Siegel, P. B., C. F. Honaker, and W. M. Rauw. 2009. Selection for high production in poultry. Pages 230-242 in Resource Allocation Theory Applied to Farm Animal Production. W. M. Rauw (ed.) CABI Pub., Cambridge, MA.
 
Cline, M. A., A. Y. Kuo, M. L. Smith, W. Nander, B. C. Prall, P. B. Siegel, and D. M. Denbow. 2009. Differential feed intake responses to central corticotropin releasing factor in lines of chickens divergently selected for low or high body weight. Comp. Biochem. and Physiol. A: Mol. Integr. Physiol. 152:130-134.
 
Siegel, P. B., and C. F. Honaker. 2009. Effects of genetic selection for growth and immunity on resource allocations.  J. Applied Poult. Res. 18:125-130.
 
Ka, S., J. Lindberg, L. Stromstedt, C. Fitzsimmons, N. Lindquist, J. Lundeberg, P. B. Siegel, L. Andersson, and F. Hallbook. 2009. Extremely different behaviours in high and low body weight lines of chickens are associated with differential expression of genes involved in neuronal plasticity. J. Neuroendocrin. 21:208-216.
 
Siegel, P. B. 2009. The poultry scientist: Past, present, and future. Poultry Sci. 88: 1133-1136.
 
Wahlberg, P., O. Carlborg, X. Tordor, M. Foglio, A-C. Syvanen, M. Lathrop, I. O. Gut, P. B. Siegel, and L. Andersson. 2009. Genetic analysis of an F2 intercross between two chicken lines divergently selected for body weight. BMC Genomics 10:248-260.
 
Ka, S., S. Kerje, L. Bornold, U. Liljegren, P. B. Siegel, L. Andersson, and F. Hallbook. 2009. Proviral integrations and expression of endogenous Avian leukosis virus during long term selection for high and low body weight in two chicken lines. Retrovirology 6:68-76.
 
Yalcin, S., V. Bruggeman, J. Buyse, E. Decuypere, M. Cabuk, and P. B. Siegel. 2009. Acclimation to heat during incubation. 4. Blood hormones and metabolites in broilers exposed to daily high temperatures. Poultry Sci. 88:2006-2013.
 
Dunnington, E. A., and P. B. Siegel. 2009. Growth in chickens: 3A. Body weight at sexual maturity. Anim.Sci. Image Gallery (PowerPoint presentation designed for use in high school and college genetic courses). [NAL 4738]: http://anscigallery.nal.usda.gov/browse.php.
 
Dunnington, E. A., and P. B. Siegel. 2009. Growth in chickens: 3B. Age and body weight at sexual maturity. Anim. Sci. Image Gallery (PowerPoint presentation designed for use in high school and college genetic courses). [NAL 4739]: http://anscigallery.nal.usda.gov/browse.php.
 
Dunnington, E. A., and P. B. Siegel. 2009. Growth in chickens: 4. Anorexia and sexual maturity. Anim. Sci. Image Gallery (PowerPoint presentation designed for use in high school and college genetic courses.) [NAL 5025]: http://anscigallery.nal.usda.gov/browse.php.
 
Rubin, C- J., M. C. Zody, P. B. Siegel, K. Lindblad-Toh, and L. Andersson. 2010. Whole genome resequencing reveals loci under selection during chicken domestication. Nature 464:587-591.
 
Cline, M. A., W. Nandar, C. Bowden, W. Calchary,, M. L. Smith, B. Newmyer, J. O. Rogers, and P. B. Siegel. 2010. The threshold of amylin-induced anorexia is lower in chicks selected for low compared to high juvenile body weight. Behav. Brain Res. 208:650-654.
 
Newmyer, B. A., P. B. Siegel, and M. A. Cline. 2010. Neuropeptide AF differentially affects anorexia in lines of chickens selected for high or low body weight. J. Neuroendocrin. 22:1-6.
 
Hellstrom, A., E. Sundstrom, U. Gunnarsson, B. Bed’Hom, M. Tixier-Boichard, C. F. Honaker, A. –S. Sahlqvist, P. Jensen, O. Kampe, P. B. Siegel, S. Kerje, and L. Andersson. 2010. Sex-linked barring in chickens is controlled by the CDKN2A/B tumour suppressor locus. Pigment Cell Melanoma Res. 23:521-530.
 
Cline, M. A., R. Siders, B. Newmyer, M. L. Smith, and P. B. Siegel. 2010. Both cacitonin and calcitonin gene-related peptides’ thresholds of hyperphagia are considerably lower in chicks selected for high than low juvenile body weight. Physiol. Behav.101:254-259.
 
Blevins, S. R., P. B. Siegel, D. J. Blodgett, M. F. Ehrich, G. K. Saunders, and R. M. Lewis. 2010. Effects of silymarin on gossypol toxicosis in divergent lines of chickens. Poult. Sci. 89:1878-1886.
 
Ek, W., L. Stromstedt, P. Wahlberg, P. B. Siegel, L. Andersson, and O. Carlborg. 2010. Genetic analysis of metabolic traits in an intercross between body weight selected chicken lines. Physiol. Genomics 42:20-22.
 
Dunnington, E. A., and P. B. Siegel. 2010. Mating frequency in chickens. Anim. Sci. Image Gallery (PowerPoint presentation designed for high school and college genetics courses). [NAL 5064]: http://anscigallery.nal.usda.gov/browse.php.
 
Dunnington, E. A., R. Dalloul, and P. B. Siegel. 2010. Genetics of the immune response in chickens: 1. The selection experiment. Anim. Sci. Image Gallery (PowerPoint presentation designed for high school and college genetics courses). [NAL 5071]: http://anscigallery.nal.usda.gov/browse.php.
 
Dunnington, E. A., R. Dalloul, and P. B. Siegel. 2010. Genetics of the immune response in chickens: 2. Correlated responses to selection. Anim. Sci. Image Gallery (PowerPoint presentation designed for high school and college genetics courses). [NAL 5072]: http://anscigallery.nal.usda.gov/browse.php.
 
Dunnington, E. A., R. Dalloul, and P. B. Siegel. 2010. Genetics of the immune response in chickens: 3. Alloantigen systems. Anim. Sci. Image Gallery (PowerPoint presentation designed for high school and college genetics courses). [NAL 5073]: http://anscigallery.nal.usda.gov/browse.php.
 
Johansson, A. M., M. E. Pettersson, P. B. Siegel, and O. Carlborg. 2010. Genome-wide effects of long-term divergent selection. PLoS Genet. 6(11): e1001188. doi:10.1371/journal.pgen.1001188.
 
Marquez, G. C., P. B. Siegel, and R. M. Lewis. 2010. Genetic diversity and population structure in lines of chickens divergently selected for high and low eight-week body weight. Poult. Sci. 89:2580-2588.
 
Besnier, F., P. Wahlberg, L. Ronnegard, W. Ek, L. Andersson, P. B. Siegel, and O. Carlborg. 2011. Fine mapping and replication of QTL in outbred chicken advanced intercross lines. Gen. Sel. Evol. 43:3.
 
Xu, P., P. B. Siegel, and D. M. Denbow. 2011. Genetic selection for body weight in chickens has altered responses of the brain’s AMPK system to feed regulation of ghrelin, but not obestatin. Behav. Brain Res.221:216-226.
 
Xu, P., P. B. Siegel, D. M. Denbow. 2011. AICAR compound C regulates food intake independently of AMP-activated protein kinase in lines of chickens selected for high or low body weight. Comp. Biochem. Physiol. 159:401-412.
 
Dorshorst, B. J., P. B. Siegel, and C. M. Ashwell. 2011. Genomic regions associated with antibody response to sheep red blood cells in the chicken. Anim. Gen. 42:300-308.
 
Smith, M., B. C. Prall, P. B. Siegel, and M. A. Cline. 2011. The threshold of insulin-induced hypophagia is lower in chicks selected for low rather than high juvenile body weight. Behav. Brain Res. 216:719-722.
 
Pettersson, M., F. Besnier, P. B. Siegel, and O. Carlborg. 2011. Replication and explorations of high-order epistasis using a large advanced intercross line pedigree. PLoS Genetics 7:e1002180.
 
Wu, G. Q., P. B. Siegel, E. R. Gilbert, N. Yang, and E. A. Wong. 2011. Expression profiles of somatotropic axis genes in lines of chickens divergently selected for 56-day body weight. Anim. Biotech. 22:100-110.
 
Siegel, P. B., S. J. Gustin, M. N. Katanbaf. 2011. Motor ability and self-selection of an analgesic drug by fast-growing chickens. J. Appl. Poult. Res. 20:249-252.
 
Gaydos, J. K., J. G. Massey, D. M. Mulcahy, L. A. Gaskins, D. Nysewander, J. Evenson, P. B. Siegel, and M. H. Ziccardi. 2011. Short-term survival and effects of transmitter implantation into Western Grebes using a modified surgical procedure. J. Zoo and Wildlife Med. 42:414-425.
 
Dunnington, E. A., N. O’Sullivan, and P. B. Siegel. 2011. Early and late feathering in chickens: Gender determination in chicks. Anim. Sci. Image Gallery (PowerPoint presentation designed for high school and college genetics courses). [NAL 5150]: http://anscigallery.nal.usda.gov/browse.php.
 
Ka, S., F. W. Albert, D. M. Denbow, S. Paabo, P. B. Siegel, L. Andersson, and F. Hallbook. 2011. Differentially expressed genes in hypothalamus in relation to genomic regions under selection in two chicken lines resulting from divergent selection for high or low body weight. Neurogenetics 12:211-221.
 
Blevins, S., P. B. Siegel, D. J. Blodgett, M. Ehrich, and R. M. Lewis. 2012. Liver enzymes in White Leghorns selected for the SRBC immune response. Poult. Sci. 91:322-326.
 
Sumners, L. H., C. M. Cox, S. Kim, J. E. Salevsky, P. B. Siegel, and R. A. Dalloul. 2012. Immunological responses to Clostridium perfringens alpha-toxin in two genetically divergent lines of chickens as influenced by major histocompatability genotype. Poult. Sci. 91:592-603.
 
Ek, W., S. Marklund, A. Ragavendran, P. Siegel, W. Muir, and O. Carlborg. 2012. Generation of multi-locus chicken introgression line to study the effects of genetic interactions on metabolic phenotypes in chickens. Frontiers in Genet. Arch.10.3389/fgene.2012.00029.
 
Zhao, X. L., C. F. Honaker, and P. B. Siegel. 2012. Phenotypic responses of chickens to long-term selection for high or low antibody titers to sheep red blood cells. Poult. Sci. 91:1047-1056.
 
Yalcin, S., S. Ozkan, P. Siegel, C. Yenisey, and M. Aksit. 2012. Manipulation of incubation temperatures to increase cold resistance of broilers: Influence on embryo development, organ weights, hormones, and body composition. J. Poult. Sci. 49:133-139.
 
Albrecht, H. N., P. B. Siegel, F. W. Pierson, M. L. McGilliard, and R. M. Lewis. 2012. Reproductive soundness is higher in chickens selected for low as compared to high antibody response. Poult. Sci. 91:1796-1803.
 
Zhao, X. L., P. B. Siegel, Y. P. Liu, Y. Wang, E. R. Gilbert, Q. Zhu, and L. Zhang. 2012. Housing system affects broiler characteristics of local Chinese breed reciprocal crosses. Poult. Sci. 91:2405-2410.
 
Newmyer, B. A., W. Nandar, R. I. Webster, E. Gilbert, P. B. Siegel, and M. A. Cline. 2013. Neuropeptide Y is associated with changes in appetite-associated hypothalamic nuclei but not food intake in a hypophagic avian model. Behav. Brain Res. 236:327-331.