Projects

Improve Nutrient Management and Efficiency in Cattle Appropriated (D)   Accession Number: 412409

Publications

Influence of Reproductive Ageing of the Cow on Luteal Function and Period 1 mRNA Expression - (Abstract) - (17-Apr-09)

Association Between Preovulatory Concentrations of Estradiol and Expression of Uterine Milk Protein Precursor, Inhibin ßA, Period 1, Proenkephalin, and Receptors for Oxytocin, Progesterone, and Estradiol - (Abstract) - (17-Apr-09)

Evaluation of Antral Follicle Count and Ovarian Morphology in Crossbred Beef Cows: Investigation of Influence of Stage of the Estrous Cycle, Age, and Birth Weight - (Peer Reviewed Journal) - (16-Feb-09)

Vascular endothelial growth factor (VEGF) mRNA isoforms are altered in bovine granulosa cells (GC) by circulating progestin concentrations (P4) and may indicate follicle status and oocyte competence - (Abstract) - (12-Nov-08)

Influence of exogenous progestin on ovarian function in beef cows - (Abstract) - (11-Nov-08)

Achievements of Research in Reproduction Sciences - (Review Article)

Cushman, R.A., Allan, M.F., Kuehn, L.A. 2009. Achievements of Research in Reproduction Sciences. In: Rosati, A., Tewolde, A., Mosconi, C., editors. Animal Production and Animal Science Worldwide - WAAP Book of the Year 2007. The Netherlands: Wageningen Academic Publishers. p. 59-65.

MicroRNA expression profile in bovine cumulus-oocyte complexes during late oogenesis - (Abstract)

Miles, J.R., McDaneld, T.G., Wiedmann, R.T., Cushman, R.A., Echternkamp, S.E., Vallet, J.L., Smith, T.P.L. 2009. MicroRNA expression profile in bovine cumulus-oocyte complexes during late oogenesis [abstract]. Reproduction, Fertility and Development. 21(1):186 (Abstract #174).

Confirmation of quantitative trait loci using a low-density single nucleotide polymorphism map for twinning and ovulation rate on bovine chromosome 5 - (Peer Reviewed Journal)

Allan, M.F., Kuehn, L.A., Cushman, R.A., Snelling, W.M., Echternkamp, S.E., Thallman, R.M. 2009. 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. 87(1):46-56.

Characterization of biological types of cattle: Indicator traits of fertility in beef cows - (Review Article)

Cushman, R.A., Allan, M.F., Kuehn, L.A. 2008. Characterization of biological types of cattle: Indicator traits of fertility in beef cows. Brazilian Journal of Animal Science. 37(Special Supplement):116-121.

Relationship of antral follicle counts to fertility and ovarian AMH mRNA levels in beef cows - (Abstract)

Cushman, R., Miles, J., Allan, M., Kuehn, L., Echternkamp, S., Freetly, H. 2008. Relationship of antral follicle counts to fertility and ovarian AMH mRNA levels in beef cows [abstract]. Biology of Reproduction. Special Issue:224 (Abstract #722).

Comparisons of mRNA expression for aromatase, FSH receptor, and IGF-I in the granulosa of small ovarian follicles between cattle selected and unselected for twin ovulations - (Abstract)

Echternkamp, S., Cushman, R., Spicer, L. 2008. Comparisons of mRNA expression for aromatase, FSH receptor, and IGF-I in the granulosa of small ovarian follicles between cattle selected and unselected for twin ovulations [abstract]. Biology of Reproduction. Special Issue:81 (Abstract #123).

Association between Period 1 mRNA levels in leukocytes and initiation of estrous cycles in peripubertal beef heifers - (Abstract)

Fields, S., Perry, B., Perry, G., Cushman, R. 2008. Association between Period 1 mRNA levels in leukocytes and initiation of estrous cycles in peripubertal beef heifers [abstract]. Biology of Reproduction. Special Issue:209 (Abstract #654).

MicroRNA (MiRNA) technology in livestock: expression profiling of bovine oocyte and developmental stages of porcine skeletal muscle - (Proceedings/Symposium)

Mcdaneld, T.G., Wiedmann, R.T., Miles, J.R., Cushman, R.A., Vallet, J.L., Smith, T.P. 2007. MicroRNA (MiRNA) technology in livestock: expression profiling of bovine oocyte and developmental stages of porcine skeletal muscle. Conference Proc., National Swine Improvement Federation Conference & Ann. Mtg., Dec. 5-7, 2007. Kansas City, MO, NSIF Volume 32, www.nsif.com.

Association between age and ovarian morphology in crossbred beef cows - (Abstract)

Cushman, R.A. 2008. Association between age and ovarian morphology in crossbred beef cows [abstract]. Journal of Animal Science. 86 (E-Supplement 3):106-107 (Abstract #231).

Increased calf production in cattle selected for twin ovulations - (Peer Reviewed Journal)

Echternkamp, S.E., Thallman, R.M., Cushman, R.A., Allan, M.F., Gregory, K.E. 2007. Increased calf production in cattle selected for twin ovulations. Journal of Animal Science. 85(12):3239-3248.

Effects of ovulation rate and fetal number on fertility in twin-producing cattle - (Peer Reviewed Journal)

Echternkamp, S.E., Cushman, R.A., Allan, M.F., Thallman, R.M., Gregory, K.E. 2007. Effects of ovulation rate and fetal number on fertility in twin-producing cattle. Journal of Animal Science. 85(12):3228-3238.

Characterization of biological types of cattle (Cycle VII): Influence of postpartum interval and estrous cycle length on fertility - (Peer Reviewed Journal)

Cushman, R.A., Allan, M.F., Thallman, R.M., Cundiff, L.V. 2007. Characterization of biological types of cattle (Cycle VII): Influence of postpartum interval and estrous cycle length on fertility. Journal of Animal Science. 85(9):2156-2162.

Identification of indicator traits of fertility in the postpartum beef cow - (Abstract)

Cushman, R., Echternkamp, S., Allan, M., Freetly, H. 2007. Identification of indicator traits of fertility in the postpartum beef cow [abstract]. Biology of Reproduction. Special Issue:187-188.

Influence of breed on postpartum interval and estrous cycle length in beef cattle - (Abstract)

Cushman, R.A., Allan, M.F., Thallman, R.M., Cundiff, L.V. 2007. Influence of breed on postpartum interval and estrous cycle length in beef cattle [abstract]. Journal of Animal Science. 85 (Supplement 1):370. (Abstract #401)

Increasing ovulation rate reduced follicle size and increased blood progesterone concentrations but had no effect on fertility in cattle selected for twins - (Abstract)

Echternkamp, S.E., Cushman, R.A., Allan, M.F. 2007. Increasing ovulation rate reduced follicle size and increased blood progesterone concentrations but had no effect on fertility in cattle selected for twins [abstract]. Journal of Animal Science. 85 (Supplement 1):649. (Abstract #886)

Fine mapping of QTL for twinning and ovulation rate using low density SNP map in conjunction with microsatellite marker information in the USMARC twinning population - (Abstract)

Allan, M.F., Thallman, R.M., Cushman, R.A., Echternkamp, S.E., Kuehn, L.A., Snelling, W.M. 2007. Fine mapping of QTL for twinning and ovulation rate using low density SNP map in conjunction with microsatellite marker information in the USMARC twinning population [abstract]. Plant & Animal Genome XV Conference. Poster No. 521. p. 231.

Association of a Single Nucleotide Polymorphism in Spp1 with Growth Traits and Twinning in a Cattle Population Selected for Twinning Rate - (Peer Reviewed Journal)

Allan, M.F., Thallman, R.M., Cushman, R.A., Echternkamp, S.E., White, S.N., Kuehn, L.A., Casas, E., Smith, T.P. 2007. 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. 85(2):341-347.

Localization of Period 1 Mrna in the Ruminant Oocyte and Investigations of Its Role in Ovarian Function - (Peer Reviewed Journal)

Cushman, R.A., Allan, M.F., Jones, S.A., Rupp, G.P., Echternkamp, S.E. 2007. Localization of Period 1 mRNA in the ruminant oocyte and investigations of its role in ovarian function. Animal Reproduction Science. 99(1-2):93-105.

Inhibition of Vascular Endothelial Growth Factor Signaling Blocks Primordial Follicle Activation in Bovine Ovarian Cortical Cultures - (Abstract)

Cushman, R.A., Allan, M.F., Clopton, D.T., Echternkamp, S.E., Cupp, A.S. 2006. Inhibition of vascular endothelial growth factor signaling blocks primordial follicle activation in bovine ovarian cortical cultures [abstract]. Biology of Reproduction. (Supplement):144. (Abstract #325)

Relationship of Circulating Progesterone Concentrations to Ovulation Rate and Fertility in Cattle Selected for Twin Ovulations - (Abstract)

Echternkamp, S.E., Cushman, R.A., Allan, M.F. 2006. Relationship of circulating progesterone concentrations to ovulation rate and fertility in cattle selected for twin ovulations [abstract]. Biology of Reproduction. (Supplement):139. (Abstract #301)

Localization of Period 1 Mrna in the Ruminant Oocyte and Investigations of Its Role in Ovarian Function - (Abstract)

Cushman, R.A., Allan, M.F., Jones, S., Rupp, G.P., Echternkamp, S.E. 2006. Localization of Period 1 mRNA in the ruminant oocyte and investigations of its role in ovarian function [abstract]. Journal of Animal Science. 84 (Supplement 1):452-453. (Abstract #641)

Effects of Ovulation Rate and Fetal Number on Fertility in Twin-Producing Cattle - (Abstract)

Echternkamp, S.E., Cushman, R.A., Allan, M.F. 2006. Effects of ovulation rate and fetal number on fertility in twin-producing cattle [abstract]. Journal of Animal Science. 84 (Supplement 1):152. (Abstract #209)

Observed and Predicted Numbers of Single, Twin, and Triplet Births in a Cattle Population Selected for Increased Twinning - (Abstract)

Bennett, G.L., Allan, M.F., Cushman, R.A., Echternkamp, S.E. 2006. Observed and predicted numbers of single, twin, and triplet births in a cattle population selected for increased twinning [abstract]. Journal of Animal Science 84(Suppl. 1):203.

Relationship Between Concentrations of Pregnancy-Associated Glycoproteins (Pag) in Maternal Blood and Fetal Number and Status in Pregnant Cows - (Abstract)

Echternkamp, S.E., Green, J.A., Vonnahme, K.A., Cushman, R.A., Allan, M.F. Relationship between concentrations of pregnancy-associated glycoproteins (PAG) in maternal blood and fetal number and status in pregnant cows. Journal of Animal Science. 84(Supplement 2):127. (Abstract #301)

Comparison of Fertility, Luteal Characteristics, and Luteal Function Between Unilateral and Bilateral Double Ovulations - (Abstract)

Cushman, R., Allan, M., Christenson, R., Echternkamp, S. 2006. Comparison of fertility, luteal characteristics, and luteal function between unilateral and bilateral double ovulations [abstract]. Journal of Animal Science. 84 (Supplement 2):127. (Abstract #300)

Evaluation of Ovulation Rate and Ovarian Phenotype in Puberal Heifers from a Cattle Population Selected for Increased Ovulation Rate - (Peer Reviewed Journal)

Cushman, R.A., Allan, M.F., Snowder, G.D., Thallman, R.M., Echternkamp, S.E. 2005. Evaluation of ovulation rate and ovarian phenotype in puberal heifers from a cattle population selected for increased ovulation rate. Journal of Animal Science. 83(8):1839-1844.

Differential Gene Expression in the Ovarian Cortex of Cows Selected for Multiple Ovulations - (Abstract)

Cushman, R.A., Allan, M.F., Christenson, R., Echternkamp, S.E. 2005. Differential gene expression in the ovarian cortex of cows selected for multiple ovulations [abstract]. Biology of Reproduction. (Supplement):188. (Abstract #W483)

Increased Mrna Expression for Fsh Receptor in Small Antral Follicles in the Ovarian Cortex of Twin-Producing Cattle - (Abstract)

Echternkamp, S.E., Cushman, R.A., Christenson, R. 2005. Increased mRNA expression for FSH receptor in small antral follicles in the ovarian cortex of twin-producing cattle [abstract]. Biology of Reproduction. (Supplement):93. (Abstract #53)

Evidence for a Role for Anti-Mullerian Hormone in the Suppression of Follicle Activation in Mouse Ovaries and Bovine Ovarian Cortex grafted Beneath the Chick Chorioallantoic Membrane - (Peer Reviewed Journal)

Gigli, I., Cushman, R.A., Wahl, C.M., Fortune, J.E. 2005. Evidence for a role for anti-Mullerian hormone in the suppression of follicle activation in mouse ovaries and bovine ovarian cortex grafted beneath the chick chorioallantoic membrane. Molecular Reproduction and Development. 71(4):480-488.

Evaluation of Ovulation Rate and Ovarian Phenotype in Puberal Heifers from a Cattle Population Selected for Multiple Births - (Abstract)

Cushman, R.A., Allan, M.F., Snowder, G.D., Thallman, R.M., Echternkamp, S.E. 2005. Evaluation of ovulation rate and ovarian phenotype in puberal heifers from a cattle population selected for multiple births [abstract]. Journal of Animal Science. 83 (Supplement 2):86-87.

Heritability Estimate for Bilateral Ovulation in Heifers - (Abstract)

Snowder, G.D., Cushman, R.A., Allan, M.F., Thallman, R.M., Echternkamp, S.E. 2005. Heritability estimate for bilateral ovulation in heifers [abstract]. Midwestern Section of the American Society of Animal Science 83(2):39.

Effect of Ovulation Rate on Development of the Ovine Corpus Luteum - (Abstract)

Echternkamp, S.E., Cushman, R.A., Christenson, R.K. 2004. Effect of ovulation rate on development of the ovine corpus luteum [abstract]. Journal of Animal Science. 82 (Supplement 1):67. (Abstract #M266)

Factors Affecting the Development of Preantral Follicles in Cattle - (Abstract)

Cushman, R.A., Allan, M.F., Echternkamp, S.E. 2004. Factors affecting the development of preantral follicles in cattle [abstract]. Journal of Animal Science. 82 (Supplement 2):85. (Abstract #230)

Bovine Ovarian Cortical Pieces Grafted to Chick Embryonic Membranes: a Model for Studies on the Activation of Primordial Follicles - (Peer Reviewed Journal)

Cushman, R.A., Wahl, C.M., Fortune, J.E. 2002. Bovine ovarian cortical pieces grafted to chick embryonic membranes: a model for studies on the activation of primordial follicles. Human Reproduction. 17(1):48-54.

Alteration of Activation, Growth, and Atresia of Bovine Preantral Follicles by Long-Term Treatment of Cows with Estradiol and Recombinant Bovine Somatotropin - (Peer Reviewed Journal)

Cushman, R.A., Desouza, J.C., Hedgpeth, V.S., Britt, J.H. 2001. Alteration of activation, growth, and atresia of bovine preantral follicles by long-term treatment of cows with estradiol and recombinant bovine somatotropin. Biology of Reproduction. 65(2):581-586.

Effect of Long-Term Treatment with Recombinant Bovine Somatotropin and Estradiol on Hormone Concentrations and Ovulatory Response of Superovulated Cattle - (Peer Reviewed Journal)

Cushman, R.A., Desouza, J.C., Hedgpeth, V.S., Britt, J.H. 2001. Effect of long-term treatment with recombinant bovine somatotropin and estradiol on hormone concentrations and ovulatory response of superovulated cattle. Theriogenology. 55(7):1533-1547.

The Primordial to Primary Follicle Transition - (Review Article)

Fortune, J.E., Cushman, R.A., Wahl, C.M., Kito, S. 2000. The primordial to primary follicle transition. Molecular and Cellular Endocrinology. 163(1/2):53-60.

Technical Note: Use of Slow-Release Estradiol and Prostaglandin F2alpha to Induce Pseudopregnancy and Control Estrus in Gilts - (Peer Reviewed Journal)

Cushman, R.A., Davis, P.E., Boonyaprakob, U., Hedgpeth, V.S., Burns, P.J., Britt, J.H. 1999. Technical note: Use of slow-release estradiol and prostaglandin F2alpha to induce pseudopregnancy and control estrus in gilts. Journal of Animal Science. 77(11):2883-2885.

Superovulatory Response of One Ovary Is Related to the Micro and Macroscopic Population of Follicles in the Contralateral Ovary of the Cow - (Peer Reviewed Journal)

Cushman, R.A., Desouza, J.C., Hedgpeth, V.S., Britt, J.H. 1999. Superovulatory response of one ovary is related to the micro- and macroscopic population of follicles in the contralateral ovary of the cow. Biology of Reproduction. 60(2):349-354.

In Vivo Desensitization of a High Affinity Pgf2alpha Receptor in the Ovine Corpus Luteum - (Peer Reviewed Journal)

Lamsa, J.C., Cushman, R.A., Nay, M.G., Mccracken, J.A. 1992. In vivo desensitization of a high affinity PGF2alpha receptor in the ovine corpus luteum. Prostaglandins. 43(2):165-179.