Ruth Braw-Tal, Ph.D.

Name:	Ruth Braw-Tal, Ph.D. (Retiree)
Units:	Animal Science, Department of Ruminant Science
Research Interests / Job description

Tel:	08-9484434
Cell:	050-6220134
Fax:	08-9475075
Email:	brawtal@agri.huji.ac.il
Office location:	Rehovot
Address:	Agricultural Research Organization The Volcani Center Institute of Animal Science POBox 6 Bet-Dagan 50250, Israel
senior scientist

Research Interests / Job description
	Reproductive endocrinology Ovarian physiology


RESEARCH INTERESTS Ovarian physiology of domestic ruminants. Fertility of high-yield dairy cows. Role of insulin/IGF-I in resumption of ovarian cyclicity post partum in high-yield dairy cows. Characterization and treatment of ovarian cysts in dairy cows. Effect of Environmental Endocrine Disruptors (EEDs) on bovine follicular function, oocyte quality and preimplantation embryo development The steroidogenic effect of single-chain bovine LH and FSH analogs in cultured bovine follicular cells. Ovarian activity of broilers and layers hens. RECENT PUBLICATIONS **Braw-Tal, R. (2001). The initiation of follicle growth: the oocyte or the somatic cells? Mol. Cell. Endocrinol. 187, 11-18. Roth, Z., Arav, A., Braw-Tal, R*., Bor, A. & Wolfenson, D. (2002). Effect of treatment with Follicle-Stimulating Hormone or Bovine Somatropin on the quality of oocytes aspirated in the autumn from previously heat-stresses cows. J. Dairy Sci. 85, 1398-1405.* Kaim, M., Bloch, A., Wolfenson, D., Braw-Tal, R., Rosenberg, M., Vote, H. & Folman, Y. (2003). Effects of GnRH Administered to Cows at the Onset of Estrus on Timing of Ovulation, Endocrine Responses, and Conception. J. Dairy Sci. 86, 2012-2021. Yosefi S., Braw-Tal, R*. & Bar, A. (2003). Intestinal and eggshell calbindin, and bone ash of laying hens as influenced by age and molting. Com. Biochem. Physiol. Part A* 136, 673-682. Wolfenson, D., Inbar,G., Roth, Z., Kaim, M., Bloch, A. & Braw-Tal, R.** (2004). Follicular dynamics and concentrations of steroids and gonadotropins in lactating cows and nulliparous heifers. Theriogenology 62, 1042-1055. Braw-Tal, R., Yossefi, S., Pen, S., Shinder, D. & Bar, A. (2004). Hormonal changes associated with aging and induced molting of domestic hens. Brit. Poult. Sci. 45, 815-822. Roth, Z., Bor, A., Braw-Tal, R. & Wolfenson, D. (2004). Carry-over effect of summer thermal stress on characteristics of the preovulatory follicle in lactating cows. J. Thermal Biol. 29, 681-685. Braw-Tal, R. & Roth, Z. (2005). Gene expression for LH receptor, 17a-hydroxylase and StAR in the theca interna of preantral and early antral follicles in the bovine ovary. Reproduction 129, 453-461. Telfel, E.E., Gosden, R.G., Byskov, A.G., Spears, N., Albertini, D., Andersen, C.Y., Anderson, A., Braw-Tal, R., Clarke, H., Gougeon, A., McLaughlin, E., McLaren, A., McNatty, K., Schatten, G., Silber, S, Tsafriri, A. (2005). On regenerating the ovary and generating controversy. Cell 122, 821-822. Nakav, S., Dantes, A., Pen, S., Chadna-Mohanty, P., Braw-Tal, R., Amsterdam, A., Grotjan, H.E. & Ben-Menahem, D. (2006). Homologues and heterologues carboxyl terminal peptide (CTP) linker-sequences enhance the secretion of bioactive single-chain bovine LH analogs. Experimental and Clinical Endocrinology & Diabetes 114, 95-104. Braw-Tal, R., Pen, S., Grinberg, M., Nakav, S. & Ben-Menachem, D. (2006). The steroidogenic effect of single-chain bovine LH analogs in cultured bovine follicular cells. Mol. Cell. Endocr. 252, 136-141. Bloch, A., Folman, Y., Kaim, M., Roth, Z., Braw-Tal, R., & Wolfenson, D. (2006). Endocrine alterations associated with extended time interval between estrus and ovulation in high-yield dairy cows. J. Dairy Sci. 89, 4694-4702. Grinberg, M., Nakav, S., Pen, S., Dantes, A., Braw-Tal, R., Amsterdam, A. & Ben-Menahem, D. (2008). The configuration of the alpha and beta subunit domains in single-chain bovine LH analogs influences the secretion and steroidogenic response. Mol. Cell. Endocr. 283, 83-95 Lavon, Y. , Leitner, G., Goshen, T., Braw-Tal, R., Jacoby, S. & Wolfenson, D. (2008). Exposure to endotoxin during estrus alters the timing of ovulation and hormonal concentrations in cows. Theriogenology 70, 956-967. Braw-Tal, R., Pen, S. & Roth, Z. (2009). Ovarian cysts in high-yielding dairy cows. Theriogenology 72, 690-698. Braw-Tal, R. (2010). Endocrine Disruptors and timing of human exposure. Pediatric Endocrinology Reviews (PER) 8, 41-46. ()- student under my guidance CURRENT PROJECTS Risk associated with feeding dairy cows crops exposed to irrigation with wastewater and sludge application. Environmental Endocrine Disruptors in high-yield dairy cows and their possible effect on bovine reproductive health. Ovarian cysts in dairy cows: hormonal metabolic profiles and suggestions for preventing treatment.

Updated on: 02/02/15 15:32