D R Notter

Summary

Affiliation: Virginia Polytechnic Institute and State University
Country: USA

Publications

  1. doi request reprint Effects of birth-rearing type on weaning weights in meat sheep are systematically associated with differences in mean performance among flocks
    David R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, 24061, USA
    Genet Sel Evol 47:57. 2015
  2. doi request reprint Evaluation of Columbia, USMARC Composite, Suffolk, and Texel rams as terminal sires in an extensive rangeland production system: VII. Accuracy of ultrasound predictors and their association with carcass weight, yield, and value
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg 24061
    J Anim Sci 92:2402-14. 2014
  3. doi request reprint Genetic improvement of reproductive efficiency of sheep and goats
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
    Anim Reprod Sci 130:147-51. 2012
  4. doi request reprint Evaluation of Columbia, USMARC-Composite, Suffolk, and Texel rams as terminal sires in an extensive rangeland production system: II. Postweaning growth and ultrasonic measures of composition for lambs fed a high-energy feedlot diet
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg 24061, USA
    J Anim Sci 90:2941-52. 2012
  5. ncbi request reprint Nocturnal melatonin and prolactin plasma concentrations in sheep selected for fertility in autumn lambing'
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24060, USA
    J Anim Sci 79:2895-901. 2001
  6. doi request reprint Genetic aspects of reproduction in sheep
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
    Reprod Domest Anim 43:122-8. 2008
  7. ncbi request reprint Growth and carcass characteristics of lambs sired by Dorper and Dorset rams
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 82:1323-8. 2004
  8. ncbi request reprint Evaluation of melatonin receptor 1a as a candidate gene influencing reproduction in an autumn-lambing sheep flock
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 81:912-7. 2003
  9. pmc Opportunities for detection and use of QTL influencing seasonal reproduction in sheep: a review
    David R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
    Genet Sel Evol 37:S39-53. 2005
  10. doi request reprint Patterns of estrous cycles, estrous behavior, and circulating prolactin in spring and summer in ewes selected for autumn lambing and exposed to ambient or long-day photoperiods
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, USA
    Anim Reprod Sci 129:30-6. 2011

Collaborators

Detail Information

Publications29

  1. doi request reprint Effects of birth-rearing type on weaning weights in meat sheep are systematically associated with differences in mean performance among flocks
    David R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, 24061, USA
    Genet Sel Evol 47:57. 2015
    ..Thus, consistency of adjustment factors across flocks and systematic effects of the level of flock performance on these factors were evaluated using data from the US National Sheep Improvement Program...
  2. doi request reprint Evaluation of Columbia, USMARC Composite, Suffolk, and Texel rams as terminal sires in an extensive rangeland production system: VII. Accuracy of ultrasound predictors and their association with carcass weight, yield, and value
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg 24061
    J Anim Sci 92:2402-14. 2014
    ..4 to 12.2%. Measurements of CCW, LMA, BF, and BWall would thus be appropriate to support programs for value-based marketing of lamb carcasses and are superior to systems based only on measurements of size and shape in unribbed carcasses. ..
  3. doi request reprint Genetic improvement of reproductive efficiency of sheep and goats
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
    Anim Reprod Sci 130:147-51. 2012
    ..Comparable major genes have not yet been found in goats or for traits associated with breeding season...
  4. doi request reprint Evaluation of Columbia, USMARC-Composite, Suffolk, and Texel rams as terminal sires in an extensive rangeland production system: II. Postweaning growth and ultrasonic measures of composition for lambs fed a high-energy feedlot diet
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg 24061, USA
    J Anim Sci 90:2941-52. 2012
    ..1 mm, but inferior in LM area to Texel- and Composite-sired lambs at comparable BW...
  5. ncbi request reprint Nocturnal melatonin and prolactin plasma concentrations in sheep selected for fertility in autumn lambing'
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24060, USA
    J Anim Sci 79:2895-901. 2001
    ..43 (P < 0.02) for melatonin levels and 0.11 (P > 0.25) for prolactin levels. Thus, we conclude that selection for fertility in autumn lambing has affected patterns of melatonin and prolactin secretion during the dark phase...
  6. doi request reprint Genetic aspects of reproduction in sheep
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
    Reprod Domest Anim 43:122-8. 2008
    ..However, functional genomic studies of genes associated with circadian and circannual rhythms have potential to reveal additional candidate genes involved in seasonal breeding...
  7. ncbi request reprint Growth and carcass characteristics of lambs sired by Dorper and Dorset rams
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 82:1323-8. 2004
    ..Ultrasonic measurements of backfat thickness and LM area taken in live lambs before slaughter were positively associated with direct measures on chilled carcasses with correlations of 0.77 for backfat thickness and 0.51 for LM area...
  8. ncbi request reprint Evaluation of melatonin receptor 1a as a candidate gene influencing reproduction in an autumn-lambing sheep flock
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 81:912-7. 2003
    ..Fertility in autumn lambing is lowly heritable, expressed only in females, and manifested relatively late in life and only in some management systems. Access to genetic markers would thus be advantageous in selection programs...
  9. pmc Opportunities for detection and use of QTL influencing seasonal reproduction in sheep: a review
    David R Notter
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, USA
    Genet Sel Evol 37:S39-53. 2005
    ..Thus the various clock genes represent potentially important candidate genes that may be involved in control of seasonal breeding...
  10. doi request reprint Patterns of estrous cycles, estrous behavior, and circulating prolactin in spring and summer in ewes selected for autumn lambing and exposed to ambient or long-day photoperiods
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, USA
    Anim Reprod Sci 129:30-6. 2011
    ..Selection for ability to lamb in autumn thus resulted in ewes with an abbreviated seasonal anestrus and reduced sensitivity to long days...
  11. ncbi request reprint Inheritance of fecal egg count and packed cell volume and their relationship with production traits in sheep infected with Haemonchus contortus
    H B Vanimisetti
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 82:1602-11. 2004
    ..Selection for resistance to H. contortus is therefore possible and should not adversely affect growth of lambs and fertility of ewes in this production environment...
  12. doi request reprint Genetic analysis of ewe stayability and its association with lamb growth and adult production
    R C Borg
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 87:3515-24. 2009
    ..17, -0.32 (P < 0.05), and -0.03, respectively, indicating a possible small antagonism between STAY and genetic effects on body size...
  13. ncbi request reprint Breeding objectives for Targhee sheep
    R C Borg
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 85:2815-29. 2007
    ....
  14. doi request reprint Differences in immune parameters are associated with resistance to Haemonchus contortus in Caribbean hair sheep
    K M MacKinnon
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA, USA
    Parasite Immunol 32:484-93. 2010
    ..i. (P < 0.05). Serum IgE in infected lambs did not differ between breeds, but concentrations of IgE in lymph nodes were higher (P < 0.01) at 27 days p.i. in infected hair sheep...
  15. doi request reprint Validation of live animal ultrasonic measurements of body composition in market lambs
    J C Emenheiser
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
    J Anim Sci 88:2932-9. 2010
    ..Development of certification standards for US lamb ultrasound technicians based on results of this study and others is proposed...
  16. doi request reprint Phenotypic and genetic associations between lamb growth traits and adult ewe body weights in western range sheep
    R C Borg
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 87:3506-14. 2009
    ..05 to 0.95. Correlations of lamb traits with adult body condition and number of lambs born were generally not different from zero; genetic and residual correlations ranged from -0.52 to 0.69 and -0.39 to 0.31, respectively...
  17. doi request reprint Genetic evaluation of days to harvest in crossbred lambs
    G C Márquez
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg 24060
    J Anim Sci 91:5153-60. 2013
    ..Furthermore, DTH is moderately heritable. If economically justified within a breeding program, it could be reduced through genetic selection...
  18. doi request reprint Evaluation of Columbia, U.S. Meat Animal Research Center Composite, Suffolk, and Texel rams as terminal sires in an extensive rangeland production system: VI. Measurements of live-lamb and carcass shape and their relationship to carcass yield and value
    D R Notter
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg 24061
    J Anim Sci 92:1980-94. 2014
    ....
  19. ncbi request reprint Changes in connectedness over time in alternative sheep sire referencing schemes
    L A Kuehn
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 86:536-44. 2008
    ..10, approximately 20 and 10%, respectively, of the bias due to initial differences in flock genetic means remained. These levels of flock r(ij) are suggested as benchmark levels for minimizing the risk of comparing animal EBV among units...
  20. doi request reprint Connectedness in Targhee and Suffolk flocks participating in the United States National Sheep Improvement Program
    L A Kuehn
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 87:507-15. 2009
    ..10) but was near zero between clusters. Risk of bias in comparing EBV among flocks in the Targhee was low; however, caution should be exercised when comparing EBV between Suffolk flocks from different clusters...
  21. doi request reprint Microarray analysis reveals difference in gene expression profiles of hair and wool sheep infected with Haemonchus contortus
    K M MacKinnon
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, United States
    Vet Immunol Immunopathol 130:210-20. 2009
    ..Changes in these processes indicate Caribbean hair sheep have a stronger inflammatory response when infected with H. contortus which may facilitate the increased parasite resistance observed in these sheep...
  22. doi request reprint Longitudinal changes in ultrasonic measurements of body composition during growth in Suffolk ram lambs and evaluation of alternative adjustment strategies for ultrasonic scan data
    J C Emenheiser
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
    J Anim Sci 88:1341-8. 2010
    ..Therefore, it appears the linear and allometric forms are both suitable for use in central ram test and performance-tested farm flocks...
  23. ncbi request reprint Genetic (co)variance components for ewe productivity traits in Katahdin sheep
    H B Vanimisetti
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
    J Anim Sci 85:60-8. 2007
    ..Maternally superior ewes for WW appear to also be somewhat superior for NW...
  24. ncbi request reprint Assessing genetic gain, inbreeding, and bias attributable to different flock genetic means in alternative sheep sire referencing schemes
    L A Kuehn
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 86:526-35. 2008
    ..Natural service and noncontinuous SRS are viable options to continuous AI SRS in terms of genetic gain, inbreeding, and bias reduction...
  25. doi request reprint Use of ultrasound scanning and body condition score to evaluate composition traits in mature beef cows
    J C Emenheiser
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061
    J Anim Sci 92:3868-77. 2014
    ..However, animal differences define substantial variation in scan differences and, especially, prediction errors. Implications for technician certification, carcass pricing, and genetic evaluation are discussed. ..
  26. doi request reprint Fatty acid metabolism and deposition in subcutaneous adipose tissue of pasture- and feedlot-finished cattle
    J R Fincham
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA
    J Anim Sci 87:3259-77. 2009
    ..07) on d 28 and remained elevated (ranged from 0.64 to 0.80% of total fatty acids) throughout the study. It appears that only a short time is needed to alter the n-3 and CLA composition of adipose tissue in cattle finished on pasture...
  27. ncbi request reprint Performance of hair sheep composite breeds: resistance of lambs to Haemonchus contortus
    H B Vanimisetti
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg 24061, USA
    J Anim Sci 82:595-604. 2004
    ..They and the derivative Katahdin breed seem relatively resistant to parasitism. The Dorper, in contrast, was developed in more arid regions and exhibited little parasite resistance...
  28. doi request reprint Strategies for rapid rebreeding of lactating ewes in the spring
    K J Goff
    Department of Animal and Poultry Sciences, Virginia Tech, Blacksburg, VA 24061, USA
    Animal 8:968-74. 2014
    ..However, exposure of lactating OOS ewes to rams at 30 to 50 days postpartum was associated with high prenatal lamb mortality. ..
  29. pmc Managing the risk of comparing estimated breeding values across flocks or herds through connectedness: a review and application
    Larry A Kuehn
    Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA
    Genet Sel Evol 39:225-47. 2007
    ..However, this measure is difficult to calculate; correlated measures such as prediction errors of differences in unit means and correlations among prediction errors are suggested as practical alternatives...