The Faculty in Reproductive Biology at Illinois

Robert V. Knox

Animal Sciences
Ph.D. University of Nebraska

To e-mail Dr. Knox use: rknox@uiuc.edu

 

 

 

 

 

 

 

My research program has focused on methodology for improving induction of estrus and fertility in replacement gilts. We are also characterizing time of ovulation in sows and optimal breeding times and are investigating effectiveness of breeding procedures when using A.I.. The methods under investigation include boar exposure and frequency of boar contact for improving sperm transport, conception rates, and litter size. Another area of our research is evaluation of real-time ultrasound for its efficiency in the early diagnosis of pregnant and non-pregnant females after breeding as a method to assess embryonic loss and failure to farrow in swine. We are also investigating the use of exogenous gonadotropic hormones as a method that for improving the efficiency and quality of eggs that are produced for use with the technologies of embryo transfer, in vitro embryo production, and transgenic swine.

I hold an extension-research appointment in swine reproductive physiology in the Department of Animal Sciences. My extension program focuses on providing the newest information to swine producers through extension publications, workshops, seminars, farm visits and internet based resources. The extension topic areas covered include gilt and sow management, boar management, semen collection, semen extension and storage, A.I., real-time ultrasound, pregnancy diagnosis, farrowing management, reproductive records, and new reproductive biotechnologies.

Selected Publications:

Knox, R. V., Zhang, Z. and Anthony, R.V. 1994. Identification of relaxin gene expression and protein immunolocalization in the uterine endometrium during early pregnancy in the pig. Endocrinology, 135: 2517-2525.

Knox, R. V. and G. C. Althouse. 1999. Visualizing the reproductive tract of the female pig using real-time ultrasonography. Swine Health and Production. 7:207-215.

Knox, R. V. and K. W. Tudor. 1999. Influence of norgestomet in combination with gonadotropins on induction of estrus and ovulation in prepubertal gilts. J. Anim. Sci. 77:1348-1352.

Knox, R. V., S. Rodruiguez-Zas, K. W. Tudor, and J. A. Robb. 2000. Effect of subcutaneous or intramuscular administration of PG600 on estrus and ovulatory responses in prepubertal gilts. J.Anim. Sci. 78:1732-1737.

Knox, R. V., S. L. Rodriguez-Zas., G. M. Miller, K. L. Willenburg, and J. A. Robb. 2001. Administration of P.G. 600 to sows at weaning and the time of ovulation as determined by transrectal ultrasound. J. Anim. Sci. 79:796-802.

Knox, R.V., S. L. Rodriguez-Zas. 2001. Factors influencing estrus and ovulation in weaned sows as determined by transrectal ultrasound. (Accepted, J. Anim. Sci.)

 

Last updated Aug. 25, 2001

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