Management Options for the Aged Breeding Stallion with Declining Testicular Function

Varner, 1991, Management of the breeding stallion, 97 Love, 1991, Evaluation of measures taken by ultrasonography and caliper to estimate testicular volume and predict daily sperm output in the stallion, J Reprod Fertil Suppl, 44, 99 Love, 1992, Ultrasonographic evaluation of the testis, epididymis, and spermatic cord of the stallion, Vet Clin North Am Equine Pract, 8, 167, 10.1016/S0749-0739(17)30473-X Blanchard, 2001, Low daily sperm output per ml of testis as a diagnostic criteria for testicular degeneration in stallions, J Equine Vet Sci, 21, 33, 10.1016/S0737-0806(01)70228-6 Varner, 2008, Semen processing for the subfertile stallion, J Equine Vet Sci, 28, 677, 10.1016/j.jevs.2008.10.012 Johnson, 1983, Age-related and seasonal variation in the Sertoli cell population, daily sperm production and serum concentration of follicle-stimulating hormone, luteinizing hormone and testosterone in stallions, Biol Reprod, 29, 777, 10.1095/biolreprod29.3.777 Blanchard, 1997, Increased germ cell degeneration and reduced germ cell: Sertoli cell ratio in stallions with low sperm production, Theriogenology, 47, 665, 10.1016/S0093-691X(97)00025-3 Blanchard, 2000, Increased germ cell loss rates and poor semen quality in stallions with idiopathic testicular degeneration, J Equine Vet Sci, 20, 263, 10.1016/S0737-0806(00)80345-7 Kenney, 1995, Relationship between sperm chromatin structure, motility, and morphology of ejaculated sperm, and seasonal pregnancy rate, Biol Reprod Mono, 1, 647, 10.1093/biolreprod/52.monograph_series1.647 Roser, 1995, Endocrine regulation of reproductive function in fertile, subfertile and infertile stallions, Reprod Domest Anim, 30, 245, 10.1111/j.1439-0531.1995.tb00154.x Roser, 1997, Endocrine basis for testicular function in the stallion, Theriogenology, 48, 883, 10.1016/S0093-691X(97)00309-9 Stewart, 1998, Effects of age, season and fertility status on plasma and intratesticular immunoreactive (IR) inhibin concentrations in stallions, Domest Anim Endocrinol, 15, 129, 10.1016/S0739-7240(97)00083-0 Turner, 2005, Xenografting of degenerate stallion testis onto a mouse host does not rescue the testicular degeneration phenotype, Anim Reprod Sci, 89, 253 Turner, 2006, Xenografting to study testis function in stallions, Anim Reprod Sci, 94, 161, 10.1016/j.anireprosci.2006.03.051 Burns, 1985, Reproductive hormone concentrations in stallions with breeding problems: case studies, J Equine Vet Sci, 5, 40, 10.1016/S0737-0806(85)80086-1 Douglas, 1992, Endocrine abnormalities and hormonal therapy, Vet Clin North Am Equine Pract, 8, 237, 10.1016/S0749-0739(17)30478-9 Roser, 1992, Seasonal effects on seminal quality, plasma hormone concentrations and GnRH-induced LH response in fertile and subfertile stallions, J Androl, 13, 214 Roser, 1992, Dose-response effects of GnRH on gonadotropins and testicular steroids in fertile and subfertile stallions, J Androl, 13, 543 Roser, 2007, Endocrine diagnostics and therapeutics for the stallion with declining fertility, 244 Pickett, 1989, Influence of insemination volume and sperm number on fertility, 51 Blanchard, 1993, Testicular degeneration, 855 Blanchard, 2011, Management of subfertile stallions under natural-mating conditions, 1240 Brinsko, 2011 Blanchard, 2006, Role of reinforcement breeding in a natural service mating program, Proc Annu Meet Am Assoc Equine Pract, 52, 384 Blanchard, 2008, How to use planned multiple matings per estrus to improve pregnancy rates achieved by some aged subfertile stallions, Proc Annu Meet Am Assoc Equine Pract, 54, 364 Brinsko, 2005, Effect of feeding a DHA-enriched nutraceutical on the quality of fresh, cooled and frozen stallion semen, Theriogenology, 63, 1519, 10.1016/j.theriogenology.2004.07.010 Harris, 2005, Effects of feeding an omega-3 rich supplement on the fatty acid composition and motion characteristics of stallion spermatozoa, Proc Annu Meet Equine Sci Soc, 19, 239 Harris, 2005, Stallion spermatozoa membrane phospholipids dynamics following dietary n-3 supplementation, Anim Reprod Sci, 89, 234 Brinkerhoff, 2010, Influence of mare age, pre-breeding mare status, breeding method, and stallion on first-cycle pregnancy rates on a large commercial breeding farm, Anim Reprod Sci, 121S, 159 Jasko, 1992, Effect of insemination volume and concentration of spermatozoa on embryo recovery in mares, Theriogenology, 37, 1233, 10.1016/0093-691X(92)90179-U Katila, 2000, Transport of spermatozoa in the genital tract of mares, J Reprod Fertil Suppl, 56, 571 Foster, 2011, Agreement between measures of total motility and membrane integrity in stallion sperm, Theriogenology, 75, 1499, 10.1016/j.theriogenology.2010.12.011 Morris, 2006, Advanced insemination techniques in mares, Vet Clin North Am Equine Pract, 22, 693, 10.1016/j.cveq.2006.07.001 Morris, 2003, Pregnancy rates in mares after a single fixed time hysteroscopic insemination of low numbers of frozen-thawed spermatozoa onto the uterotubal junction, Equine Vet J, 35, 197, 10.2746/042516403776114162 Morris, 2002, An overview of low dose insemination in the mare, Reprod Domest Anim, 37, 206, 10.1046/j.1439-0531.2002.00375.x Ismer NN. Klinische Untersuchungen zur endoskopisch kontrollierten Samenübertragung bei Warmblutstuten unter Praxisbedingungen - clinical investigation on the endoscopically controlled artificial insemination of warmblood mares under field conditions [thesis]. Vet School Hanover 2002. Available at: http://elib.tiho-hannover.de/dissertations/ismern_2002.html. Blanchard, 2012, Case study of processing and insemination techniques: attempts to improve fertility of an aged stallion with dilute semen of poor quality, J Equine Vet Sci, 32, 5, 10.1016/j.jevs.2011.06.010 Nie, 2003, Pregnancy outcome in mares following insemination deep in the uterine horn with low numbers of sperm selected by glass wool/Sephadex filtration, Percoll separation or absolute number, Anim Reprod Sci, 79, 103, 10.1016/S0378-4320(03)00086-1 Scott, 1995, Sperm transport to the oviducts: abnormalities and their clinical implications, Proc Annu Meet Am Assoc Equine Pract, 41, 1 Scott, 2000, Sperm transport and function in the mare: a new cause of subfertility, J Equine Vet Sci, 20, 93, 10.1016/S0737-0806(00)80445-1 Scott, 2000, The structural and epithelial association of spermatozoa at the uterotubal junction: a descriptive study of equine spermatozoa in situ using scanning electron microscopy, J Reprod Fertil Suppl, 56, 415