Summary of Responsibilities:
As a regional director current responsible are for all research and extension programs, goals, objectives, personnel, and budget functions for the seven parish North Central Region which includes eight extension offices and two research stations.  In addition, still maintains day-to-day responsibles for research, personnel, and budgets at the Hill Farm and Calhoun Research Stations.

Education:
B.S.- Animal Science, Louisiana State University
M.S.- Animal Science (Animal Nutrition), Louisiana State University
Ph.D.- Animal Science (Ruminant Nutrition), Iowa State University

Previous Employment and Work Experience:
December, 2001 - present
Regional Director and Professor, North Central Region, Louisiana State University Agricultural Center

May, 1998 - November, 2001
Resident Director and Professor, Hill Farm Research Station, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center

May, 1996 - April, 1998
Vice-President, Nutrition and Product Development and member of Board of Directors, Kent Feeds, Inc., Muscatine, IA

October, l991 - April, 1996
Vice-President, Dairy Nutrition and Associate Dairy Products Manager, Kent Feeds, Inc., Muscatine, IA

April, l988 - September 1991
Dairy Nutritionist and Assistant Dairy Products Manager, Kent Feeds, Inc., Muscatine, IA

January, l982 - April, 1988
Assistant and Associate Professor, Department of Dairy Science, Louisiana State University, Baton Rouge, LA

September, l979 - December, 1981
Assistant Professor, Department of Animal Science, Oregon State University, Corvallis, OR

September, l976 - May, 1978
Instructor, Department of Animal Science, Iowa State University, Ames, IA

Membership in Professional Organizations:

1. American College of Animal Nutrition Diplomate, 1995-present
2. American Dairy Science Association, 1977 - present
3. American Feed Industry Association Nutrition Council, 1996-1998
4. American Forage and Grassland Council, 1984 - 1988, 1998 - present
5. American Registry of Professional Animal Scientists, 1991-present
6. American Society of Animal Science, 1971-1993
7. Ark-La-Tex Agricultural Council, 1999 - present
8. Council for Agricultural Science and Technology, 1977 - present
9. Louisiana and Claiborne Parish Cattleman's Association, 1998 - present
10. Louisiana Dairy Fieldman's Association, 1998 - present
11. Louisiana Farm Bureau Federation, 1998 - present
12. Louisiana Forage and Grassland Council, 1984 - 1988, 1998 - present
13. Louisiana Forestry Association, 2000 - present
14. National Association of Colleges and Teachers of Agriculture, 1980-1988
15. Research Center Administrators Society, 1999 - present
16. Southern Association of Agricultural Scientists, 1982 - 1988, 1999 - present

1. Alpha Zeta
2. Gamma Beta Phi
3. Gamma Sigma Delta
4. Omicron Delta Kappa
5. Phi Kappa Phi

1. Claiborne Parish Community Leadership Economic Development Program, 1999
2. Claiborne Parish Fair Association Board, adviser, 2000 - present
3. Homer Chamber of Commerce, member 1998 - present
4. Homer Chamber of Commerce, Board of Directors 2001 - present
5. Homer Lions Club, 1998 - present
6. Homer's Louisiana Small Town Program, 1999
7. Homer Sesquicentennial Committee, 2000

A. Books:

1. Church, D.C., and W.A. Nipper. 1984. Ration Formulation, Chapter 12. In Livestock Feeds and Feeding. O and B Books, Corvallis, OR.

1. Rosecrans, J.G., W.A. Nipper, W.D. Hohenboken, and D.W. Weber. 1982. Effects of twin-foster calf rearing and age at weaning on cow and calf performance. Canadian J. Anim. Sci. 62:821-825.
2. Nipper, W. Allen, Wise Burroughs, and Allen Trenkle. 1987. Maintenance nitrogen requirement and intestinal microorganisms. J. Nutr. 117:335-341.
3. Hafley, J., W.A. Nipper, W.M. Craig, R.W. Adkinson, and A.S. Achacoso. 1987. In vitro protein degradation of cool-season forages planted with minimum-tillage and no fertilization. J. Dairy Sci. 70:2322-2329.
4. Hafley, J., W.A. Nipper, W.M. Craig, R.W. Adkinson, and A.S. Achacoso. 1987. Effect of growth stage and fertilization on crude protein and in vitro protein degradation of cool-season forages. J. Dairy Sci. 70:2550-2559.
5. DeRouen, S.M., W.A. Nipper, A.S. Achacoso, R.W. Adkinson, and J. L. Hafley. 1988. Evaluation of protein supplementation for dairy heifers fed corn silage or hay supplemented with ryegrass grazing. Nutr. Rep. Inter. 37:1037-1045.
6. Olubobokum, J.A., W.M. Craig, and W.A. Nipper. 1988. Characteristics of protozoal and bacterial fractions obtained from rumen fluid and particle-associated microorganisms. J. Anim. Sci. 66:2701-2710.
7. Stutts, J.A., W.A. Nipper, R.W. Adkinson, J. E. Chandler, and A.S. Achacoso. 1988. Protein solubility, in vitro ammonia production, and in situ disappearance of extruded whole cottonseed and other protein sources. J. Dairy Sci. 71:3323-3333.
8. Stutts, J.A., W.A. Nipper, R.W. Adkinson, J. E. Chandler, and A.S. Achacoso. 1988. Protein solubility, in vitro ammonia production, and in situ disappearance of extruded whole cottonseed and other protein sources. J. Dairy Sci. 71:3323-3333.
9. Jimenez, D.A., J. E. Chandler, R.W. Adkinson, W.A. Nipper, A. Baham, and A.M. Saxton. 1989. Effect of feeding gossypol in cottonseed meal on growth, semen quality, and spermatogenesis of yearling Holstein bulls. J. Dairy Sci. 72:1866-1875.
10. Keery, C.M., J.C. Allen, and W.A. Nipper. 1991. Effects of ensiling on the digestibility and utilization of whole oilseeds by wethers. J. Dairy Sci. 74:518-526.
11. Coombs, D.F., D.W. Sanson, W.A. Nipper, A.F. Loyacano, and S.M. DeRouen. 1997. Performance and carcass data of steers finished on either ammoniated or nonammoniated corn, grain sorghum, or wheat silage. Prof. Anim. Sci.13:176-181.

1. Nipper, W.A., F.G. Hembry, and P.E. Schilling. 1974. Ration-climatic effects on steer performance. J. Anim. Sci. 38:215. (Abstr.)
2. Bagley, C.P., F.G. Hembry, W.A. Nipper, and P.E. Schilling. 1976. Effects of climate and supplemental K and Co on steer performance. J. Anim. Sci. 42:242. (Abstr.)
3. Rosecrans, J.G., W.D. Hohenboken, and W.A. Nipper. 1981. Effect of twin foster vs. single calf rearing on cow and calf performance and on income per cow. Proc. West. Sec. Soc. Anim. Sci. 32:111-113.
4. Nipper, W.A., R.H. Sorbet, Jr., R.W. Adkinson, and J.A. Stutts. 1984. Use of corn gluten meal to reduce dietary crude protein level to meet requirements for cows in early lactation. J. Dairy Sci. 67 (Suppl. 1):233. (Abstr.)
5. Stutts, J.A., and W.A. Nipper. 1984. Protein solubility of whole cottonseed extruded at four temperatures. J. Dairy Sci. 67 (Suppl. 1):219. (Abstr.)
6. Ruiz, T.M., A.S. Achacoso, and W.A. Nipper. 1984. Feeding rolled mature corn silage in a complete ration to lactating dairy cows. J. Dairy Sci. 67 (Suppl. 1):224. (Abstr.)
7. Dabney, S.M., R.W. Taylor, and W.A. Nipper. 1984. Evaluation of cover crops for no-till corn silage production in Louisiana. Seventh Annual No-tillage Systems Conference, Headland, AL.
8. Stutts, J.A., and W.A. Nipper. 1985. In vitro ammonia production and in situ disappearance of extruded whole cottonseed. J. Dairy Sci. 68 (Suppl. 1):258. (Abstr.)
9. Quinones, K., A. S. Achacoso, and W.A. Nipper. 1985. The effect of rolled mature corn silage in a complete ration on heifer performance. J. Dairy Sci. 68 (Suppl. 1):267. (Abstr.)
10. Nipper, W.A., E.E. Hawkins, and D.W. Weber. 1985. Effect of dietary cull onion bulbs on bovine hemolytic anemia and gain. J. Anim. Sci. 61 (Suppl. 1):501. (Abstr.)
11. Hafley, J., W.A. Nipper, W.M. Craig, and S.M. Dabney. 1985. Evaluation of winter forages by in vitro protein degradation. J. Anim. Sci. 61 (Suppl. 1):330. (Abstr.)
12. DeRouen, S.M., W.A. Nipper, A.S. Achacoso, and R.W. Adkinson. 1986. The effect of protein supplementation on average daily gain and condition score of yearling heifers on ryegrass pasture. J. Dairy Sci. 69 (Suppl. 1):229. (Abstr.)
13. Coombs, D. F., W.A. Nipper, B.D. Nelson, S.M. DeRouen, A.M. Saxton, and J.L. Kreider. 1986. Beef production from ammoniated or non-ammoniated corn, grain sorghum and wheat silages. J. Anim. Sci. 63 (Suppl. 1):20. (Abstr.)
14. Achacoso, A.S., R.H. Sorbet, Jr., and W.A. Nipper. 1986. Ensiling of sweet sorghum and sugarcane bagasse with sweet potato lye peel at different dry matter levels. J. Dairy Sci. 69 (Suppl. 1):231. (Abstr.)
15. Olubobokum, J.A., W.M. Craig, and W.A. Nipper. 1986. Characteristics of protozoa and bacteria fractions obtained from rumen particle-associated and fluid microorganisms. J. Anim. Sci. 63 (Suppl. 1):413. (Abstr.)
16. Nipper, W.A., J.E. Williams, A.S. Achacoso, and R.W. Adkinson. 1986. The effectiveness of whole cottonseed in preventing milk fat depression. J. Dairy Sci. 69 (Suppl. 1):143. (Abstr.)
17. Kerry, C.M., J.C. Allen, and W.A. Nipper. 1989. Digestibility of cottonseed fed whole or ensiled with silage. FASEB J. 3:A1256. (Abstr.)
18. Zhang, Y., J.C. Allen, and W.A. Nipper. 1989. Factors influencing in situ evaluation of escape feed nitrogen from rumen degradation. FASEB J. 3:A1262. (Abstr.)
19. Edmonds, M.S., B.E. Arentson, W.A. Nipper, and D. L. Froe II. 1997. Segregated early weaning: effect of raising pigs on-site and off-site with and without vaccinations on performance and economics. J. Anim. Sci. 75 (Suppl. 1):195. (Abstr.)
20. C.M. Cheatham, C.C.Williams, W.A. Nipper, H.G. Bateman, II, J. M. Fernandez, B. F. Jenny, D.T. Gantt, and G. E. Goodier. 2001.  Growth and development in Holstein and Jersey calves fed milk replacer once versus twice daily. J. Dairy. Sci. (Abstr.)
21. C.M. Cheatham, C.C.Williams, J. M. Fernandez, W.A. Nipper, H.G. Bateman, II , J.C. Lovejoy, D.T. Gantt, L.R. Gentry, and G.E. Goodier. 2001.  Glucose Metabolism in Holstein and Jersey calves fed milk replacer once versus twice daily.  J. Dairy. Sci. (Abstr.)

Over 200 producer publications related to feeding and nutrition were written and published across 14 Midwestern states for Kent Feeds' customers.  Over 50 Experiment Station Bulletins and Reports, Livestock Producers' Day Reports, Animal Science Leaflets, Special Reports, Louisiana Agriculture, research station Progress Reports, and popular press articles have been written.