Prospective ultrasonographic and endocrine predictors of spermatogenic onset in ram lambs.

[1]  A. Hahnel,et al.  Retinoic acid treatment alters germ cell heterogeneity and testicular echotexture in prepubescent ram lambs. , 2015, Reproduction, fertility, and development.

[2]  D. Melzer,et al.  Events in Early Life are Associated with Female Reproductive Ageing: A UK Biobank Study , 2016, Scientific Reports.

[3]  J. Perry,et al.  Puberty timing associated with diabetes, cardiovascular disease and also diverse health outcomes in men and women: the UK Biobank study , 2015, Scientific Reports.

[4]  A. Hahnel,et al.  Correlations among ultrasonographic and microscopic characteristics of prepubescent ram lamb testes , 2014, Experimental biology and medicine.

[5]  A. Mirshahi,et al.  Preliminary assessment of the quantitative relationships between testicular tissue composition and ultrasonographic image attributes in the ram. , 2013, Veterinary journal.

[6]  A. Hahnel,et al.  Relationships of serum thyroid hormones and follicle-stimulating hormone concentrations to Sertoli cell differentiation during the first wave of spermatogenesis in euthyroid ram lambs. , 2013, Reproductive biology.

[7]  A. Hahnel,et al.  Relationships of ultrasonographic and magnetic resonance image attributes to the histomorphology of ram testes. , 2012, Reproductive biology.

[8]  J. Raeside,et al.  Suitability of epididymal and testicular ultrasonography and computerized image analysis for assessment of current and future semen quality in the ram , 2012, Experimental biology and medicine.

[9]  J. Polkowska,et al.  Influence of gonadal hormones on endocrine activity of gonadotroph cells in the adenohypophysis of male lambs during the postnatal transition to puberty. , 2010, Animal reproduction science.

[10]  A. Evans,et al.  Sexual maturation in the bull. , 2008, Reproduction in domestic animals = Zuchthygiene.

[11]  E. González-Padilla,et al.  Stereological study of postnatal testicular development in Blackbelly sheep. , 2007, Theriogenology.

[12]  S. C. Mendis-Handagama,et al.  Leydig cells, thyroid hormones and steroidogenesis. , 2005, Indian journal of experimental biology.

[13]  Jing Cheng,et al.  FSH and testosterone signaling in Sertoli cells. , 2005, Reproduction.

[14]  N. Rawlings,et al.  The relationship between secretory patterns of gonadotrophic hormones and the attainment of puberty in bull and heifer calves born early or late during the spring calving season. , 2005, Animal reproduction science.

[15]  E. Bagu,et al.  Effects of treatment with LH or FSH from 4 to 8 weeks of age on the attainment of puberty in bull calves. , 2004, Theriogenology.

[16]  R. Sharpe,et al.  Proliferation and functional maturation of Sertoli cells, and their relevance to disorders of testis function in adulthood. , 2003, Reproduction.

[17]  J. Higgins,et al.  Ultrasonography of the Scrotum , 2002, Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine.

[18]  R. Pierson,et al.  Pattern of gonadotropin secretion and ultrasonographic evaluation of developmental changes in the testis of early and late maturing bull calves. , 2000, Theriogenology.

[19]  M. Dubois,et al.  Ram lambs need FSH for normal testicular growth, Sertoli cell numbers and onset of spermatogenesis. , 1998, Reproduction, nutrition, development.

[20]  A. Honaramooz,et al.  Effects of treatment with LH releasing hormone before the early increase in LH secretion on endocrine and reproductive development in bull calves. , 1997, Journal of reproduction and fertility.

[21]  R. Pierson,et al.  Ultrasonography of the developing reproductive tract in ram lambs: effects of a GnRH agonist. , 1997, Theriogenology.

[22]  K. Wrobel The Postnatal Development of the Bovine Leydig Cell Population , 1990 .

[23]  D. Lunstra,et al.  Repetitive testicular biopsy in the ram during pubertal development. , 1988, Theriogenology.