Projects

STRATEGIES TO IMPROVE HEIFER SELECTION AND HEIFER DEVELOPMENT Appropriated (D)   Accession Number: 423658

Publications (Clicking on the reprint icon will take you to the publication reprint.)

Effect of age at puberty/conception date on cow longevity - (Book / Chapter) - (17-May-13)

PRSS23 and the plasminogen activator system in the ovine placentome during late gestation and stage two of parturition - (Peer Reviewed Journal) - (09-Apr-13)

Does reduced peri-pubertal nutrient intake influence the ovarian reserve in beef heifers? - (Abstract Only) - (28-Mar-13)

Lipogenic-associated gene activity of adipose tissue from beef heifers and relation to production and reproductive traits - (Abstract Only) - (08-Mar-13)

Relationship of follicle size and concentrations of estradiol among cows that do and do not exhibit estrus during a fixed-time AI protocol - (Abstract Only) - (08-Mar-13)

The effects of selecting for the myostatin F94L polymorphism on reproductive traits in pubertal heifers - (Abstract Only) - (06-Mar-13)

CAPN1 and GDF8 genetic marker effects on heifer performance, reproduction, and first calf performance traits in beef cattle - (Abstract Only) - (24-Feb-13)

Identification of an ionotropic glutamate receptor AMPA1/GRIA1 polymorphism in crossbred beef cows differing in fertility - (Peer Reviewed Journal) - (18-Feb-13)

Technical Report: Serial collections of placentomes during parturition in cattle and subsequent reproductive performance - (Peer Reviewed Journal) - (28-Jan-13)

Physiology and Endocrinology Symposium: The current status of heat shock in early embryonic survival and reproductive efficiency - (Other)

Cushman, R.A. 2013. Physiology and Endocrinology Symposium: The current status of heat shock in early embryonic survival and reproductive efficiency. Journal of Animal Science. 91(3):1141-1142.

How our basic understanding of the ovarian reserve is improving reproductive management in domestic farm animals - (Abstract Only)

Cushman, R.A., McNeel, A., Chase, C., Jr., Lents, C. 2013. How our basic understanding of the ovarian reserve is improving reproductive management in domestic farm animals [abstract]. Journal of Animal Science. 91 (Supplement 2):77-78 (Abstract #O237).

Bovine females with thecal cell androgen excess result in altered oocyte maternal effect gene abundance - (Abstract Only)

Summers, A.F., Pohlmeier, W.E., Brauer, V.M., Sargent, K.M., McFee, R.M., Cushman, R.A., Wood, J.R., Cupp, A.S. 2013. Bovine females with thecal cell androgen excess result in altered oocyte maternal effect gene abundance [abstract]. Journal of Animal Science. 91 (Supplement 2):47 (Abstract #O136).

Effect of heifer calving date on longevity and lifetime productivity - (Proceedings)

Mousel, E.M., Cushman, R.A., Perry, G.A., Kill, L.K. 2012. Effect of heifer calving date on longevity and lifetime productivity. Proceedings, Applied Reproductive Strategies in Beef Cattle, Sioux Falls, SD, December 3-4, 2012. pp. 23-31.

Management strategies for improving lifetime reproductive success in beef heifers - (Proceedings)

Perry, G.A., Larimore, E.L., Bridges, G.A., Cushman, R.A. 2012. Management strategies for improving lifetime reproductive success in beef heifers. Proceedings, Applied Reproductive Strategies in Beef Cattle, Sioux Falls, SD, December 3-4, 2012. pp. 249-266.

What we know about the genetics of reproduction - (Proceedings)

Cushman, R.A., Perry, G.A. 2012. What we know about the genetics of reproduction. Proceedings, Applied Reproductive Strategies in Beef Cattle, Sioux Falls, SD, December 3-4, 2012. pp. 165-173.

Networks and pathways to guide genomic selection - (Peer Reviewed Journal)

Snelling, W.M., Cushman, R.A., Keele, J.W., Maltecca, C., Thomas, M.G., Fortes, M.R., Reverter, A. 2013. Networks and pathways to guide genomic selection. Journal of Animal Science. 91(2):537-552.

Prostaglandin F2a activates stress response signaling and induces expression of activating transcription factor 3 (ATF3) in bovine large luteal cells - (Abstract Only) - (19-Jun-12)

Heifers with low antral follicle counts have low birth weights and produce progeny with low birth weights - (Proceedings)

Summers, A.F., Cushman, R.A., Cupp, A.S. 2012. Heifers with low antral follicle counts have low birth weights and produce progeny with low birth weights. Proceedings, Western Section, American Society of Animal Science. 63:217-220.

Litter size influences lamb weight and ovarian reserve but not reproductive tract development or expression of genes involved in early follicular development - (Abstract Only) - (13-Apr-12)

VEGFA164_B mRNA abundance has a positive relationship to AMH, BCL2 and the ratio of E2:A4 in mural granulosa cells of estrogen active and inactive follicles prior to ovulation - (Abstract Only) - (13-Apr-12)

Adipose and muscle tissue expression of two genes (NCAPG and LCORL) located in a chromosomal region associated with cattle feed intake and gain - (Abstract Only)

Lindholm-Perry, A.K., Sexten, A.K., Kuehn, L.A., Rempel, L.A., Miles, J.R., Cushman, R.A., Freetly, H.C. 2012. Adipose and muscle tissue expression of two genes (NCAPG and LCORL) located in a chromosomal region associated with cattle feed intake and gain [abstract]. Journal of Animal Science. 90(Suppl. 3):453.

Networks and pathways to guide genomic selection - (Abstract Only)

Snelling, W.M., Cushman, R.A., Keele, J.W., Maltecca, C., Thomas, M.G., Fortes, M.R., Reverter, A. 2012. Networks and pathways to guide genomic selection [abstract]. Journal of Animal Science Supplement. 90(Supplement 3):162. (Abstract No. 57).

Heifers with low antral follicle counts have low birth weights and produce progeny with low birth weights - (Abstract Only)

Summers, A.F., Cushman, R.A., Cupp, A.S. 2012. Heifers with low antral follicle counts have low birth weights and produce progeny with low birth weights [abstract]. Journal of Animal Science. 90 (Supplement 3):680 (Abstract #702).

Reduced fertility in female progeny from beef heifers on dietary restriction during development - (Abstract Only)

Echternkamp, S.E., Eborn, D.R., Cushman, R.A. 2012. Reduced fertility in female progeny from beef heifers on dietary restriction during development [abstract]. Journal of Animal Science. 90 (Supplement 3):472 (Abstract #519).

The impact of cow nutrient status during the second and third trimester on development of the reproductive axis and fertility of daughters - (Abstract Only)

Cushman, R.A., McNeel, A.K., Freetly, H.C. 2012. The impact of cow nutrient status during the second and third trimester on development of the reproductive axis and fertility of daughters [abstract]. Journal of Animal Science. 90 (Supplement 3):472 (Abstract #520).

Expression of PRSS, the plasminogen activator system and its activity in the ovine placentome during Stage 2 of parturition - (Abstract Only)

McNeel, A.K., Cushman, R.A., Vallet, J.L. 2012. Expression of PRSS, the plasminogen activator system and its activity in the ovine placentome during stage 2 of parturition [abstract]. Journal of Animal Science. 90 (Supplement 3):471 (Abstract #517).

Evaluation of bovine chemerin (RARRES2) gene variation on beef cattle production traits - (Peer Reviewed Journal)

Lindholm-Perry, A.K., Kuehn, L.A., Rempel, L.A., Smith, T.P., Cushman, R.A., McDaneld, T.G., Wheeler, T.L., Shackelford, S.D., King, D.A., Freetly, H.C. 2012. Evaluation of bovine chemerin (RARRES2) gene variation on beef cattle production traits. Frontiers in Genetics. 3:39.

Commentary: Evidence that the autoimmune regulator gene influences thymic production of ovarian antigens and prevents autoimmune-mediated premature reproductive senescence - (Other)

Cushman, R.A. 2012. Commentary: Evidence that the autoimmune regulator gene influences thymic production of ovarian antigens and prevents autoimmune-mediated premature reproductive senescence. Biology of Reproduction. 86(4):109.

Contributions of the maternal uterine environment and piglet genotype on weaning survivability potential: I. Development of neonatal piglets after reciprocal embryo transfers between Meishan and White crossbred gilts - (Peer Reviewed Journal)

Miles, J.R., Vallet, J.L., Ford, J.J., Freking, B.A., Cushman, R.A., Oliver, W.T., Rempel, L.A. 2012. Contributions of the maternal uterine environment and piglet genotype on weaning survivability potential: I. Development of neonatal piglets after reciprocal embryo transfers between Meishan and White crossbred gilts. Journal of Animal Science. 90(7):2181-2192.

MicroRNA expression profile in bovine cumulus–oocyte complexes: Possible role of let-7 and miR-106a in the development of bovine oocytes - (Peer Reviewed Journal)

Miles, J.R., McDaneld, T.G., Wiedmann, R.T., Cushman, R.A., Echternkamp, S.E., Vallet, J.L., Smith, T.P.L. 2012. MicroRNA expression profile in bovine cumulus–oocyte complexes: Possible role of let-7 and miR-106a in the development of bovine oocytes. Animal Reproduction Sciences. 130(1-2):16-26.

Physiology and Endocrinology Symposium. Factors controlling puberty in beef heifers - (Other)

Fricke, P.M., Cushman, R.A. 2012. Physiology and Endocrinology Symposium. Factors controlling puberty in beef heifers. Journal of Animal Science. 90(4):1150-1151.

Effect of heifer calving date on longevity and lifetime productivity - (Abstract Only)

Kill, L.K., Mousel, E.M., Cushman, R.A., Perry, G.A. 2012. Effect of heifer calving date on longevity and lifetime productivity [abstract]. Journal of Animal Science. 90 (Supplement 2):131 (Abstract #340P).

Ultrasound and phenotypic measures of the reproductive tract of prepubertal gilts selected for increased uterine capacity - (Abstract Only)

Lents, C.A., Cushman, R.A., Freking, B.A. 2012. Ultrasound and phenotypic measures of the reproductive tract of prepubertal gilts selected for increased uterine capacity [abstract]. Journal of Animal Science. 90 (Supplement 2):118 (Abstract #299P).

How single nucleotide polymorphism chips will advance our knowledge of factors controlling puberty and aid in selecting replacement beef females - (Peer Reviewed Journal)

Snelling, W.M., Cushman, R.A., Fortes, M., Reverter, A., Bennett, G.L., Keele, J.W., Kuehn, L.A., McDaneld, T.G., Thallman, R.M., Thomas, M.G. 2012. How single nucleotide polymorphism chips will advance our knowledge of factors controlling puberty and aid in selecting replacement beef females. Journal of Animal Science. 90:1152-1165.

Investigation of a functional role for Titin in the bovine ovary based on the results of an initial whole genome scan for antral follicle count - (Abstract Only)

Cushman, R.A., Echternkamp, S.E. 2011. Investigation of a functional role for Titin in the bovine ovary based on the results of an initial whole genome scan for antral follicle count [abstract]. Biology of Reproduction. 85 (1 Supplement):199 (Abstract # 642).

Females with reduced fertility have excess androstenedione in follicular fluid, altered theca gene expression and increased VEGFA164b, maternal effect, and microRNA processing mRNA levels in cumulus-oocyte complexes - (Abstract Only)

Summers, A., Cushman, R., Smith, J.E., Lammers, B., Mcfee, R., Pohlmeier, W., Brauer, V., Sargent, K., Lu, N., Cupp, A.S., Wood, J.R. 2011. Females with reduced fertility have excess androstenedione in follicular fluid, altered theca gene expression and increased VEGFA164b, maternal effect, and microRNA processing mRNA levels in cumulus-oocyte complexes [abstract]. Biology of Reproduction. 85 (1 Supplement):205 (Abstract # 667).

Anti-angiogenic VEGFA164B isoform mRNA is more abundant in E2-inactive, atretic follicles while expression of angiogenic VEGFA isoforms is greater in granulosa cells from developing bovine follicles prior to the LH surge - (Abstract Only)

Mcfee, R., Artac, R., Pohlmeier, W., Kerl, J., Brauer, V., Cushman, R., Cupp, A. 2011. Anti-angiogenic VEGFA164B isoform mRNA is more abundant in E2-inactive, atretic follicles while expression of angiogenic VEGFA isoforms is greater in granulosa cells from developing bovine follicles prior to the LH surge [abstract]. Biology of Reproduction. 85 (1 Supplement):205 (Abstract # 668).

Rapid induction of gene expression in the corpus luteum following in vivo treatment with prostaglandin F2 alpha - (Abstract Only)

Davis, J.S., Hou, X., Maroni, D., Talbott, H., Fan, J., Guda, C., Yu, F., Cushman, R.A., Cupp, A.S. 2011. Rapid induction of gene expression in the corpus luteum following in vivo treatment with prostaglandin F2 alpha [abstract]. Biology of Reproduction. 85 (1 Supplement):111 (Abstract # 229).

Using ultrasonography to determine reproductive tract development in beef heifers - (Abstract Only)

Cushman, R.A., Kuehn, L.A., Thallman, R.M., Snelling, W.M., Freetly, H.C. 2011. Using ultrasonography to determine reproductive tract development in beef heifers [abstract]. Journal of Animal Science. 89 (E-Supplement 1):418-419 (Abstract #327).

Effects of protein supplementation during heifer development on reproductive characteristics and success in beef heifers - (Abstract Only)

Summers, A.F., Cushman, R.A., Weber, S.P., Spangler, M.L., Cupp, A.S. 2011. Effects of protein supplementation during heifer development on reproductive characteristics and success in beef heifers [abstract]. Journal of Animal Science. 89 (E-Supplement 1):91 (Abstract #M241).

Failure of differences in prepubertal dietary intake to affect ovarian development in pubertal beef heifers - (Abstract Only)

Echternkamp, S.E., Eborn, D.R., Cushman, R.A. 2011. Failure of differences in prepubertal dietary intake to affect ovarian development in pubertal beef heifers [abstract]. Journal of Animal Science. 89 (E-Supplement 1):93 (Abstract #M246).

How SNP chips will advance our knowledge of factors controlling puberty and aid in selecting replacement females - (Abstract Only)

Snelling, W.M., Cushman, R.A., Bennett, G.L., Keele, J.W., Kuehn, L.A., Mcdaneld, T.G., Thallman, R.M., Thomas, M.G. 2011. How SNP chips will advance our knowledge of factors controlling puberty and aid in selecting replacement females [abstract]. Journal of Animal Science Supplement. 89(E-Supplement 1):494. Abstract # 534.

Reproductive strategies to increase cow longevity - (Research Notes)

Cushman, R.A. 2011. Reproductive strategies to increase cow longevity. (New York Winter Beef Management Meeting Handout, Syracuse, January 22, 2011.) Cornell University, Department of Animal Science Teaching, Extension, Research. Mimeograph Series No. 250.

Impact of bull development on reproductive success - (Abstract Only)

Perry, G.A., Rupp, G.P., Cushman, R.A. 2011. Impact of bull development on reproductive success [abstract]. Journal of Animal Science. 89 (E-Supplement 2):65 (Abstract #52).

Piglet growth and blood components during lactation following reciprocal embryo transfer between Meishan and White crossbred gilts - (Abstract Only)

Miles, J.R., Vallet, J.L., Ford, J.J., Freking, B.A., Cushman, R.A., Oliver, W.T., Christenson, R.K. 2011. Piglet growth and blood components during lactation following reciprocal embryo transfer between Meishan and White crossbred gilts [abstract]. Reproduction, Fertility and Development. 23(1):177-178 (Abstract #148).

Using growth traits and adipose function to identify indicators of heifer fertility - (Abstract Only)

Cushman, R.A., Allan, M.F., Mcdaneld, T.G., Kuehn, L.A., Rempel, L.A., Lindholm-Perry, A.K., Snelling, W.M., Freetly, H.C. 2010. Using growth traits and adipose function to identify indicators of heifer fertility [abstract]. Proceedings of 8th International Ruminant Reproduction Symposium. p. 130 (Abstract # M43).

Follicle size and volume is less indicative of development of a persistent follicle in beef heifers - (Abstract Only)

Mcfee, R., Pohlmeier, W., Smith, J., Kerl, J., Slattery, R., Clopton, D., Wood, J., Cushman, R., Cupp, A. 2010. Follicle size and volume is less indicative of development of a persistent follicle in beef heifers [abstract]. Biology of Reproduction. 83 (Special Issue):139 (Abstract # 615).

Reproductive Tract Differences in Repeat-Breeder Cows - (Abstract Only)

Cushman, R.A., Miles, J.R., Echternkamp, S.E. 2010. Reproductive Tract Differences in Repeat-Breeder Cows [abstract]. Journal of Animal Science. 88 (E-Supplement 2):220. (Abstract #168).

Effect of Dietary Energy on Ovarian Development and Fertility in Postpuberal Beef Heifers - (Abstract Only)

Echternkamp, S.E., Cushman, R.A., Ferrell, C.L. 2010. Effect of Dietary Energy on Ovarian Development and Fertility in Postpuberal Beef Heifers [abstract]. Journal of Animal Science. 88 (E-Supplement 2):115. (Abstract #M300).

Size of Ovulatory Follicles in Cattle Expressing Multiple Ovulations Naturally and Its Influence on Corpus Luteum Development and Fertility - (Peer Reviewed Journal)

Echternkamp, S.E., Cushman, R.A., Allan, M.F. 2009. Size of Ovulatory Follicles in Cattle Expressing Multiple Ovulations Naturally and Its Influence on Corpus Luteum Development and Fertility. Journal of Animal Science. 87(11):3556-3568.

Influence of Reproductive Aging of the Cow on Luteal Function and Period 1 mRNA Expression - (Abstract Only)

Cushman, R.A., Echternkamp, S.E. 2009. Influence of Reproductive Aging of the Cow on Luteal Function and Period 1 mRNA Expression [abstract]. Biology of Reproduction. 2009 Supplement:156 (Abstract #478).

Association Between Preovulatory Concentrations of Estradiol and Expression of Uterine Milk Protein Precursor, Inhibin Beta A, Period 1, Proenkephalin, and Receptors for Oxytocin, Progesterone, and Estradiol - (Abstract Only)

Perry, G.A., Perry, B.L., Cushman, R.A. 2009. Association Between Preovulatory Concentrations of Estradiol and Expression of Uterine Milk Protein Precursor, Inhibin Beta A, Period 1, Proenkephalin, and Receptors for Oxytocin, Progesterone, and Estradiol [abstract]. Biology of Reproduction. 2009 Supplement:117 (Abstract #308).

Comparison of Two Protocols to Achieve Pregnancy to Fixed-Time Artificial Insemination (TAI) in Suckled Beef Cows - (Abstract Only)

Echternkamp, S.E., Hays, W.G., Jones, S., Cushman, R.A. 2009. Comparison of Two Protocols to Achieve Pregnancy to Fixed-Time Artificial Insemination (TAI) in Suckled Beef Cows [abstract]. Journal of Animal Science. 87 (E-Supplement 2):269 (Abstract # T228).

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)

Cushman, R.A., Allan, M.F., Kuehn, L.A., Snelling, W.M., Cupp, A.S., Freetly, H.C. 2009. 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. Journal of Animal Science. 87(6):1971-1980.

Development of Neonatal Piglets Following Reciprocal Embryo Transfers Between Meishan and White Crossbred Gilts - (Abstract Only)

Miles, J.R., Vallet, J.L., Ford, J.J., Freking, B.A., Cushman, R.A., Oliver, W.T., Christenson, R.K. 2009. Development of Neonatal Piglets Following Reciprocal Embryo Transfers Between Meishan and White Crossbred Gilts [abstract]. Proceedings of VIIIth International Conference on Pig Reproduction, Banff, Alberta, Canada, p. 148.

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 Only)

Slattery, R., Clopton, D., Wood, J., Cushman, R., Cupp, A. 2009. 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]. Journal of Animal Science. 87 (E-Supplement 3):66 (Abstract # 85).

Influence of Exogenous Progestin on Ovarian Function in Beef Cows - (Abstract Only)

Cushman, R.A., Wood, J.R., Echternkamp, S.E., Cupp, A.S. 2009. Influence of Exogenous Progestin on Ovarian Function in Beef Cows [abstract]. Journal of Animal Science. 87 (E-Supplement 3):113 (Abstract # 239).

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 Only)

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 Only)

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 Only)

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 Only)

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)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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 Only)

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.