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Fulton,  \"Avian Dis.\"  61, \"Causes of normal mortality in commercial egg-laying chickens.\" 289 (2017)","DOI":"10.1637\/11556-120816-RegR"},{"key":"1","doi-asserted-by":"crossref","unstructured":"E Decuypere, PM Hocking, K Tona, et al.  \"Worlds Poult Sci. J.\"  62, \"Broiler breeder paradox: a project report.\" 443 (2006)","DOI":"10.1017\/S0043933906001073"},{"key":"2","doi-asserted-by":"crossref","unstructured":"Y Eitan  and M Soller  \"Worlds Poult Sci J.\"  65, \"Problems associated with broiler breeder entry into lay: a review and hypothesis.\" 641 (2009)","DOI":"10.1017\/S0043933909000452"},{"key":"3","doi-asserted-by":"crossref","unstructured":"K Tona, F Bamelis, B De Ketelaere, et al.  \"Poult Sci.\"  82, \"Effects of egg storage time on spread of hatch, chick quality, and chick juvenile growth.\" 736 (2003)","DOI":"10.1093\/ps\/82.5.736"},{"key":"4","doi-asserted-by":"crossref","unstructured":"L Roque  and MC Soares  \"Poult Sci.\"  73, \"Effects of eggshell quality and broiler breeder age on hatchability.\" 1838 (1994)","DOI":"10.3382\/ps.0731838"},{"key":"5","doi-asserted-by":"crossref","unstructured":"ED Peebles, SM Doyle, CD Zumwalt, et al.  \"Poult Sci.\"  80, \"Breeder age influences embryogenesis in broiler hatching eggs.\" 272 (2001)","DOI":"10.1093\/ps\/80.3.272"},{"key":"6","doi-asserted-by":"crossref","unstructured":"K Tona, O Onagbesan, B De Ketelaere, et al.  \"J Appl Poult Res.\"  13, \"Effects of age of broiler breeders and egg storage on egg quality, hatchability, chick quality, chick weight, and chick posthatch growth to forty-two days.\" 10 (2004)","DOI":"10.1093\/japr\/13.1.10"},{"key":"7","doi-asserted-by":"crossref","unstructured":"AM Ulmer-Franco, GM Fasenko, EE O'Dea Christopher,  \"Poult Sci.\"  89, \"Hatching egg characteristics, chick quality, and broiler performance at 2 breeder flock ages and from 3 egg weights.\" 2735 (2010)","DOI":"10.3382\/ps.2009-00403"},{"key":"8","doi-asserted-by":"crossref","unstructured":"H Willemsen, N Everaert, A Witters, et al.  \"Poult Sci.\"  87, \"Critical assessment of chick quality measurements as an indicator of posthatch performance.\" 2358 (2008)","DOI":"10.3382\/ps.2008-00095"},{"key":"9","doi-asserted-by":"crossref","unstructured":"L Jacobs, E Delezie, L Duchateau, et al.  \"Poult Sci.\"  95, \"Effect of post-hatch transportation duration and parental age on broiler chicken quality, welfare, and productivity.\" 1973 (2016)","DOI":"10.3382\/ps\/pew155"},{"key":"10","doi-asserted-by":"crossref","unstructured":"WJM Landman  and JHH van Eck  \"Avian Pathol.\"  44, \"The incidence and economic impact of the Escherichia coli peritonitis syndrome in Dutch poultry farming.\" 370 (2015)","DOI":"10.1080\/03079457.2015.1060584"},{"key":"11","doi-asserted-by":"crossref","unstructured":"LL Poulsen, I Th\u00f8fner, M Bisgaard, et al.  \"Vet Microbiol.\"  207, \"Longitudinal study of transmission of Escherichia coli from broiler breeders to broilers.\" 13 (2017)","DOI":"10.1016\/j.vetmic.2017.05.029"},{"key":"12","doi-asserted-by":"crossref","unstructured":"RH Gregersen, H Christensen, C Ewers, et al.  \"Avian Pathol.\"  39, \"Impact of Escherichia coli vaccine on parent stock mortality, first week mortality of broilers and population diversity of E. coli in vaccinated flocks.\" 287 (2010)","DOI":"10.1080\/03079457.2010.495744"},{"key":"13","doi-asserted-by":"crossref","unstructured":"HGR Jones, CJ Randall, CPJ Mills,  \"Avian Pathol.\"  7, \"A survey of mortality in three adult broiler breeder flocks.\" 619 (1978)","DOI":"10.1080\/03079457808418314"},{"key":"14","unstructured":"et al.  \"BEK nr 1423 af 30\/11\/2018 Ruge\u00e6gsbekendtg\u00f8relsen - Bekendtg\u00f8relse om bek\u00e6mpelse af salmonella i ruge\u00e6gsproducerende h\u00f8ns og kalkuner samt opdr\u00e6t hertil.\"  ,  (2018)"},{"key":"15","unstructured":"et al.  \"Ross 308 parent stock: performance objectives.\"  ,  (2016)"},{"key":"17","doi-asserted-by":"crossref","unstructured":"LK Hinrichsen, R Labouriau, RM Engberg, et al.  \"Vet Rec.\"  179, \"Helminth infection is associated with hen mortality in Danish organic egg production.\" 196 (2016)","DOI":"10.1136\/vr.103614"},{"key":"18","doi-asserted-by":"crossref","unstructured":"NM Stokholm, A Permin, M Bisgaard, et al.  \"Avian Dis.\"  54, \"Causes of mortality in commercial organic layers in Denmark.\" 1241 (2010)","DOI":"10.1637\/9375-041910-Reg.1"},{"key":"19","doi-asserted-by":"crossref","unstructured":"HD Griffin, K Guo, D Windsor, et al.  \"J Nutr.\"  122, \"Adipose tissue lipogenesis and fat deposition in leaner broiler chickens.\" 363 (1992)","DOI":"10.1093\/jn\/122.2.363"},{"key":"20","doi-asserted-by":"crossref","unstructured":"RL Walzem  and S Chen  \"Adv Nutr.\"  5, \"Obesity-induced dysfunctions in female reproduction: lessons from birds and mammals.\" 199 (2014)","DOI":"10.3945\/an.113.004747"},{"key":"21","doi-asserted-by":"crossref","unstructured":"PM Hocking, R Bernard, GW Robertson,  \"Br Poult Sci.\"  43, \"Effects of low dietary protein and different allocations of food during rearing and restricted feeding after peak rate of lay on egg production, fertility and hatchability in female broiler breeders.\" 94 (2002)","DOI":"10.1080\/00071660120109908"},{"key":"22","doi-asserted-by":"crossref","unstructured":"RF Wideman, DD Rhoads, GF Erf, et al.  \"Poult Sci.\"  92, \"Pulmonary arterial hypertension (ascites syndrome) in broilers: a review.\" 64 (2013)","DOI":"10.3382\/ps.2012-02745"},{"key":"23","doi-asserted-by":"crossref","unstructured":"CY Chen, YF Huang, YJ Ko, et al.  \"Poult Sci.\"  96, \"Obesity-associated cardiac pathogenesis in broiler breeder hens: Development of metabolic cardiomyopathy.\" 2438 (2017)","DOI":"10.3382\/ps\/pex016"},{"key":"24","doi-asserted-by":"crossref","unstructured":"CY Chen, HY Lin, YW Chen, et al.  \"Poult Sci.\"  96, \"Obesity-associated cardiac pathogenesis in broiler breeder hens: pathological adaption of cardiac hypertrophy.\" 2428 (2017)","DOI":"10.3382\/ps\/pex015"},{"key":"25","doi-asserted-by":"crossref","unstructured":"IC De Jong,  \"Worlds Poult Sci J.\"  67, \"Gu\u00e9men\u00e9 D. Major welfare issues in broiler breeders.\" 73 (2011)","DOI":"10.1017\/S0043933911000067"},{"key":"26","doi-asserted-by":"crossref","unstructured":"AG. Rosales,  \"J Appl Poult Res.\"  3, \"Managing stress in broiler breeders: a review.\" 199 (1994)","DOI":"10.1093\/japr\/3.2.199"},{"key":"27","doi-asserted-by":"crossref","unstructured":"MTE Girard, MJ Zuidhof, CJ Bench,  \"Appl Anim Behav Sci.\"  188, \"Feeding, foraging, and feather pecking behaviours in precision-fed and skip-a-day-fed broiler breeder pullets.\" 42 (2017)","DOI":"10.1016\/j.applanim.2016.12.011"},{"key":"28","doi-asserted-by":"crossref","unstructured":"AB Jensen, R Palme, B Forkman,  \"Appl Anim Behav Sci.\"  99, \"Effect of brooders on feather pecking and cannibalism in domestic fowl (Gallus gallus domesticus).\" 287 (2006)","DOI":"10.1016\/j.applanim.2005.10.017"},{"key":"29","unstructured":"M Bisgaard  and A Dam  \"Nord Vet Med.\"  33, \"Salpingitis in poultry. 2. Prevalence, bacteriology, and possible pathogenesis in egg-laying chickens.\" 81 (1981)"},{"key":"30","doi-asserted-by":"crossref","unstructured":"FTW Jordan, NJ Williams, A Wattret, et al.  \"Vet Rec.\"  157, \"Observations on salpingitis, peritonitis and salpingoperitonitis in a layer breeder flock.\" 573 (2005)","DOI":"10.1136\/vr.157.19.573"},{"key":"31","doi-asserted-by":"crossref","unstructured":"FSB Kibenge, MD Robertson, GE Wilcox, et al.  \"Avian Pathol.\"  11, \"Bacterial and viral agents associated with tenosynovitis in broiler breeders in Western Australia.\" 351 (1982)","DOI":"10.1080\/03079458208436110"},{"key":"32","unstructured":"A. Brassard,  \"Can J Comp Med Vet Sci.\"  29, \"Amyloidosis in captive anseriformes.\" 253 (1965)"},{"key":"33","doi-asserted-by":"crossref","unstructured":"KH Johnson, P Westermark, K Sletten, et al.  \"Amyloid.\"  3, \"Amyloid proteins and amyloidosis in domestic animals.\" 270 (1996)","DOI":"10.3109\/13506129609014375"},{"key":"34","doi-asserted-by":"crossref","unstructured":"WJM Landman, E Gruys, RM Dwars,  \"Avian Pathol.\"  23, \"A syndrome-associated with growth depression and amyloid arthropathy in layers: a preliminary report.\" 461 (1994)","DOI":"10.1080\/03079459408419016"},{"key":"35","doi-asserted-by":"crossref","unstructured":"A Petersen, MS Chadfield, JP Christensen, et al.  \"J Clin Microbiol.\"  46, \"Characterization of small-colony variants of Enterococcus faecalis isolated from chickens with amyloid arthropathy.\" 2686 (2008)","DOI":"10.1128\/JCM.00343-08"},{"key":"36","unstructured":"M Bisgaard  and JP Christensen  \"17th World Veterinary Poultry Congress Proceedings.\"  17, \"Amyloidosis\u2014an emerging problem in broiler breeders in Denmark.\" 256 (2011)"},{"key":"37","doi-asserted-by":"crossref","unstructured":"K Ibi, T Murakami, WM Goda, et al.  \"J Vet Med Sci.\"  77, \"Prevalence of amyloid deposition in mature healthy chickens in the flock that previously had outbreaks of vaccine-associated amyloidosis.\" 1241 (2015)","DOI":"10.1292\/jvms.15-0029"},{"key":"38","doi-asserted-by":"crossref","unstructured":"N Ishiguro, T Murakami, AE Elhelaly, et al.  \"J Poult Sci.\"  51, \"Surveillance of amyloid deposition and bacterial contamination in chicken liver from meat market.\" 104 (2014)","DOI":"10.2141\/jpsa.0130028"},{"key":"39","doi-asserted-by":"crossref","unstructured":"T Murakami, Y Inoshima, E Sakamoto, et al.  \"J Comp Pathol.\"  149, \"AA amyloidosis in vaccinated growing chickens.\" 291 (2013)","DOI":"10.1016\/j.jcpa.2013.02.002"},{"key":"40","doi-asserted-by":"crossref","unstructured":"AAK Al-Rubaye, MB Couger, S Ojha, et 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Weter.\"  58, \"Occurrence and characteristics of Staphylococci isolated from poultry.\" 348 (2002)"},{"key":"45","doi-asserted-by":"crossref","unstructured":"CS Wilcox, J Patterson, HW Cheng,  \"Poult Sci.\"  88, \"Use of thermography to screen for subclinical bumblefoot in poultry.\" 1176 (2009)","DOI":"10.3382\/ps.2008-00446"},{"key":"46","unstructured":"XY Zhu  and PY Hester  \"Avian Poult Biol Rev.\"  11, \"The etiology of staphylococcosis.\" 97 (2000)"},{"key":"47","doi-asserted-by":"crossref","unstructured":"JFV Braga, CC Silva, MP Teixeira, et al.  \"Avian Pathol.\"  45, \"Vertebral osteomyelitis associated with single and mixed bacterial infection in broilers.\" 640 (2016)","DOI":"10.1080\/03079457.2016.1193843"},{"key":"48","doi-asserted-by":"crossref","unstructured":"MS Chadfield, JP Christensen, H Christensen, et al.  \"Avian Pathol.\"  33, \"Characterization of streptococci and enterococci associated with septicaemia in broiler parents with a high prevalence of endocarditis.\" 610 (2004)","DOI":"10.1080\/03079450400013089"},{"key":"49","doi-asserted-by":"crossref","unstructured":"MS Chadfield, JP Christensen, J Juhl-Hansen, et al.  \"Avian Dis.\"  49, \"Characterization of Enterococcus hirae outbreaks in broiler flocks demonstrating increased mortality because of septicemia and endocarditis and\/or altered production parameters.\" 16 (2005)","DOI":"10.1637\/7205-050604"},{"key":"50","doi-asserted-by":"crossref","unstructured":"RH Gregersen, A Petersen, H Christensen, et al.  \"Avian Pathol.\"  39, \"Multilocus sequence typing of Enterococcus faecalis isolates demonstrating different lesion types in broiler breeders.\" 435 (2010)","DOI":"10.1080\/03079457.2010.517250"},{"key":"51","doi-asserted-by":"crossref","unstructured":"BS Jortner  and CF Helmboldt  \"Vet Pathol.\"  62, \"Streptococcal bacterial endocarditis in chickens.\" 54 (1971)","DOI":"10.1177\/030098587100800107"},{"key":"52","doi-asserted-by":"crossref","unstructured":"LL Poulsen, I Th\u00f8fner, M Bisgaard, et al.  \"Vet Microbiol.\"  212, \"Staphylococcus agnetis, a potential pathogen in broiler breeders.\" 1 (2017)","DOI":"10.1016\/j.vetmic.2017.10.018"},{"key":"53","doi-asserted-by":"crossref","unstructured":"M Awan  and M Matsumoto  \"Poult Sci.\"  77, \"Heterogeneity of staphylococci and other bacteria isolated from six-week-old broiler chickens.\" 944 (1998)","DOI":"10.1093\/ps\/77.7.944"},{"key":"54","unstructured":"PT McNamee  and DC King  \"Vet Rec.\"  138, \"Endocarditis in broiler breeder rearers due to Enterococcus hirae.\" 240 (1996)"},{"key":"55","doi-asserted-by":"crossref","unstructured":"C Ekstrand, B Algers, J Svedberg,  \"Prev Vet Med.\"  31, \"Rearing conditions and foot-pad dermatitis in Swedish broiler chickens.\" 167 (1997)","DOI":"10.1016\/S0167-5877(96)01145-2"},{"key":"56","doi-asserted-by":"crossref","unstructured":"NC Kyvsgaard, HB Jensen, T Ambrosen, et al.  \"Poult Sci.\"  92, \"Temporal changes and risk factors for foot-pad 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