93 April 2014 Volume 93, Number 4 S R Y C T I E L N U C O E P A 11908908 S N S O O C I AT I ISSN 0032-5791 Official Journal of the Poultry Science Association Inc. EDITOR-IN-CHIEF ® T. E. Porter (2016) POULTRY SCIENCE SECTION EDITORS ASSOCIATE EDITORS (2013–2014) Environment, Well-Being, ǯȱȱǻŘŖŗśǼ I. Hanning (2016) M. Pines (2014) Ȳȱ ǯȱȱǻŘŖŗśǼ ǯȱ ěȱǻŘŖŗŚǼ T. Poole (2016) I. Estevez (2014) H. Ahmadi (2013) R. M. Hulet (2014) ǯȱȱǻŘŖŗśǼ M. M. Beck (2016) W. Alali (2016) ǯȱ ȱǻŘŖŗśǼ A. Pradhan (2014) ǯȱ ǯȱȱǻŘŖŗśǼ A. Jackson-Davis (2016) ǯȬ ǯȱȱǻŘŖŗśǼ Genetics C. Ashwell (2016) D. Jackwood (2014) ǯȱȱǻŘŖŗŚǼ J. Dodgson (2016) ǯȱȱǻŘŖŗśǼ P. A. Johnson (2016) ǯȱȱǻŘŖŗśǼ ¢ǰȱ ǰ ǯȱȱǻŘŖŗŜǼ C. Jones (2016) K. Reed (2016) Ȳȱ M. R. Bakst (2014) P. Kaiser (2014) T. B. Rodenburg (2014) R. L. Taylor Jr. (2016) R. Beckstead (2016) ǯȱ ȱǻŘŖŗśǼ G. J. M. Rosa (2016) B. R. Behrends (2016) N. Kansaku (2016) W. B. Roush (2013) ȱȱ L. Berghman (2014) E. Kebreab (2013) I. Rozenboim (2014) G. Cherian (2014) W. 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ȬDZȱȓǯǯ Organized 1908 Claimsȱȱȱȱęȱȱȱ ȱȱȱȱȦȱȱǻ ȱȱǼǯȱ- ĴDZȦȦ ǯ¢ǯ ȱȱȱȱ¢ȱȱȱȱȱǯȱȱȱȱȱȱ¢ȱ, Journals Customer ĴDZȦȦǯǯ ȱǰȱ¡ȱ¢ȱǰȱŘŖŖŗȱȱǰȱ¢ǰȱȱŘŝśŗřǰȱDZȱŞŖŖȬŞśŘȬŝřŘřȱǻȬȱȱȦ ǼȱȱşŗşȬŜŝŝȬŖşŝŝǰȱȬDZȱȓǯǯ ȚŘŖŗŚȱ¢ȱȱȱ ǯȱȱȱȱȱ¢ȱȱȱȱ¢ȱ¡ȱ¢ȱǯ POULTRY SCIENCE® Volume 93 April 2014 Number 4 CONTENTS ENVIRONMENT, WELL-BEING, AND BEHAVIOR Modelling of feather pecking behavior in beak-trimmed and non-beak-trimmed crossbred laying hens: Variance component and trait-based approach Y. Sun, E. D. Ellen, J. J. van der Poel, H. K. Parmentier, and P. Bijma ................................773 Comparative proteomic analysis of the breast muscle response to chronic corticosterone administration in broiler chickens showing long or short tonic immobility Wenyan Fu, Yujing Duan, Song Wang, Yingdong Ni, R. Grossmann, and Ruqian Zhao ..........784 Research Note Determination of space use by laying hens using kinematic analysis Joy A. Mench and Richard A. Blatchford .................................................................................794 GENETICS The potential for archiving and reconstituting valuable strains of turkey (Meleagris gallopavo) using primordial germ cells Alexander J. Wade, Nick A. French, and Grenham W. Ireland ................................................799 Genetic parameters for feather pecking and aggressive behavior in a large F2-cross of laying hens using generalized linear mixed models J. Bennewitz, S. Bögelein, P. Stratz, M. Rodehutscord, H. P. Piepho, J. B. Kjaer, and W. Bessei .............................................................................................................................810 IMMUNOLOGY, HEALTH, AND DISEASE In ovo inoculation of chicken embryos with probiotic bacteria and its effect on posthatch Salmonella susceptibility J. E. de Oliveira, E. van der Hoeven-Hangoor, I. B. van de Linde, R. C. Montijn, and J. M. B. M. van der Vossen ................................................................................................818 Dramatic differences in the response of macrophages from B2 and B19 MHC-defined haplotypes to interferon gamma and polyinosinic:polycytidylic acid stimulation Maisie E. Dawes, Lisa M. Griggs, Ellen W. Collisson, Worthie E. Briles, and Yvonne Drechsler ................................................................................................................830 Effects of dietary clays on performance and intestinal mucus barrier of broiler chicks challenged with Salmonella enterica serovar Typhimurium and on goblet cell function in vitro J. A. S. Almeida, N. P. Ponnuraj, J. J. Lee, P. Utterback, H. R. Gaskins, R. N. Dilger, and J. E. Pettigrew ....................................................................................................................839 Transcriptome analysis reveals an activation of major histocompatibility complex 1 and 2 pathways in chicken trachea immunized with infectious laryngotracheitis virus vaccine Juan Luo, José A. Carrillo, Kimberly R. Menendez, Nathaniel L. Tablante, and Jiuzhou Song .......................................................................................................................848 Fluoroquinolone resistance and molecular characterization of gyrA and parC quinolone resistance- determining regions in Escherichia coli isolated from poultry M. Vanni, V. Meucci, R. Tognetti, P. Cagnardi, C. Montesissa, A. Piccirillo, A. M. Rossi, D. Di Bello, and L. Intorre ........................................................................................................856 Chicken NK-lysin is an alpha-helical cationic peptide that exerts its antibacterial activity through damage of bacterial cell membranes Mi Ok Lee, Hyun-Jun Jang, Jae Yong Han, and James E. Womack......................................... 864 Contribution of Salmonella Enteritidis virulence factors to intestinal colonization and systemic dissemination in 1-day-old chickens Tarek M. Addwebi, Douglas R. Call, and Devendra H. Shah ....................................................871 Arginine and vitamin E improve the immune response after a Salmonella challenge in broiler chicks X. Liu, J. A. Byrd, M. Farnell, and C. A. Ruiz-Feria ...............................................................882 Research Note Exposure of juvenile Leghorn chickens to lead acetate enhances antibiotic resistance in enteric bacterial flora M. Nisanian, S. D. Holladay, E. Karpuzoglu, R. P. Kerr, S. M. Williams, L. Stabler, J. Vaun McArthur, R. Cary Tuckfield, and R. M. Gogal Jr. ....................................................891 METABOLISM AND NUTRITION Effects of low ambient temperatures and dietary vitamin C supplement on growth performance, blood parameters, and antioxidant capacity of 21-day-old broilers X. Yang, Y. H. Luo, Q. F. Zeng, K. Y. Zhang, X. M. Ding, S. P. Bai, and J. P. Wang ...........898 Effect of calcium level and phytase addition on ileal phytate degradation and amino acid digestibility of broilers fed corn-based diets A. M. Amerah, P. W. Plumstead, L. P. Barnard, and A. Kumar .............................................906 Lactobacillus sakei modulates mule duck microbiota in ileum and ceca during overfeeding F. Vasaï, K. Brugirard Ricaud, L. Cauquil, P. Daniel, C. Peillod, K. Gontier, A. Tizaoui, O. Bouchez, S. Combes, and S. Davail .......................................................................................916 Understanding