoffs for swine producers and industry professionals. Matthew E. Wilson, PI Kimberly A. Vonnahme, collaborator Tiffany A. Wilmoth, graduate student TARGET AUDIENCES: Not relevant to this project. PROJECT MODIFICATIONS: Not relevant to this project.

      Impacts
      To date we have analyzed a number of samples, but still need to collect data about the relative vascularity of the placental/endometrial interface so that those data can be submitted for analysis.

      Publications

      • No publications reported this period


      Progress 01/01/10 to 12/31/10

      Outputs
      OUTPUTS: This is a multistate project on swine reproductive physiology. During this year we hosted a symposium for swine producers and industry professionals. In addition, our group has been collecting data in collaboration with an outside group at NDSU to understand how exercise during gestation may alter blood flow to the uterus or placenta and how that alteration may impact nutrient transport by the placenta. A host of laboratory analyses have been conducted and are awaiting analyses. PARTICIPANTS: At our annual meeting we organized a symposium hosted by the Maschoffs for swine producers and industry professionals. Matthew E. Wilson, PI Kimberly A. Vonnahme, collaborator Tiffany A. Wilmoth, graduate student TARGET AUDIENCES: Not relevant to this project. PROJECT MODIFICATIONS: Not relevant to this project.

      Impacts
      To date we have analyzed a number of samples, but still need to collect data about the relative vascularity of the placental/endometrial interface so that those data can be submitted for analysis.

      Publications

      • No publications reported this period