L. Lee Southern

Title Professor Emeritus
Department School of Animal Sciences
E-mail LSouthern@agcenter.lsu.edu
Address 1
Phone 225-578-3421


LSU Phi Kappa Phi Award for Outstanding Research by Non-tenured Faculty, 1987

First Mississippi Corporation Award of Excellence for Outstanding Work in the Louisiana Agricultural Experiment Station, 1991

Gamma Sigma Delta Research Award of Merit, 1994

Gamma Sigma Delta Teaching Merit Honor Role, 1995, 1997, 1998, 1999, 2000

AFIA Nonruminant Nutrition Award, 1997. Presented by the American Society of Animal Science

ESCOP/ACOP Leadership Development Internship Recipient, 1997-1998

Member, National Research Council, Board on Agriculture, Committee on Animal Nutrition, 1998-2002. The CAN Committee is a standing committee that “serves as an independent advisor to the federal government on scientific and technical questions of national importance.”

Tipton Team Research Award in Recognition of Excellence in Research, 1999

Doyle Chambers Research Award in Recognition of Excellence in Research. 2002

Named Doyle Chambers Professor of Animal Science, 2007


1. Southern, L.L. and T.G. Page. 1994. Increasing Egg Production in Poultry. US Department of Commerce, Patent and Trademark Office, U.S. Patent Number 5,336,672, issued August 9, 1994.

2. Southern, L.L. 2004. Blood Return Catheter. 2004. US Department of Commerce, Patent and Trademark Office, U.S. Patent Number 6,712,797, issued March 30, 2004.

Recent Publications:

Shelton, J.L., L.L. Southern, F.M. LeMieux, T.D. Bidner and T.G. Page. 2005. Effect of microbial phytase addition with or without the trace mineral premix in nursery, growing, and finishing pig diets. J. Anim. Sci. 83:376-385.

Guzik, A.C., M.J. Pettitt, E. Beltranena, L.L. Southern and B.J. Kerr. 2005. Dietary threonine:lysine and tryptophan:lysine ratios fed to nursery pigs. J. Anim. Physiol. Anim. Nutr. 89:297-302.

Payne, R.L., T.K. Lavergne and L.L. Southern. 2005 Effect of inorganic versus organic selenium on hen production and egg selenium concentration. Poultry Sci. 84:232-237.

Payne, R.L., T.K. Lavergne and L.L. Southern 2005. A comparison of two sources of phytase in liquid and dry forms in broilers. Poultry Sci. 84:265-272.

Williams, S.B., L.L. Southern and T.D. Bidner. 2005. Effects of supplemental dietary phytase and pharmacological concentrations of zinc on growth performance and tissue zinc concentrations of weanling pigs. J. Anim. Sci. 83:386-392.

Payne, R.L. and L.L. Southern. 2005. Comparison of inorganic and organic selenium sources for broilers. Poultry Sci. 84:898-902.

Mahan, D.C., J.H. Brendemuhl, S.D. Carter, L.I. Chiba, T.D. Crenshaw, G.L. Cromwell, C.R. Dove, A.F. Harper, G.M. Hill, G.R. Hollis, S.W. Kim, M.D. Lindemann, C.V. Maxwell, P.S. Miller, J.L. Nelssen, B.T. Richert, L.L. Southern, T.S. Stahly, H.H. Stein, E. van Heugten and J.T. Yen. 2005. Comparison of dietary selenium fed to grower-finisher pigs from various regions of the United States on resulting tissue Se and loin mineral concentrations. J. Anim. Sci. 83:852-857.

Matthews, J.O., A.C. Guzik, F.M. LeMieux, L.L. Southern and T.D. Bidner. 2005. Effects of chromium propionate on growth, carcass traits, and pork quality of growing-finishing pigs. J. Anim. Sci. 83: 858-862.

Payne, R.L. and L.L. Southern. 2005. Changes in glutathione peroxidase and tissue selenium concentrations of broilers after consuming a diet adequate in selenium. Poultry Sci. 84:1268-1276.

Shelton, J.L., D.W. Dean, L.L. Southern and T.D. Bidner. 2005. Effect of protein and energy sources and bulk density of diets on growth performance of chicks. Poultry Sci. 84:1547-1554.

Watson, B.C., J.O. Matthews, L.L. Southern and J.L. Shelton. 2005. The interactive effects of Eimeria acervulina infection and phytase in broiler chicks. Poultry Sci. 84:910-913.

Dean, D.W., L.L. Southern, B J. Kerr and T.D. Bidner. 2005 Isoleucine requirement of 80- to 120-kilogram barrows fed corn-soybean meal or corn-blood cell diets. J. Anim. Sci. 83:2543-2553.

Guzik, A.C., J.L. Shelton, L.L. Southern, B.J. Kerr and T.D. Bidner. 2005. The tryptophan requirement of growing and finishing barrows. J. Anim. Sci. 83:1303-1311.

O’Connor-Dennie, T. and L.L. Southern. 2005. The effect of virginiamycin in diets with adequate or reduced dietary calcium or nonphytate phosphorus for broilers. Poultry Sci. 84:1868-1874.

Robbins, K.R., A.M. Saxton and L.L. Southern. 2006. Estimation of nutrient requirements using broken-line regression analysis. J. Anim. Sci. 84(E. Suppl.):E155-E165.

Dean, D.W., L.L. Southern, B.J. Kerr and T.D. Bidner. 2006. Glycine supplementation to low protein amino acid supplemented diets supports optimal performance of broiler chicks. Poultry Sci. 85:288-296.

Shelton, J.L. and L.L. Southern. 2006. Effect of phytase addition with or without the trace mineral premix on growth performance, bone response variables, and tissue mineral concentrations in commercial broilers. J. Appl. Poultry Res. 15:94-102.

Watson, B.C., J.O. Matthews, L.L. Southern and J.L. Shelton. 2006. The effects of phytase on growth performance and intestinal transit time of broilers fed nutritionally adequate diets and diets deficient in calcium and phosphorus. Poultry Sci. 85:493-497.

Chung, Y.H, H.G. Bateman, II, C.C. Williams, C.C. Stanley, D.T. Gantt, T.W. Braud, L.L. Southern, J.D. Ward, P.G. Hoyt and G.A. Sod. 2006. Effects of methionine and lysine on fermentation in vitro and in vivo, nutrient flow to the intestine, and milk production. J. Dairy Sci. 89:1613-1620.

Koopmans, S.J., A.C. Guzik, J. van der Meulen, R. Dekker, J. Kogut, B.J. Kerr and L.L. Southern. 2006. Effects of supplemental L-tryptophan on serotonin, cortisol, intestinal integrity, and behavior in weanling piglets. J. Anim. Sci. 84: 963-971.

Payne, R.L., T.D. Bidner, T.M. Fakler and L. L. Southern. 2006. Growth and intestinal morphology of pigs from sows fed two zinc sources during gestation and lactation. J. Anim. Sci. 84:2141-2149.

Guzik, A.C., J.O. Matthews, B.J. Kerr, T.D. Bidner and L.L. Southern. 2006. Dietary tryptophan effects on plasma and salivary cortisol and meat quality in pigs. J. Anim. Sci. 84:2251-2259.

Dean, D.W., Southern, L.L., B.J. Kerr and T.D. Bidner. 2007. The lysine and total sulfur amino acid requirements of six- to twelve-kilogram pigs. Prof. Anim. Sci. 23:527-535.

Shelton, J.L. and L.L. Southern. 2007. Interactive effects of zinc, copper and manganese in diets for broilers. Inter. J. Poult. Sci. 6 (7) 466-469.

Dean, D.W., Southern, L.L. and T.D. Bidner. 2007. Low crude protein diets for late finishing barrows. Prof. Anim. Sci. 23:616-624.

Lauzon, D.A., S. L. Johnston, L. L. Southern and Z. Xu. 2008. The effect of carrier for vitamin E on liver concentrations of vitamin e and vitamin e excretion in broilers. Poult. Sci. 87:934-939.

Roux, M.L., S.L. Johnston, R.D. Lirette, T. D. Bidner, L. L. Southern and P. W. Jardon. 2008. The effect of diets varying in dietary cation-anion difference fed in late gestation and in lactation on sow productivity. Prof. Anim. Sci. 24:149-155.

Powell, S., S. Johnston, L. Gaston and L. L. Southern. 2008. The effect of dietary phosphorus level and phytase supplementation on growth performance, bone breaking strength, and litter phosphorus concentration in broilers. Poult. Sci. 87:949-957.

Darroch, C.S., C.R. Dove, C.V. Maxwell, Z.B. Johnson and L.L. Southern. 2008. A regional evaluation of the effect of fiber type in gestation diets on sow reproductive performance. J. Anim. Sci. 86:1573-1578.

1982 to present, Assistant, Associate and Full Professor, School of Animal Sciences

1977 B.S. North Carolina State University
1979 M.S. North Carolina State University
1983 Ph.D. University of Illinois

Innovate . Educate . Improve Lives

The LSU AgCenter and the LSU College of Agriculture