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SE Echternkamp

Research Profile

Living Beings

Cattle
Twins

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Publications

TOP 3
Pauline Y. Aad; SE Echternkamp; Nicole B Schreiber; David D Sypherd; Leon Spicer
The hedgehog system in ovarian follicles of cattle selected for twin ovulations and births: evidence of a link between the IGF and hedgehog systems.
SE Echternkamp; Pauline Y. Aad; D R Eborn; L J Spicer
Increased abundance of aromatase and follicle stimulating hormone receptor mRNA and decreased insulin-like growth factor-2 receptor mRNA in small ovarian follicles of cattle selected for twin births.
SE Echternkamp; R Mark Thallman
Factors affecting pregnancy rate to estrous synchronization and fixed-time artificial insemination in beef cattle.

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All Publications

2012: Pauline Y. Aad; SE Echternkamp; Nicole B Schreiber; David D Sypherd; Leon Spicer
The hedgehog system in ovarian follicles of cattle selected for twin ovulations and births: evidence of a link between the IGF and hedgehog systems.
Biology of reproduction 2012;87(4):79.
2012: SE Echternkamp; Pauline Y. Aad; D R Eborn; L J Spicer
Increased abundance of aromatase and follicle stimulating hormone receptor mRNA and decreased insulin-like growth factor-2 receptor mRNA in small ovarian follicles of cattle selected for twin births.
Journal of animal science 2012;90(7):2193-200.
2011: SE Echternkamp; R Mark Thallman
Factors affecting pregnancy rate to estrous synchronization and fixed-time artificial insemination in beef cattle.
Journal of animal science 2011;89(10):3060-8.
2009: SE Echternkamp; RA Cushman; MF Allan
Size of ovulatory follicles in cattle expressing multiple ovulations naturally and its influence on corpus luteum development and fertility.
Journal of animal science 2009;87(11):3556-68.
2009: MF Allan; Larry A Kuehn; RA Cushman; Warren M Snelling; SE Echternkamp; R Mark Thallman
Confirmation of quantitative trait loci using a low-density single nucleotide polymorphism map for twinning and ovulation rate on bovine chromosome 5.
Journal of animal science 2009;87(1):46-56.
2007: SE Echternkamp; R Mark Thallman; RA Cushman; MF Allan; KE Gregory
Increased calf production in cattle selected for twin ovulations.
Journal of animal science 2007;85(12):3239-48.
2007: SE Echternkamp; RA Cushman; MF Allan; R Mark Thallman; KE Gregory
Effects of ovulation rate and fetal number on fertility in twin-producing cattle.
Journal of animal science 2007;85(12):3228-38.
2007: RA Cushman; M F Allan; S A Jones; G P Rupp; SE Echternkamp
Localization of Period 1 mRNA in the ruminant oocyte and investigations of its role in ovarian function.
Animal reproduction science 2007;99(1-2):93-105.
2007: MF Allan; R Mark Thallman; RA Cushman; SE Echternkamp; SN White; Larry A Kuehn; Eduardo Casas; Timothy P L Smith
Association of a single nucleotide polymorphism in SPP1 with growth traits and twinning in a cattle population selected for twinning rate.
Journal of animal science 2007;85(2):341-7.
2006: Andrew J Roberts; M J Al-Hassan; PM Fricke; SE Echternkamp
Large variation in steroid concentrations and insulin-like growth factor binding proteins exists among individual small antral follicles collected from within cows at random stages of the estrous cycle.
Journal of animal science 2006;84(10):2714-24.
2005: RA Cushman; MF Allan; Gary Snowder; R Mark Thallman; SE Echternkamp
Evaluation of ovulation rate and ovarian phenotype in puberal heifers from a cattle population selected for increased ovulation rate.
Journal of animal science 2005;83(8):1839-44.
2004: SE Echternkamp; Andrew J Roberts; Donald D Lunstra; T Wise; Leon Spicer
Ovarian follicular development in cattle selected for twin ovulations and births.
Journal of animal science 2004;82(2):459-71.
2003: Andrew J Roberts; SE Echternkamp
Insulin-like growth factor binding proteins in granulosa and thecal cells from bovine ovarian follicles at different stages of development.
Journal of animal science 2003;81(11):2826-39.
2000: Steven M Kappes; Gary L Bennett; John W Keele; SE Echternkamp; KE Gregory; R Mark Thallman
Initial results of genomic scans for ovulation rate in a cattle population selected for increased twinning rate.
Journal of animal science 2000;78(12):3053-9.
2000: RA Cushman; Vickie Hedgpeth; SE Echternkamp; Jack Britt
Evaluation of numbers of microscopic and macroscopic follicles in cattle selected for twinning.
Journal of animal science 2000;78(6):1564-7.
1999: SE Echternkamp; KE Gregory
Effects of twinning on postpartum reproductive performance in cattle selected for twin births.
Journal of animal science 1999;77(1):48-60.
1999: SE Echternkamp; KE Gregory
Effects of twinning on gestation length, retained placenta, and dystocia.
Journal of animal science 1999;77(1):39-47.
1998: Gary L Bennett; SE Echternkamp; KE Gregory
A model of litter size distribution in cattle.
Journal of animal science 1998;76(7):1789-93.
1997: KE Gregory; Gary L Bennett; L Dale Van Vleck; SE Echternkamp; LV Cundiff
Genetic and environmental parameters for ovulation rate, twinning rate, and weight traits in a cattle population selected for twinning.
Journal of animal science 1997;75(5):1213-22.
1996: R E Stewart; Leon Spicer; T D Hamilton; B E Keefer; L J Dawson; Gregor L Morgan; SE Echternkamp
Levels of insulin-like growth factor (IGF) binding proteins, luteinizing hormone and IGF-I receptors, and steroids in dominant follicles during the first follicular wave in cattle exhibiting regular estrous cycles.
Endocrinology 1996;137(7):2842-50.
1996: KE Gregory; SE Echternkamp; LV Cundiff
Effects of twinning on dystocia, calf survival, calf growth, carcass traits, and cow productivity.
Journal of animal science 1996;74(6):1223-33.
1995: Leon Spicer; SE Echternkamp
The ovarian insulin and insulin-like growth factor system with an emphasis on domestic animals.
Domestic animal endocrinology 1995;12(3):223-45.
1995: Leon Spicer; SE Echternkamp; E A Wong; D T Hamilton; R K Vernon
Serum hormones, follicular fluid steroids, insulin-like growth factors and their binding proteins, and ovarian IGF mRNA in sheep with different ovulation rates.
Journal of animal science 1995;73(4):1152-63.
1994: SE Echternkamp; Leon Spicer; J Klindt; R K Vernon; J T Yen; F C Buonomo
Administration of porcine somatotropin by a sustained-release implant: effect on follicular growth, concentrations of steroids and insulin-like growth factor I, and insulin-like growth factor binding protein activity in follicular fluid of control, lean, and obese gilts.
Journal of animal science 1994;72(9):2431-40.
1994: Andrew J Roberts; SE Echternkamp
In vitro production of estradiol by bovine granulosa cells: evaluation of culture condition, stage of follicular development, and location of cells within follicles.
Biology of reproduction 1994;51(2):273-82.
1993: Leon Spicer; E Alpizar; SE Echternkamp
Effects of insulin, insulin-like growth factor I, and gonadotropins on bovine granulosa cell proliferation, progesterone production, estradiol production, and(or) insulin-like growth factor I production in vitro.
Journal of animal science 1993;71(5):1232-41.
1992: Leon Spicer; J Klindt; F C Buonomo; R Maurer; J T Yen; SE Echternkamp
Effect of porcine somatotropin on number of granulosa cell luteinizing hormone/human chorionic gonadotropin receptors, oocyte viability, and concentrations of steroids and insulin-like growth factors I and II in follicular fluid of lean and obese gilts.
Journal of animal science 1992;70(10):3149-57.
1991: L Dale Van Vleck; KE Gregory; SE Echternkamp
Prediction of breeding values for twinning rate and ovulation rate with a multiple trait, repeated records animal model.
Journal of animal science 1991;69(10):3959-66.
1991: L Dale Van Vleck; KE Gregory; SE Echternkamp
Ovulation rate and twinning rate in cattle: heritabilities and genetic correlation.
Journal of animal science 1991;69(8):3213-9.
1990: KE Gregory; SE Echternkamp; G E Dickerson; LV Cundiff; RM Koch; L Dale Van Vleck
Twinning in cattle: III. Effects of twinning on dystocia, reproductive traits, calf survival, calf growth and cow productivity.
Journal of animal science 1990;68(10):3133-44.
1990: SE Echternkamp; Leon Spicer; KE Gregory; S F Canning; J M Hammond
Concentrations of insulin-like growth factor-I in blood and ovarian follicular fluid of cattle selected for twins.
Biology of reproduction 1990;43(1):8-14.
1990: SE Echternkamp; KE Gregory; G E Dickerson; LV Cundiff; RM Koch; L Dale Van Vleck
Twinning in cattle: II. Genetic and environmental effects on ovulation rate in puberal heifers and postpartum cows and the effects of ovulation rate on embryonic survival.
Journal of animal science 1990;68(7):1877-88.
1990: KE Gregory; SE Echternkamp; G E Dickerson; LV Cundiff; RM Koch; L Dale Van Vleck
Twinning in cattle: I. Foundation animals and genetic and environmental effects on twinning rate.
Journal of animal science 1990;68(7):1867-76.
1989: R R Maurer; SE Echternkamp; T H Wise
Ovarian responses to intramuscular or intravenous administration of prostaglandin F2 alpha in control and FSH-treated beef heifers.
Journal of animal science 1989;67(8):2075-80.
1988: Leon Spicer; SE Echternkamp; S F Canning; J M Hammond
Relationship between concentrations of immunoreactive insulin-like growth factor-I in follicular fluid and various biochemical markers of differentiation in bovine antral follicles.
Biology of reproduction 1988;39(3):573-80.
1987: Leon Spicer; P Matton; SE Echternkamp; E M Convey; HA Tucker
Relationships between histological signs of atresia, steroids in follicular fluid, and gonadotropin binding in individual bovine antral follicles during postpartum anovulation.
Biology of reproduction 1987;36(4):890-8.
1987: Leon Spicer; HA Tucker; E M Convey; SE Echternkamp
Comparison of surface diameters and dissected diameters of bovine ovarian follicles.
Journal of animal science 1987;64(1):226-30.
1986: Leon Spicer; E M Convey; HA Tucker; SE Echternkamp
Effects of intermittent injections of LHRH on specific binding of 125I-labeled gonadotropins to granulosa and theca, and concentrations of steroids in serum and ovarian follicles during postpartum anovulation in suckled beef cows.
Journal of animal science 1986;62(5):1324-31.
1986: Leon Spicer; E M Convey; HA Tucker; SE Echternkamp
Effects of intermittent injections of LHRH on secretory patterns of LH and FSH and ovarian follicular growth during postpartum anovulation in suckled beef cows.
Journal of animal science 1986;62(5):1317-23.
1986: Leon Spicer; SE Echternkamp
Ovarian follicular growth, function and turnover in cattle: a review.
Journal of animal science 1986;62(2):428-51.