[Adamski M., Kuźniacka J., Banaszak M., Wegner M.(2016a). The analysis of meat traits of Sussex cockerels and capons (S-11) at different ages. Poultry Sci., 95: 125–132.10.3382/ps/pev30826614680]Search in Google Scholar
[Adamski M., Kuźniacka J., Banaszak M.(2016b). The effects of strain and caponisation on carcass and meat traits of cockerels aged twenty weeks. Ann. Anim. Sci., 16: 1227–1239.10.1515/aoas-2016-0049]Search in Google Scholar
[Amorim A., Rodrigues S., Pereira E., Valentim R., A.Teixeira A.(2016). Effect of caponisation on physicochemical and sensory characteristics of chickens. Animal, 10: 978–986.10.1017/S1751731115002876]Search in Google Scholar
[AOAC(2000). Official methods of analysis. 17th ed. Gaithersburg: AOAC International.]Search in Google Scholar
[Augustyńska-Prejsnar A., Sokołowicz Z.(2014). Factors affecting the sensory quality of broiler chicken meat (in Polish). Wiad. Zoot., 2: 108–116.]Search in Google Scholar
[Baryłko-Pikielna N., Matuszewska I.(2009). Sensory testing of food (in Polish). Wyd. Nauk. PTTZ, 367 pp.]Search in Google Scholar
[Calik J.(2014). Capon production – breeding stock, rooster castration, rearing methods, and meat quality. Ann. Anim. Sci., 14: 769–777.10.2478/aoas-2014-0050]Search in Google Scholar
[Calik J.(2015). Effect of caponizing Yellowleg Partridge (Ż-33) cockerels on body weight and meat quality. Acta Sci. Pol., Zoot., 14, 1: 51–60.]Search in Google Scholar
[Calik J., Połtowicz K., Świątkiewicz S., Krawczyk J., Nowak J.(2015). Effect of caponization on meat quality of Greenleg Partridge cockerels. Ann. Anim. Sci., 15: 541–553.10.1515/aoas-2015-0002]Search in Google Scholar
[Calik J., Krawczyk J., Świątkiewicz S., Gąsior R., Wojtyczka K., Połtowicz K., Obrzut J., Puchała M.(2017). Comparison of the physicochemical and sensory characteristics of Rhode Island Red (R-11) capons and cockerels. Ann. Anim. Sci., 17: 903–917.10.1515/aoas-2017-0002]Search in Google Scholar
[Calik J., Krawczyk J., Obrzut J.(2018). Physicochemical and sensory characteristics of meat in Sussex (S-66) cocks and capons (in Polish). Zywn-Nauk. Technol. Ja., 115: 48–58.10.15193/zntj/2018/115/232]Search in Google Scholar
[Chen K.L., Hsieh T.Y., Chiou P.W.S.(2006). Caponization effects on growth performance and lipid metabolism in Taiwan country chicken cockerels. Asian-Australas. J. Anim. Sci., 19: 438–443.10.5713/ajas.2006.438]Search in Google Scholar
[Chen K.L., Chen T.T., Lin K.J., Chiou P.W.S.(2007). The effect of caponization age on muscle characteristics in male chicken. Asian-Australas. J. Anim. Sci., 20: 1684–1688.10.5713/ajas.2007.1684]Search in Google Scholar
[CIE(2007). Draft Standard 014-4.3/E: Colorimetry – Part. 4: CIE 1976 L*a*b* colour space. Vienna, Austria: p. 8.]Search in Google Scholar
[Commission Regulation (EC) No 543/2008 of 16 June 2008 laying down detailed rules for the application of Council Regulation (EC) No 1234/2007 as regards the marketing standards for poultry meat.]Search in Google Scholar
[da Silva D.C.F., de Arruda A.M.V., Gonçalves A.A.(2017). Quality characteristics of broiler chicken meat from free-range and industrial poultry system for the consumers. J. Food Sci. Technol., 54: 1818–1826.10.1007/s13197-017-2612-x]Search in Google Scholar
[Diaz O., Rodríguez L., Torres A., Cobos A.(2010). Chemical composition and physicochemical properties of meat from capons as affected by breed and age. Span. J. Agric. Res., 8: 91–99.10.5424/sjar/2010081-1147]Search in Google Scholar
[Diaz O., Rodríguez L., Torres A., Cobos A.(2012). Fatty acid composition of the meat from Mos breed and commercial strain slaughtered at different ages. Grasas Aceites, 63: 296–302.10.3989/gya.011312]Search in Google Scholar
[Duran M.A.(2004). The effect of caponzation on production indices and carcass and meat characteristic in free-range Extremena Azul chickens. Span. J. Agric. Res., 2: 211–216.10.5424/sjar/2004022-75]Search in Google Scholar
[Folch J., Lees M., Sloane-Stanley G.H.(1957). A simple method for the isolation and purification of total lipids from animal tissues. J. Biol. Chem., 226: 497–50910.1016/S0021-9258(18)64849-5]Search in Google Scholar
[Franco D., Pateiro M., Rois D., Vázquez J.A., Lorenzo J.M.(2016). Effects of caponization on growth performance, carcass and meat quality of Mos breed capons reared in free-range production system. Ann. Anim. Sci., 15: 909–929.10.1515/aoas-2016-0009]Search in Google Scholar
[Gesek M., Zawacka M., Murawska D.(2017). Effects of caponization and age on the histology, lipid localization, and fiber diameter in muscles from Greenleg Partridge cockerels. Poultry Sci., 96: 1759–1766.10.3382/ps/pew451]Search in Google Scholar
[Gesek M., Murawska D., Otrocka-Domagała I., Paździor-Czapula K., Michalska K.(2019). Effects of caponization and age on the histology of the internal organs of Leghorn cockerels. Brit. Poultry Sci., 60: 176–185.10.1080/00071668.2018.1564243]Search in Google Scholar
[Grau R., Hamm R.(1953). Eine einfache Methode zur Bestimmung der Wasserbindung im Muskel. Naturwiss, 40: 29–30.10.1007/BF00595734]Search in Google Scholar
[Janicki B., Buzała M.(2013). Effect of collagen on technological quality of meat (in Polish). Zywn-Nauk. Technol. Ja., 87: 19–29.10.15193/zntj/2013/87/019-029]Search in Google Scholar
[Krawczyk J.Calik J.(2018). Quality assessment of eggs laid by hens included in programmes for the conservation of animal genetic resources (in Polish). Zywn-Nauk. Technol. Ja., 116: 140–150.10.15193/zntj/2018/116/252]Search in Google Scholar
[Krawczyk J., Obrzut J., Calik J.(2018). Effects of genotype and sterilization of chickens on growth rate, slaughter yield, whole poultry colour and physicochemical properties of poularde meat obtained from a hybrid breed of conservative chickens and meat roosters. Europ. Poultry Sci., 82: 1–14.10.1399/eps.2018.243]Search in Google Scholar
[Krawczyk J., Obrzut J., Świątkiewicz S., Calik J.(2019). The effect of slaughter age and the diet in the final growth phase of poulards on productivity and meat quality. Ann. Anim. Sci., 19: 499–516.10.2478/aoas-2019-0012]Search in Google Scholar
[KwiecieńM., Kasperek K., Grela E., Jeżewska-Witkowska G.(2015). Effect of caponisation on the production performance, slaughter yield and fatty acid profile of muscles of greenleg Partridge cocks. J. Food Sci. Technol., 52: 7227–7235.10.1007/s13197-015-1856-6]Search in Google Scholar
[KwiecieńM., Kasperek K., Tomaszewska E., Muszyński S., Jeżewska-Witkowska G., Winiarska-Mieczan A., Grela E., Kamińska E.(2018). Effect of breed and caponisation on the growth performance, carcass composition, and fatty acid profile in the muscles of Greenleg Partridge and Polbar breeds. Braz. J. Poultry Sci., 20: 583–594.10.1590/1806-9061-2018-0753]Search in Google Scholar
[Lin C.Y., Hsu J.C.(2002). Effect of surgical caponization on growth performance, fiber diametr and some physical properties of muscles in Taiwan country chicken cockerels. Asian-Australas. J. Anim. Sci., 15: 401–405.10.5713/ajas.2002.401]Search in Google Scholar
[Lin C.Y., Hsu J.C.(2013). Comparison of skin and muscle color, muscle composition and sensory panel score of capon, slip and intact birds in Taiwan country chicken cockerels. J. Taiwan Lives. Res., 46: 187–194.]Search in Google Scholar
[Mahmud M.A., Shaba P., Gana J., Yisa H, Y., Ndagimba R.(2013). Effects of surgical caponisation on growth, carcass and some hematological parameters in cockerel chickens. Sokoto J. Vet. Sci., 11: 57–62.10.4314/sokjvs.v11i2.9]Search in Google Scholar
[Miguel J.A., Ciria J., Asenj B., Calvo J.L.(2008). Effect of caponisation on growth and on carcass and meat characteristics in Castellana Negra native Spanish chickens. Animal, 2: 305–311.10.1017/S1751731107001127]Search in Google Scholar
[Murawska D.Geesek M., Witkowska D.(2019). Suitability of layer-type male chicks for capon production. Poultry Sci., 98: 3345–3351.10.3382/ps/pez146]Search in Google Scholar
[Obrzut J.Krawczyk J., Calik J., ŚwiątkiewiczŚ., Pietras P., Utnik-BanaśK.(2018). Meat quality of poulards obtained from three conserved breeds of hens. Ann. Anim. Sci., 18: 268–281.10.1515/aoas-2017-0034]Search in Google Scholar
[Połtowicz K., Doktor J.(2012). Effect of slaughter age on performance and meat quality of slowgrowing broiler chickens. Ann. Anim. Sci., 12: 621–631.10.2478/v10220-012-0052-0]Search in Google Scholar
[Puchała M., Krawczyk J., Calik J.(2014). Influence of origin of laying hens on the quality of their carcasses and meat after the first laying period. Ann. Anim. Sci., 14: 685–696.10.2478/aoas-2014-0028]Search in Google Scholar
[Rahman M.M., Islam M.A., Ali M.Y., Khondaker M.E.A., Hossain M.M.(2004). Effect of caponization on body weight, hematological traits and blood cholesterol concentration of Nara chicken. Int. J. Poult. Sci., 3: 284–286.10.3923/ijps.2004.284.286]Search in Google Scholar
[Rikimaru K., Shiji O., Komastu M., Ishizuka J.(2009). Effects of caponization on meat quality of Hinai-jidori chicken. Int. J. Poult. Sci., 46: 345–350.10.2141/jpsa.46.345]Search in Google Scholar
[Rikimaru K., Takahashi H., Nichlos M.A.(2011). An efficient method of early caponization in slow-growing meat-type chickens. Poultry Sci., 90: 1852–1857.10.3382/ps.2010-01270]Search in Google Scholar
[Shao Y., Wu C., Li J., Zhao C.(2009). The effect of different caponization age on growth performance and blood parameters in male Tibetan chicken. Asian-Australas. J. Anim. Sci., 4: 228–236.10.3923/ajava.2009.228.236]Search in Google Scholar
[Sinanoglou V.J., Mantis F., Miniadis-Meimaroglou S., Symeon G.K., Bizelis I.A.(2011). Effects of caponisation on lipid and fatty acid composition of intramuscular and abdominal fat of medium-growth broilers. Brit. Poultry Sci., 52: 310–317.10.1080/00071668.2011.581269]Search in Google Scholar
[Sirri F., Bianchi M., Petracci M., Meluzzi A.(2009). Influence of partial and complete caponization on chicken meat quality. Poultry Sci., 88: 1466–1473.10.3382/ps.2008-00405]Search in Google Scholar
[Sokołowicz Z., Krawczyk J., Świątkiewicz S.(2016). Quality of poultry meat from native chicken breeds – a review. Ann. Anim. Sci., 16: 347–368.10.1515/aoas-2016-0004]Search in Google Scholar
[Symeon G.K., Mantis F., Bizelis I., Kominakis A., Rogdakis E.(2010). Effects of caponization on growth performance, carcass composition, and meat quality of medium growth broilers. Poultry Sci., 89: 1481–1489.10.3382/ps.2009-00411]Search in Google Scholar
[Symeon G.K., Mantis F., Bizelis I., Kominakis A., Rogdakis E.(2012). Effects of caponization on growth performance, carcass composition and meat quality of males of a layer line. Animal, 6: 2023–2030.10.1017/S1751731112001024]Search in Google Scholar
[Tor M., Estany J., Villalba D., Molina E., CubilòM.D.(2002). Comparison of carcass composition by parts and tissues between cocks and capons. Anim. Res., 51: 421–443.10.1051/animres:2002035]Search in Google Scholar
[Tor M., Estany J., Francesch D.A., CubilòM.D.(2005). Comparison of fatty acid profiles of edible meat, adipose tissues and muscles between cocks and capons. Anim. Res., 54: 413–424.10.1051/animres:2005033]Search in Google Scholar
[Tomaszewska E., Kwiecien M., Muszynski S., Dobrowolski P., Kasperek K., Blicharski T.(2016). Long-bone properties and development are affected by caponisation and breed in Polish fowls. Brit. Poultry Sci., 19: 159–170.]Search in Google Scholar
[Volk M., Malenšek J., Prevolnik M., Škrlep M., Šegula B.Čandek-Potokar M., Bavec M.(2011). Differences in carcass and meat quality between organically reared cocks and capons. Agric. Conspec. Sci., 76: 153–155.]Search in Google Scholar
[Wojtysiak D., Calik J., Krawczyk J., Wojciechowska-Puchałka J., Obrzut J., Nahajło K.(2019). Postmortem degradation of desmin and dystrophin in breast muscles from capons and cockerels. Ann. Anim. Sci., 19: 835–846.10.2478/aoas-2019-0034]Search in Google Scholar
[World Watch List for Domestic Animal Diversity, 2000 – 3rd edition FAO/UNEP, Roma.]Search in Google Scholar
[Yin H.D., Gilbert E.R., Chen S.Y., Wang Y., Zhang Z.C., Zhao X.L., Zhang Y., Zhu Q.(2013). Effect of hybridization on carcass traits and meat quality of Erlang mountainous chickens. Asian-Australas. J. Anim. Sci., 26: 1504–1510.10.5713/ajas.2013.13097]Search in Google Scholar
[Zawacka M., Murawska D., Gesek M.(2017). The effect of age and castration on the growth rate, blood lipid profile, liver histology and feed conversion in Green-legged Partridge cockerels and capons. Animal, 11: 1017–1026.10.1017/S1751731116002378]Search in Google Scholar
[Zawacka M., Gesek M., Michalik D., Murawska D.(2018). Changes in the content of edible and non-edible components and distribution of tissue components in cockerels and capons. Span. J. Agric. Res., 16:e0602.10.5424/sjar/2018161-11834]Search in Google Scholar
[Ziołecki J., Doruchowski W.(1989). Evaluation methods of slaughter value (in Polish). Wyd. COBRD, Poznań, Polska, pp. 1–22.]Search in Google Scholar