SOW LONGEVITY LABORATORY
EVIDENCE BASED IMPROVEMENT OF HEALTH, WELL-BEING & PERFORMANCE
R. F. FITZGERALD, L. A. KARRIKER, A. K. JOHNSON, S. MILLMAN, AND K. J. STALDER
DEPARTMENT OF ANIMAL SCIENCE, VETERINARY DIAGNOSTIC AND PRODUCTION ANIMAL MEDICINE, IOWA STATE UNIVERSITY, AMES, IA 50011-3150
REFEREED JOURNAL ARTICLES
1. Stalder, K. J., R. C. Lacy, T. L. Cross, G. E. Conatser, and C. S. Darroch. 2000. Net present value analysis of sow longevity and the economic sensitivity of net present value to changes in production, market price, feed cost, and replacement gilt costs in a farrow-to-finish operation. Prof. Anim. Sci. 16:33-40.
2. Stalder, K. J., R. C. Lacy, T. L. Cross, and G. E. Conatser. 2003. Financial impact of average parity of culled females in a breed-to-wean swine operation using replacement gilt net present value analysis. Swine Health Prod. 11:69-74.
3. Serenius, T., and K. J. Stalder. 2004. Genetics of length of productive life and lifetime prolificacy in the Finnish Landrace and Large White pig populations. J. Anim. Sci. 82:3111-3117.
4. Stalder, K. J., M. Knauer, T. J. Baas, M. F. Rothschild, and J. W. Mabry. 2004. Sow Longevity. Pig News and Information. 25:53N-74N.
5. Ehlers, M. J., J. W. Mabry, J. K. Bertrand, and K. J. Stalder. 2005. Variance components and heritabilities for sow productivity traits estimated from purebred versus crossbred sows. J. Anim. Breed. Genet. 122:318-324.
6. Stalder, K. J., A. M. Saxton, G. E. Conatser, and T. V. Serenius. 2005. Effect of growth and compositional traits on first parity and lifetime reproductive performance in U.S. Landrace swine. Livest. Prod. Sci. 97:151-159.
7. Serenius, T., K. J. Stalder, and M. Pounti. 2006. Impact of dominance effects on sow longevity. J. Anim. Breed. Genet. 123:355-361.
8. Serenius, T., K. J. Stalder, T. J. Baas, J. W. Mabry, R. N. Goodwin, R. K. Johnson, O. W. Robison, M. Tokach, and R. K. Miller. 2006. National Pork Producers Council Maternal Line National Genetic Evaluation Program: A comparison of sow longevity and trait associations with sow longevity. J. Anim. Sci. 84:2590-2595.
9. Ehlers, M. J., J. W. Mabry, J. K. Bertrand, and K. J. Stalder. 2006. Breeding values, accuracies, and rank changes using purebred and combined purebred and crossbred information in swine. Prof. Anim. Sci. 22:183-188.
10. Serenius, T., and K. J. Stalder. 2006. Review: Selection for sow longevity. J. Anim. Sci. 84(E. Suppl.):E166-E171.
11. Serenius, T., P. Muhonen, and K. Stalder. 2007. Economic values of pork production related traits in Finland. Agric. Food Sci. 16:79-88.
12. Knauer, M., K. J. Stalder, L. Karriker, T. J. Baas, C. Johnson, T. Serenius, L. Layman, and J. D. McKean. 2007. A descriptive survey of lesions from cull sows harvested at two Midwestern U.S. facilities. Prev. Vet. Med. 82:198-212.
13. Knauer, M., L. A. Karriker, T. J. Baas, C. Johnson, and K. J. Stalder. 2007. An evaluation of the precision of farm reported data used to make health decisions about sows. J. Am. Vet. Med. Assoc. 231:433-436.
14. Serenius, T., and K. J. Stalder. 2007. Longevity is impacted by farm management, leg conformation, sow’s own prolificacy, and sow’s origin parity and genetics. Anim. 1:745-750.
15. Fitzgerald, R., K. Stalder, L. Karriker, C. Johnson, L. Layman, A. Johnson. 2008. Developing and utilizing visual tools to assist pork producers in employee training in the evaluation of sow body condition. J. Ext. 46:2T0T7
16. Fitzgerald, R. F., K. J. Stalder, C. D. Johnson, L. Layman, and L. Karriker. 2008. An economic analysis of feeding cull sows. Prof. Anim. Sci. 24:355-362.
17. Serenius, T., K. Stalder, and R. Fernando. 2008. Genetic associations of sow longevity with age at first farrowing, number of piglets weaned and wean to insemination interval in the Finnish Landrace swine population. J. Anim. Sci. 86:3324-3329.
18. Stalder, K. J., D. Miller, C. Johnson, M. Boggess, L. Karriker, and A. Johnson. 2008. Cooperative effort leads to the development of tools to assist pork producers in evaluating structural soundness of replacement gilts. J. Exten. 46:IAW4.
19. Onteru, S. K., B. Mote, T. Serenius, M. Nikkilae, K. J. Stalder, M. F. Rothschild. 2008. SNP discovery in genes affecting leg health traits in pigs. Pinard M-H, Gay C, Pastoret P-P, Dodet B (Eds): Animal Genomics for Animal Health. Dev. Biol. (Basel). Basel, Karger, 132: 337-342.
20. Mote, B. E., J. W. Mabry, K. J. Stalder, and M. F. Rothschild. 2009. Evaluation of current reasons for removal of sows from commercial farms. Prof. Anim. Sci. 25:1-7.
21. Fan, B., S. K. Onteru, B. E. Mote, T. Serenius, K. J. Stalder, and M. F. Rothschild. 2009. Large-scale association study for structural soundness and leg locomotion traits in the pig. Gen. Sel. Evol. 41:14.
22. Fan, B., S. K. Onteru, M. T. Nikkilä, K.J. Stalder, and M. F. Rothschild. 2009. The COL9A1 gene is associated with longissimus dorsi muscle area in the pig. Anim. Gene. (Accepted).
23. Mote, B. E., K. J. Koehler, J. W. Mabry, K. J. Stalder, and M. F. Rothschild. 2009. Identification of genetic markers for productive life in commercial sows. J. Anim. Sci. (Accepted).
24. Fitzgerald, R. F., K. J. Stalder, P. M. Dixon, A. K. Johnson, L. Karriker, and G. F. Jones. 2009. The accuracy and repeatability of sow body condition scoring. Prof. Anim. Sci. (Accepted).
PEER REVIEWED BOOK CHAPTERS AND EXTENSION PUBLICATIONS
1. Stalder, K. J., T. S. Stewart, and R. A. Kemp. 1999. Performance records on relatives. In: National Swine Improvement Federation Swine Genetics Handbook. Purdue University Cooperative Extension Service, West Lafayette, IN 47907.
2. Stalder, K. J., and A. M. Saxton. 2004. More estimation of genetic parameters. In: Genetic Analysis of Complex Traits Using SAS. A. M. Saxton Ed. SAS Publishing, SAS Institute, Inc. Cary, NC 27513.
3. Moeller, S. J., and K. J. Stalder. 2004. Genetic aspects of female longevity. National Pork Board Reference Manual. National Pork Board, Clive, IA. Fact Sheet, National Pork Board, West Des Moines, IA, 50306.
4. Stalder, K. J., and A. Johnson. 2004. Environmental factors influencing sow longevity. National Pork Board Reference Manual. National Pork Board, Clive, IA. Fact Sheet. National Pork Board, West Des Moines, IA, 50306.
PEER REVIEWED PAPERS IN SCIENTIFIC MEETING PROCEEDINGS
1. Serenius, T., K. J. Stalder, and R. L. Fernando. 2006. Genetic associations of length of productive life with age at first farrowing and leg soundness score in Finnish Landrace population. 8th World Cong. Gene. Appl. Livest. Prod. Belle Horizonte, Brazil, August 13-18, 2006. Nº 06-08.
2. Mote, B. E., T. Serenius, K. J. Stalder, and M. F. Rothschild. 2006. The holy grail for pigs: Candidate genes affecting sow productive life. 8th World Cong. Gene. Appl. Livest. Prod. Belle Horizonte, Brazil, August 13-18, 2006. Nº 22-22.
NON-PEER REVIEWED EXTENSION PUBLICATIONS
1. Lacy, C. K. Stalder, T. Cross, and G. Conatser. 2001. Breeding herd replacement female evaluator. The University of Tennessee Agriculture Extension Service. http://www.agriculture.utk.edu/ansci/swine/gilt_replacement.htm
CONFERENCE PROCEEDINGS
1. Stalder, K. J., R. C. Lacy, T. L. Cross, and G. E. Conatser. 1999. How Old is Old Enough? The value of longevity in the sow herd. Proc. 10th Ann. STAGES Roundtable Mtg. University Inn, West Lafayette, IN, March 25. pp. 27-34.
2. Stalder, K. J., and R. C. Lacy. 2000. Breeding herd female calculator: An economic assessment tool for swine producers. In: Proc. of Fin. Mgmt. Conf. National Pork Producers Council, Des Moines, IA. pp. 117-130.
3. Stalder, K. J., and R. N. Goodwin. 2000. Gilt development – Importance of gilt growth rate on lifetime performance. In: Genetic Evaluation – Maternal Line Program Results. National Pork Producers Council, Des Moines, IA. April 19-20. pp. 161-177.
4. Lacy, R. C., K. J. Stalder, R. D. Little, and A. J. Allen. 2000. Net present value analysis of replacement female of purchasing decisions in segregated early weaning pork production systems. Proc. 27th Ann. Meeting of the Acad. of Econ. Fin. Nashville, TN, February 9-12.
5. Stalder, K. J., A. M. Saxton, and G. E. Conatser. 2001. Correlation of First Parity and Lifetime Reproductive Performance to Growth and Compositional Traits in Purebred Yorkshire and Landrace Females. Proc. 12th Ann. STAGES Roundtable Mtg. University Inn, West Lafayette, IN. March 24. pp. 18-27.
6. Stalder, K. J., T. V. Serenius, S. J. Moeller, M. Knauer, T. J. Baas, J. W. Mabry, M. F. Rothschild, and B. E. Mote. 2004. Genetic factors impacting sow longevity. Record of 29th Proc. National Swine Imprv. Fed. Conf. Ann. Mtg. Ames, IA. Dec. 9-10. pp. 106-113.
7. Stalder, K. J., T. J. Baas, M. T. Knauer, J. W. Mabry, and T. V. Serenius. 2004. Economic evaluation of gilt retention. Proc. A. D. Leman Swine Conference Pre-Conference Workshop. CD-ROM.
8. Stalder, K. J., and A. Johnson. 2004. Environmental factors influencing sow longevity. 2004 Pork Academy Conference Proc. CD-ROM. National Pork Board, Clive, IA.
9. Moeller, S. J., and K. J. Stalder. 2004. Genetic aspects of female longevity. 2004 Pork Academy Conference Proc. CD-ROM. National Pork Board, Clive, IA.
10. Knauer, M, T. Serenius, K. J. Stalder, T. J. Baas, J. W. Mabry, and R. N. Goodwin. 2005. Traits associated with sow stayability. Proc. 56th Ann. Mtg. Eurp. Assoc. Anim. Prod., Uppsala, Sweden. June 5-8, 2005, Session P2.2. Available on line at: http://www.eaap.org/uppsala/AA_pages/P2_session_08.htm
11. Stalder, K. J., T. Serenius, T. J. Baas, J. W. Mabry, and R. N. Goodwin. 2005. Analysis of true sow longevity. Proc. 56th Ann. Mtg. Eurp. Assoc. Anim. Prod., Uppsala, Sweden. June 5-8, 2005, Session P2.3. Available on line at: http://www.eaap.org/uppsala/AA_pages/P2_session_08.htm
12. Serenius, T., K. J. Stalder. 2005. Estimates of additive and dominance genetic effects for sow longevity. Proc. 56th Ann. Mtg. Eurp. Assoc. Anim. Prod., Uppsala, Sweden. June 5-8, 2005, Session P2.4. Available on line at: http://www.eaap.org/uppsala/AA_pages/P2_session_08.htm
13. Stalder, K. J., M. F. Rothschild, T. J. Baas, N. Berry, and T. V. Serenius. 2005. Genetics of feet and leg soundness. 2005 Pork Academy Conference Proc. CD-ROM. National Pork Board, Clive, IA.
14. Mote, B. E., K. J. Stalder, and M. F. Rothschild. 2006. Candidate genes associated with sow longevity. Record of 31st Proc. National Swine Imprv. Fed. Conf. Ann. Mtg. Nashville, TN, Dec. 6-7. Available at: http://www.nsif.com/Conferences/2006/pdf/CandidateGenes.pdf.
15. Knauer, M. T., K. Stalder, T. J. Baas, and L. A. Karriker. 2006. Evaluation of U.S. cull sows. Record of 31st Proc. National Swine Imprv. Fed. Conf. Ann. Mtg. Nashville, TN. Dec. 6-7. Available at: http://www.nsif.com/Conferences/2006/pdf/FactorsInfluencingSowCulling.pdf
16. Baas, T. J., and K. J. Stalder. 2006. Structural soundness: Selection criteria. Proc. Fourteenth Annual Swine Disease Conference for Practitioners. Iowa State University, Ames, IA.
17. Karriker, L. A., and K. J. Stalder. 2006. Breeding herd lameness: Classifications and clinical diagnosis. Proc. Fourteenth Annual Swine Disease Conference for Practitioners. Iowa State University, Ames, IA.
18. Stalder, K., M. Knauer, T. Serenius, L. Karriker, B. Mote, J. McKean, T. Baas, and J. Mabry. 2006. Sow Longevity – What We Know. Proc. Fourteenth Annual Swine Disease Conference for Practitioners. Iowa State University, Ames, IA.
19. Stalder, K., R. Fitzgerald, C. Johnson, and L. Karriker. 2006. Feeding Cull Sows: When is it a money making proposition? 2006 Pork Academy Proc. CD-ROM, National Pork Board, Clive, IA.
20. Karriker, L.A. and K. J. Stalder. 2006. Culling criteria for sows and gilts. 2006 Pork Academy Proc. CD-ROM, National Pork Board, Clive, IA.
21. Stalder, K., and T. Serenius. 2006. Breeding objectives in the U.S.: Double your dollars. In: Pig Breeder’s Symposium. FABA Breeding. Rantiasipi Eden, Nokia, Finland. pp. 13-16.
22. Serenius, T., and K. Stalder. 2006. Prolific sow produces lots of pigs frequently. In: Pig Breeder’s Symposium. FABA Breeding. Rantiasipi Eden, Nokia, Finland. pp. 17-19.
23. Stalder, K. J., R. F. Fitzgerald, A. K. Johnson, L. A. Karriker, and D. Meisinger. 2007. A summary of the 13th Discover Conference on sow productive lifetime. Record of 32nd Proc. National Swine Imprv. Fed. Conf. Ann. Mtg. Kansas City, MO. Dec. 6-7.
24. Onteru, S. K., B. Fan, B. Mote, T. Serenius, M. Nikkilae, K. J. Stalder , M. F. Rothschild. 2007. SNP discovery in genes affecting leg health traits in pigs. Pinard M-H, Gay C, Pastoret P-P, Dodet B (Eds.): Animal Genomics for Animal Health. Dev. Biol. (Basel). Basel, Karger, 2008, vol 132, p 337-342.
25. Stalder, K. J., L. Karriker, T. Serenius, and M. Knauer. 2007. Influencing length of productive life of the sow herd. Proc. Amer. Assoc. Swine Vet. Annul. Conf., Reproduction: Optimizing genetics, health and production Supplement, Orlando, FL. March 3-6, pp. 13- 17.
26. Stalder, K. J., L. Karriker, T. Serenius, and M. T. Knauer. 2007. Factors influencing sow longevity. Proc. Iowa Veterinary Medical Association Winter Conference, Ames, IA. Feb. 7-8, pp. 115-134.
27. Bowden, J. M., A. K. Johnson, K. J. Stalder, and L. A. Karriker. 2008. Behavioral Validation for Nursery Pigs. American Association of Swine Veterinarians. March 8-11, 2008. San Diego, California. pp 327-328.
28. Edler, R. A., J. T. Holck, L. J. Sadler, J. R. Garvey, T. J. Uhlenkamp, C. J. Jackson, K. J. Stalder, L. A. Karriker and A. K. Johnson. 2008. Drinker to Nursery Pigs ratio: Effects on Drinking Behavior and Performance. Proceedings of the first North American welfare and epidemiology conference: Across species, across disciplines and across borders. Held July 14th to 16th Ames, Iowa p 31.
29. Fitzgerald, R., K. J. Stalder, L. Karriker, and A. Johnson. 2008. Sow Longevity – Impact of hoof abnormalities on Lactation Performance and Behavior. Record of 33st Proc. National Swine Imprv. Fed. Conf. Ann. Mtg. Nashville, TN, Dec. 4-5.
30. Karriker L, K. Stalder K, A. Johnson, and L. Layman. Session 5536: Lesions compromising sow longevity. Invited. Conference Notes CD of the 145th American Veterinary Medical Association Meeting. July 19-22, 2008. New Orleans, Louisiana
31. Nikkilä M., K. Stalder, B. Mote, J. Lampe, B. Thorn, M. Rothschild, A. Johnson, L. Karriker, and T. Serenius. 2008. Associations of structural soundness traits with the ability of commercial sows to complete three parities. Record of 33st Proc. National Swine Imprv. Fed. Conf. Ann. Mtg. Nashville, TN, Dec. 4-5.
32. Stalder, K. J., A. K. Johnson, and L. A. Karriker. 2008. Early exit from the herd: Economic implications. Feet First Symposium, Zinpro Corp., Minneapolis, MN. April, 2008. Available on CD-ROM.
33. Stalder, K. J., A. K. Johnson, and L. A. Karriker. 2008. Understanding sow longevity and mortality. Proc. Amer. Assoc. Swine Vet. Ann. Conf. San Diego, CA. March, 2008. pp. 531-538.
34. Stalder, K. J., L. A. Karriker, A. K. Johnson, M. F. Rothschild, and T. Serenius. 2008. Sow Longevity: Genetic and phenotypic selection considerations. Proc. Amer. Assoc. Swine Vet. Annual Conf. – Reproduction Workshop. San Diego, CA. March, 2008. pp. 33-39.
35. Stalder, K. J., R. C. Lacy, R. F. Fitzgerald, M. T. Nikkilä, A. K. Johnson, and L. A. Karriker. 2008. Implicacoes economicas do descarte de porcas. In: Problemas Locomotores: Aspectos clinicos e economicos. DSM Nutritional Products, Basel, Switzerland.
36. Stalder, K. J., T. Serenius, M. Nikkilä, and R. F. Fitzgerald. 2008. Genetic evaluation of longevity traits. Record of 33st Proc. National Swine Imprv. Fed. Conf. Ann. Mtg. Nashville, TN, Dec. 4-5.
37. Stalder, K., L. Karriker, A. Johnson, and M. Nikkilä. 2009. Sire impacts on sow longevity in commercial breeding herds. In: Pre-Conference Seminar #10: Boar Studs: Disease updates and tools to reduce cost. Proc. Amer. Assoc. Swine Vet. pp. 9-18.
SOFTWARE DEVELOPED
1. Lacy, R. C., and K. J. Stalder. 2000. Sow Longevity Calculator Ver. 1.0: Farrow-to-Finish. University of Tennessee Extension Service. University of Tennessee, Knoxville, TN, 37996.
2. Lacy, R. C., and K. J. Stalder. 2000. Sow Longevity Calculator Ver. 1.0: Breed-to-Wean. University of Tennessee Extension Service. University of Tennessee, Knoxville, TN, 37996.
3. Dahlke, G., and K. J. Stalder. 2004. Manure Nutrient Value Calculator Ver. 1.0. Department of Animal Science. Iowa State University, Ames, IA, 50011.
4. Lacy, R. C., and K. J. Stalder. 2004. Sow Longevity Calculator Ver. 2.0: Farrow-to-Finish. Available in Metric and English unit measures. Available at: http://www.extension.iastate.edu/ipic/information/FFSLv2.html
5. Lacy, R. C., and K. J. Stalder. 2004. Sow Longevity Calculator Ver. 2.0: Breed-to-Wean. Available in Metric and English unit measures. Available at: http://www.extension.iastate.edu/ipic/information/BWSLv2.html
6. Dahlke, G., and K. J. Stalder. 2005. Swine Budget and Cash Flow Spreadsheet. Ver 1.0. Department of Animal Science, Iowa State University, Ames, IA, 50011.
EDUCATIONAL TOOLS
1. Stalder, K. J., T. J. Baas, S. J. Moeller, M. Brumm, W. Singleton, D. Levis, L. J. Johnston, R. Goodband, M. Tokach, W. Marsh, D. Mold, G. Thome, and J. Murray. 2002. Trouble Shooting Guide to the National Pork Database Benchmarks. National Pork Board, Des Moines, IA.
2. Stalder, K. J., T. J. Baas, S. J. Moeller, M. Brumm, W. Singleton, D. Levis, L. J. Johnston, R. Goodband, M. Tokach, W. Marsh, D. Mold, G. Thome, and J. Murray. 2004. Trouble Shooting Guide to the National Pork Database Benchmarks V 2.0. National Pork Board, Des Moines, IA.
3. Stalder, K. J., D. P. Miller, C. Johnson, T. J. Baas, N. Berry, D. West, and A. E. Christian. 2005. Reproductive trait selection guidelines poster. National Pork Board, Des Moines, IA.
4. Stalder, K. J., D. P. Miller, C. Johnson, T. J. Baas, N. Berry, D. West, and A. E. Christian. 2005. Feet and leg disorders poster. National Pork Board, Des Moines, IA.
5. Stalder, K. J., D. P. Miller, C. Johnson, T. J. Baas, N. Berry, D. West, and A. E. Christian. 2005. Conformation, structural soundness guidelines poster. National Pork Board, Des Moines, IA.
6. Stalder, K. J., C. Johnson, D. P. Miller, T. J. Baas, A. E. Christian, N. Berry, and T. V. Serenius. 2005. Pocket guide to structural, feet and leg, and reproductive soundness. National Pork Board, Des Moines, IA.
7. Karriker, L., L. Layman, A. Ramirez, D. Miller, K. Stalder, P. Holden, and A. DeMirjyn. 2006. Sow body condition scoring guidelines poster In: National Hog Farmer blueprint. No. 42 in a series. National Hog Farmer. Prism Business Media. Overland Park, KS 66212-2216. 51: Insert.
8. Stalder, K. J., T. Serenius, A. Peltonen, D. Wolf, and D. Miller. 2007. Karsi ja valitse ensikot oikein (Finnish translation of the reproductive and structural soundness posters for pigs). Sika (Pork magazine) Faba Breeding, Vantaa, Finland.
9. Stalder, K. J., D. P. Miller, and L. A. Karriker. 2008. Chinese version of the Conformation, structural soundness guidelines poster. Insert In: Pigs Today, Beijing, China.
10. Stalder, K. J., D. P. Miller, and L. A. Karriker. 2008. Chinese version of the Feet and leg disorders poster. Insert In: Pigs Today, Beijing, China.
11. Stalder, K. J., D. P. Miller, and L. A. Karriker. 2008. Chinese version of the Reproductive trait selection guidelines poster. Insert In: Pigs Today, Beijing, China.
12. Stalder, K. J., D. P. Miller, and L. A. Karriker. 2008. Chinese version of the Sow body condition scoring guidelines poster. Insert In: Pigs Today, Beijing, China.
RESEARCH REPORTS AND TECHNICAL BULLETINS
1. Long, T., A. Ruiz-Flores, K. Stalder, R. Goodwin, and W. Stroup. 1998. The effects of genetic line and diet regime on attainment of puberty in gilts. 1998 University of Nebraska Swine Research Report. University of Nebraska, Lincoln, NE. pp. 8-9.
2. Stalder, K. J., R. C. Lacy, T. L. Cross, and G. E. Conatser. 2001. A software tool to evaluate the economic impact of sow longevity in commercial swine operations. Department of Animal Science Report. Department of Animal Science, University of Tennessee, Knoxville, TN 37996.
3. Stalder, K. J., A. M. Saxton, and G. E. Conatser. 2001. Growth and compositional effects on sow productivity traits in purebred Landrace swine. Department of Animal Science Report. Department of Animal Science, University of Tennessee, Knoxville, TN 37996.
4. Wyatt, R. L., K. J. Stalder, T. E. Long, R. N. Goodwin, and J. H. Halstead. 2001. Effect of development diet regimen on the reproductive performance of gilts. Department of Animal Science Report. University of Tennessee Animal Science Department, Knoxville, TN 37996.
5. Stalder, K. J., P. J. Boettcher, A. M. Saxton, and A. Stella. 2003. Evidence of genes that are genetically imprinted controlling number born alive in Landrace swine. Department of Animal Science Report. Department of Animal Science, University of Tennessee, Knoxville, TN 37996.
6. Stalder, K. J., R. C. Lacy, T. L. Cross, and G. E. Conatser. 2003. Financial importance of sow longevity in a breed-to-wean swine operation. Department of Animal Science Report. Department of Animal Science, University of Tennessee, Knoxville, TN 37996.
7. Serenius, T., K. J. Stalder, T. J. Baas, J. W. Mabry, and R. N. Goodwin. 2005. A comparison of six maternal genetic lines for sow productivity. Animal Industry Report. Iowa State University, Ames, IA 50011.
8. Serenius, T., K. J. Stalder, T. J. Baas, and J. W. Mabry. 2005. Genetics of sow longevity. Animal Industry Report. Iowa State University, Ames, IA 50011.
9. Serenius, T., and K. J. Stalder. 2006. Estimates of additive and dominance effects for sow longevity. Animal Industry Report. Iowa State University, Ames, IA 50011.
10. Bowden, J. M., L. A. Karriker, K. J. Stalder, and A. K. Johnson. 2007. Scan Sampling Techniques for Behavioral Validation in Nursery Pigs. Animal Industry Report. A. S. R2342.
11. Fitzgerald, R. F., K. J. Stalder, L. Karriker, C. Johnson, and L. L. Layman. 2007. The economic analysis of feeding cull sows to heavier weights. Animal Industry Report. Iowa State University, Ames, IA 50011.
12. Goldsmith, C., A. Johnson, K. Stalder, M. Honeyman and L. Karriker. 2007. Removal of Sub-Therapeutic Antibiotics from Nursery Pigs Diets: Influence on Behavior, Performance and Physiology. Animal Industry Report. A. S. R2341.
13. Jackson, C. J., L. A. Karriker, K. J. Stalder, and A. K. Johnson. 2007. Drinking behavior of seven week old pigs when water is either withheld or provided ad libitum. Animal Industry Report. A. S. R2336.
14. Johnson, A., L. Layman, L. Karriker, W. Holt, K. Stalder, and B. De Rodas. 2007. How does the addition of gel at the time of vaccination affect overall nursery pig performance? Animal Industry Report. A. S. R2358.
15. Knauer, M., K. J. Stalder, L. Karriker, J. D. McKean, T. Serenius, T. J. Baas, C. Johnson, and L. Layman. 2007. Characterization of U.S. cull sows. Animal Industry Report. Iowa State University, Ames, IA 50011.
16. Knauer, M., K. J. Stalder, T. Serenius, T. J. Baas, P. J. Berger, R. N. Goodwin, and J. W. Mabry. 2007. Factors associated with sow stayability. Animal Industry Report. Iowa State University, Ames, IA 50011.
17. Mote, B. E., K. J. Stalder, and M. F. Rothschild. 2007. Understanding the genetic mechanisms controlling sow longevity. Animal Industry Report. Iowa State University, Ames, IA 50011.
18. Sadler, L. J., J. R. Garvey, T. J. Uhlenkamp, C. J. Jackson, K. J. Stalder, A. K. Johnson, L. A. Karriker. R. A. Edler, T. J. Holck. 2007. Drinker to Nursery Pigs ratio: Effects on Drinking Behavior and Performance. Animal Industry Report. A.S. R2335.
19. Saxton, A. M., K. J. Stalder, R. B. Simpson. 2007. Angus cow longevity estimates and relationship to production traits. Department of Animal Science Report. Department of Animal Science, University of Tennessee, Knoxville, TN 37996.
20. Mote, B. E., K. J. Stalder, and M. F. Rothschild. 2008. Reproduction, culling, and mortality levels on current commercial sow farms. Animal Industry Report. Iowa State University, Ames, IA 50011.
21. Onteru, S. K., B. Fan, B. Mote, T. Serenius, M. Nikkilae, K. J. Stalder, and M. F. Rothschild. 2008. Determination of genes associated with leg and body conformation traits in pigs. Animal Industry Report. Iowa State University, Ames, IA 50011.
22. Nikkilä, M., K. Stalder, B. Mote, J. Lampe, B. Thorn, M. F. Rothschild, A. Johnson, L. Karriker, and T. Serenius. 2008. Heritabilities and genetic correlations of body composition and structural soundness traits in commercial gilts. Animal Industry Report. Iowa State University, Ames, IA 50011.
23. Nikkilä, M., K. Stalder, B. Mote, J. Lampe, B. Thorn, M. Rothschild, A. Johnson, L. Karriker, and T. Serenius. 2009. Associations between body and leg structure traits in gilts. Animal Industry Report. Iowa State University, Ames, IA 50011.
24. Fan, B., S. K. Onteru, M. Nikkilä, K. J. Stalder, and M. F. Rothschild. 2009. Identification of genetic markers associated with sow reproductive and longevity traits. Animal Industry Report. Iowa State University, Ames, IA 50011.
25. Nikkilä, M., K. Stalder, B. Mote, J. Lampe, B. Thorn, M. Rothschild, A. Johnson, L. Karriker, and T. Serenius. 2009. Impact of Gilts Body Composition and Body Structure on Reproductive Performance. Animal Industry Report. Iowa State University, Ames, IA 50011.
ABSTRACTS PRESENTED AT INTERNATIONAL, NATIONAL, AND REGIONAL MEETINGS
1. Stalder, K. J., T. E. Long, R. N. Goodwin, J. M. Anderson, R. L. Wyatt, and J. H. Halstead. 1998 (Abstr.). Effect of gilt development diet on maternal traits of primiparous sows. J. Anim. Sci. 76(Suppl. 2):51.
2. Long, T. E., K. J. Stalder, R. N. Goodwin, J. H. Halstead, J. M. Anderson, and R. L. Wyatt. 1998 (Abstr.). Effect of gilt development diet on stayability to fourth parity in sows. J. Anim. Sci. 76(Suppl. 2):52.
3. Stalder, K. J., R. C. Lacy, T. L. Cross, and G. E. Conatser. 1999 (Abstr.). Economic analysis of commercial swine breeding herd replacement rates. J. Anim. Sci. 77(Suppl. 1):42.
4. Serenius, T., and K. J. Stalder. 2005 (Abstr.). Estimates of additive and dominance genetic effects for sow longevity. Book of Abstracts of the 56th Annual Mtg. Erpn. Assoc. Anim. Prod. Stockholm, Sweden, June 5-8, 2005. pp. 75.
5. Serenius, T. V., K. J. Stalder, T. J. Baas, J. W. Mabry, and R. N. Goodwin. 2005 (Abstr.). Analysis of true sow longevity. Book of Abstracts of the 56th Annual Mtg. Erpn. Assoc. Anim. Prod. Stockholm, Sweden, June 5-8, 2005. pp. 75.
6. Knauer, M., T. Serenius, K. J. Stalder, T. J. Baas, J. W. Mabry, and R. N. Goodwin. 2005 (Abstr.). Traits associated with sow stayability. Book of Abstracts of the 56th Annual Mtg. Erpn. Assoc. Anim. Prod. Stockholm, Sweden, June 5-8, 2005. pp. 74.
7. Serenius, T., K. J. Stalder, T. J. Baas, J. W. Mabry, and R. N. Goodwin. 2005 (Abstr.). A comparison of six maternal genetic lines for sow longevity. J. Anim. Sci. 83(Suppl. 2):53.
8. Stalder, K. J., T. V. Serenius, M. T. Knauer, B. E. Mote, T. J. Baas, and J. W. Mabry. 2005 (Abstr.). Review of factors influencing sow longevity. J. Anim. Sci. 83(Suppl. 2):50.
9. Stalder, K. J., M. Knauer, L. Karriker, T. J. Baas, C. Johnson, T. Serenius, L. Layman, J. W. Mabry, and J. D. McKean. 2006 (Abstr). Characterization of Cull Sows Harvested In the U.S. A. D. Leman Swine Conference Pre-Conference Workshop, Minneapolis, MN. September, 2006.
10. Fitzgerald, R., K. J. Stalder, L. Karriker, M. Knauer, C. Johnson, T. J. Baas, L. Layman, and J. W. Mabry. 2006 (Abstr). Performance and Economic Evaluation of Feeding Cull Sows. A. D. Leman Swine Conference Pre-Conference Workshop, Minneapolis, MN. September, 2006.
11. Serenius, T., T. J. Baas, and K. J. Stalder. 2006 (Abstr.). Additive and dominance genetic effects on sow longevity. J. Anim. Sci. 84(Suppl. 2):109.
12. Fitzgerald, R. F., K. J. Stalder, L. Karriker, C. J. Johnson, L. Layman, T. J. Baas, and J. W. Mabry. 2007 (Abstr.). The economic analysis of feeding cull sows to heavier weights. J. Anim. Sci. 85(Suppl. 1):139.
13. Goldsmith, C., L. Sadler, K. Stalder, L. Karriker, M. Honeyman and A. K. Johnson. 2007. Removal of sub-therapeutic antibiotics from nursery pigs diets: influence on behavior, performance and physiology. Journal of Animal Science. 86(1): 127.
14. Bowden, J. M., A. K. Johnson, K. J. Stalder, and L. A. Karriker. 2008. Behavioral Validation for Nursery Pigs. Journal of Animal Science. 86(E3):4.
15. Bowden, J. M., Karriker, L. A., K. J. Stalder, and A. K. Johnson. 2008. Scan sampling techniques for behavioral validation in nursery pigs. American Association of Swine Veterinarians. San Diego March 2008
16. Fan, B., S. K. Onteru, B. E. Mote, T. Serenius, M. T. Nikkilä, K. J. Stalder, M. F. Rothschild. 2008. Association of genes affecting skeletal design and feet and leg soundness in pigs. Proc. Plant and Animal Genome XVI, San Diego, CA, January 12,
17. Fan, B., S. Onteru, B. Mote, T. Serenius, M. Nikkilä, K. J. Stalder, and M. F. Rothschild. 2008 (Abstr.). Association of gene markers affecting the principal components of skeletal design and feet and leg soundness in pigs. J. Anim. Sci. 86(E-Suppl. 2):295.
18. Onteru, S. K., B. Fan, B. Mote, T. Serenius, M. Nikkilae, K. J. Stalder, and M. F. Rothschild. 2008 (Abstr.). Association of candidate genes to leg and body conformation traits in pigs. J. Anim. Sci. 86(E-Suppl. 3):47.
19. Nikkilä, M., K. Stalder, B. Mote, J. Lampe, B. Thorn, M. Rothschild, A. Johnson, L. Karriker, and T. Serenius. 2008 (Abstr.). Heritability estimates for structural soundness traits in commercial gilts. J. Anim. Sci. 86(E-Suppl. 3):47.
20. Nikkilä, M, K. Stalder, B. Mote, J. Lampe, B. Thorn, M. Rothschild, A. Johnson, L. Karriker, and T. Serenius. 2008 (Abstr.). Associations between body structure and overall leg action in crossbred gilts. J. Anim. Sci. 86(E-Suppl. 2):510.
21. Fan, B., S. K. Onteru, M. T. Nikkilä, K. J. Stalder, and M. F. Rothschild. 2009. Large-scale association studies for reproductive traits in pigs. Proc. Plant and Animal Genome XVII, San Diego, CA USA. January, 2009.
22. Holt, W., J. Reiman, A. Johnson, J. Hanson, L. Layman, and L. Karriker. 2008. Impact of time and temperature on diagnostic outcome in swine. Submitted October 29th 2008 for consideration to be presented at Midwest ASAS 2009.
23. Nikkilä, M., K. Stalder, B. Mote, J. Lampe, B. Thorn, M. Rothschild, A. Johnson, L. Karriker, and T. Serenius. 2009 (Abstr.). Impact of gilts’ body composition and body structure on reproductive performance. J. Anim. Sci. 87 (Suppl.): 9.
24. Fan, B., S. K. Onteru, M. T. Nikkilä, K. J. Stalder, and M. F. Rothschild. 2009 (Abstr.). Identification of genetic markers associated with fatness and leg weakness traits in the pig. J. Anim. Sci. 87 (Suppl.): 11.
ARTICLES IN TRADE PUBLICATIONS
1. Stalder, K. J., and C. Lacy. 1998. How profitable is sow longevity? Pork ‘98. Vance Publishing. Shawnee Mission, KS 66201. 18:28-30.
2. Stalder, K. J. 1998. Sow longevity – An important component of profitability. Seedstock Edge. National Swine Registry. West Lafayette, IN 47906. 5:100-101.
3. Stalder, K. J., and R. N. Goodwin. 2000. Gilt development: Impact on lifetime reproductive performance. National Hog Farmer. Intertec Publishing Corp. Shawnee Mission, KS 66282. 45:14-20.
4. Stalder, K. J. 2001. Getting a handle on sow herd dropouts. National Hog Farmer. Intertec Publishing Corp. Shawnee Mission, KS 66282. 46:12-14.
5. Stalder, K. J. 2002. The importance of sow longevity for commercial breed-to-wean swine operations. Commercial Edge. National Swine Registry. West Lafayette, IN 47906. 8:60-61.
6. Stalder, K. J., and T. J. Baas. 2003. Are you prepared to raise your own gilts? National Hog Farmer. Primedia Magazines and Media Inc. Overland Park, KS 66212. 48:14-17.
7. Stalder, K. J., and T. Serenius. 2004. Sow longevity scrutinized. National Hog Farmer. Primedia Magazines and Media Inc. Overland Park, KS 66212. 49(7):26-30.
8. Stalder, K. J. 2005. Risk factors associated with high sow culling/removal rates. Animal Husbandry and Agricultural Journal. Pencor, Inc. Manila, the Philippines, May Issue 39(no.3):6-8.
9. Stalder, K. J., T. V. Serenius, S. J. Moeller, M. Knauer, T. J. Baas, J. W. Mabry, M. F. Rothschild, and B. E. Mote. 2005. U.S. studious about sow longevity. Pig Progress. Reed Business Information bv, International Agri- and Horticulture, The Netherlands, 21(no.2):6-8.
10. Stalder, K. J., and T. J. Baas. 2005. Screen gilts for feet and leg disorders. National Hog Farmer. Primedia Magazines and Media Inc. Overland Park, KS 66212. 50(no.2):4.
11. Stalder, K. J., and T. J. Baas. 2005. Conformation, structural soundness guidelines for improved sow longevity. National Hog Farmer. Primedia Magazines and Media Inc. Overland Park, KS 66212. 50(no.1):4.
12. Stalder, K. J., and J. W. Mabry. 2005. Genetic, financial implications of raising your own gilts. National Hog Farmer. Primedia Magazines and Media Inc. Overland Park, KS 66212. 50(no.1):14-17.
13. Fitzgerald, R. F., K. J. Stalder, L. Karriker, C. J. Johnson, L. Layman, T. J. Baas, and J. W. Mabry. 2006. Cull sows can be worth feeding. National Hog Farmer. Prism Business Media. Overland Park, KS 66212. 51(no.12):11-12.
14. Stalder, K. J., M. Knauer, L. Karriker, T. J. Baas, C. Johnson, T. Serenius, L. Layman, J. W. Mabry, J. D. McKean. 2006. A closer look at why sows are culled. National Hog Farmer. Prism Business Media. Overland Park, KS 66212. 51(no.12):16-17.
15. Mote, B. E., K. Stalder, and M. F. Rothschild. 2006. Sow longevity marker genes confirmed. National Hog Farmer. Prism Business Media. Overland Park, KS 66212. 51(no.12):17.
16. Johnson, C., K. Stalder, and L. Karriker. 2006. Sow condition scoring guidelines. National Hog Farmer. Prism Business Media. Overland Park, KS 66212. No. 42 in a series. 51:7-9.
17. Knauer, M., L. Karriker, and K. Stalder. 2006. Understanding why sows are culled. National Hog Farmer. Prism Business Media. Overland Park, KS 66212. No. 42 in a series. 51:27-29.
18. Fitzgerald, R., K. Stalder, and L. Karriker. 2006. Optimizing cull sow value. National Hog Farmer. Prism Business Media. Overland Park, KS 66212. No. 42 in a series. 51:30-37.
19. Stalder, K. 2007. The sow stall debate continues. National Hog Farmer. Penton Media, Inc. Minneapolis, MN 55425. 52(no.11):24-27.
20. Stalder, K. 2007. Parity distribution will affect your bottom line? National Hog Farmer. Penton Media, Inc. Minneapolis, MN 55425. 52(no.8):32-33.
21. Stalder, K., M. Knauer, and L. Karriker. 2007. Are sows being culled for the right reasons? National Hog Farmer. Penton Media, Inc. Minneapolis, MN 55425. 52(no.4): 26-30.
22. Stalder, K. J. 2007. Breeding herd mortality – have we become complacent? PORK. Vance Publishing Corp., Lenexa, KS 66214. February Issue pp. 20-21.
23. Fan, B., S. K. Onteru, M. Nikkilä, K. J. Stalder, and M. F. Rothschild. 2008. Marker assisted selection could boost sow performance. National Hog Farmer 2008 Swine Research Report. Penton Media, Inc. Minneapolis, MN 55425. 53(no.12):14-15.
24. Sadler, L. J., J. R. Garvey, T. J. Uhlenkamp, C. J. Jackson, K. Stalder, L. A. Karriker, R. A. Edler, J. T. Holck, P. Dubois, and A. K. Johnson. 2008. Report on Drinker-to-Nursery Pigs Ratio. Sep 16, 2008. Available at http://farms.com/FarmsPages/Commentary/DetailedCommentary/tabid/192/Default.aspx?NewsID=14973&CV=1
25. Stalder, K., L. Karriker, and A. Johnson. 2008. Understanding sow mortality. Benchmarking: Setting Higher Standards in Pork Production, 2007 Summary of the PigCHAMP Database. Farms.com Media & PigCHAMP, Ames, IA 50011, 3(no.1):12-14.
26. Stalder, K., A. Johnson, and L. Karriker. 2008. A new look at sow longevity. Gene Link, National Swine Registry, West Lafayette, IN 47906, pp. 20-22.
27. Stalder, K. 2008. Parity’s impact on productivity. National Hog Farmer. Penton Media, Inc. Minneapolis, MN 55425. 53(no.2):28-30.
28. Karriker, L. A., S. Millman, K. J. Stalder and A. K. Johnson. 2009. ISU opens house for sow lameness research. PigProgress.net 3rd June 2009.
29. Nikkilä, M., K. Stalder, T. Serenius, B. Mote, M. Rothschild, A. Johnson and L. Karriker. 2009. Trait interactions offer clues to sow lifetime performance. National Hog Farmer; January 15th 2009 pp 36 – 39.
30. Nikkilae, M., K. Stalder, B. Mote, M. Rothschild, A. Johnson, L. Karriker, T. Serenius, J. Lampe, B. Thorn. 2009. Structural soundness in commercial gilts studied. National Hog Farmer. Penton Media, Inc. Minneapolis, MN 55425. available at: http://nationalhogfarmer.com/genetics-reproduction/evaluation-selection/structural-soundness-commercial-gilts/?cid=research accessed: March 3, 2009.
31. Nikkilae, M., K. Stalder, T. Serenius, B. Mote, M. Rothschild, A. Johnson, L. Karriker, and B. Thorn. 2009. Trait interactions offer clues to sow lifetime performance. National Hog Farmer. Penton Media, Inc. Minneapolis, MN 55425. 54(1):36-38.
32. Stalder, K. J. 2009. Calculating payback parity for replacement gilts. National Hog Farmer. Penton Media, Inc. Minneapolis, MN 55425. 54(2):18-24.
33. Stalder, K., L. Engblom, and J. Mabry. 2009. Benchmarking sow lifetime productivity. Benchmark 2008 Summary of the PigCHAMP database. Farms.com Media & PigCHAMP, Ames, IA. 4:(In Press).
34. Stalder, K. J., L. Engblom, and C. Johnson. 2009. Understanding sow lameness. Western Hog Journal. Alberta Pork, Edmonton, Alberta, Canada, 30(5):38-41.
35. Stalder, K. J., L. Karriker, and A. Johnson. 2009. Understanding sow mortality. Benchmark. 2007 Summary of the PigCHAMP Database. Farms.com 3:12&14.