Changes in the content of edible and non-edible components and distribution of tissue components in cockerels and capons

Magdalena Zawacka, Michal Gesek, Danuta Michalik, Daria Murawska

Abstract


The aim of this study was to determine the effects of castration and age on the content of edible and non-edible components, and the distribution of tissue components in the carcasses of cockerels and capons. The study was conducted on 200 birds (Green-legged Partridge), divided into two sex categories (with 5 replications per group and 20 birds per replication), raised to 28 wk of age. At 8 wk of age, 100 birds were surgically castrated and afterwards at 12 wk of age and at four-wk intervals, 10 intact cockerels and 10 capons were selected randomly and slaughtered. Cockerels, compared with capons, were characterized by a higher proportion of edible components at 24 and 28 wk of age, and a more desirable carcass tissue composition due to a higher content of lean meat in total body weight (BW). Capons had higher abdominal fat content than cockerels, which resulted in a higher percentage of non-edible components in their BW at 24 and 28 wk of age. Differences in the distribution of lean meat in the carcass were noted from 20 wk of age in both castrated and intact birds. The content of breast muscles increased in capons, and the content of leg muscles (thigh and drumstick) increased in cockerels. The results of this study indicate that in view of the optimal lean meat content of the carcass and the optimal distribution of major tissue components, Green-legged Partridge capons should be fattened for a maximum period of 24 wk.


Keywords


caponization; age; poultry production; tissue composition

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References


Adamski M, Kuźniacka J, Banaszak M, 2016. Effects of the origin and caponisation on carcass and meat traits in cockerels and capons aged 18 weeks. Acta Vet Brno 85: 395-403. https://doi.org/10.2754/avb201685040395

Amorim A, Rodrigues S, Pereira E, Valentim R, Teixeira A, 2016. Effect of caponisation on physicochemical and sensory characteristics of chickens. Animal 10 (6): 978-986. https://doi.org/10.1017/S1751731115002876

Calik J, 2008. Comparison of productivity and egg quality parameters in Greenleg Partridge (Z-11) and Yellowleg Partridge (Ż-33) conservation breeds of hens. Rocz Nauk PTZ 4: 255-261.

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. https://doi.org/10.1515/aoas-2015-0002

Chen KL, Chen TT, Lin KJ, Chiou PWS, 2007. The effects of caponization age on muscle characteristics in male chicken. Asian-Australas J Anim Sci 11: 1684-1688. https://doi.org/10.5713/ajas.2007.1684

Chen SY, Li TY, Tsai ChH, Lo DY, Chen KL, 2014. Gender, caponization and exogenous estrogen effects on lipids, bone and blood characteristics in Taiwan country chickens. J Anim Sci 85: 305-312. https://doi.org/10.1111/asj.12147

Díaz O, Rodríguez L, Torres A, Cobos A, 2010. Chemical composition and physico-chemical properties of meat from capons as affected by breed and age. Span J Agric 8: 91-99. https://doi.org/10.5424/sjar/2010081-1147

EC, 2008. 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. 16 June 2008.

Eleroğlu E, Yıldırım A, Duman M, Şekeroğlu A, 2017. Edible giblets and bone mineral characteristics of two slow-growing chicken genotypes reared in an organic system. Rev Bras Cienc Avic 19 (1): 1-6. https://doi.org/10.1590/1806-9061-2016-0358

Franco D, Pateiro M, Rois D, Vázquez JA, Lorenzo JM, 2016. Effects of caponization on growth performance, carcass and meat quality of Mos Breed capons reared in free-range production system. Ann Anim Sci 16 (3): 909-929. https://doi.org/10.1515/aoas-2016-0009

Gesek M, Zawacka M, Murawska D, 2017. Effects of caponization and age on the histology, lipid localization and fiber diameter in muscles from Green-legged Partridge cockerels. Poult Sci 96 (6): 1759-1766. https://doi.org/10.3382/ps/pew451

Krawczyk J, Calik J, 2006. Egg quality in free-range hens. Pol J Natur Sci 3: 433-438.

Kwiecień M, Kasperek K, Grela E, Witkowska-Jeżewska G, 2015. Effect of caponization on the production performance, slaughter yield and fatty acid profile of muscles of Greenleg Partridge cocks. J Food Sci Technol 52: 7227-7235. https://doi.org/10.1007/s13197-015-1856-6

Mahmud M, Shaba P, Gana J, Yisa H, Ndagimba R, 2013. Effects of surgical caponisation on growth, carcass and some haematological parameters in cockerel chickens. Sokoto J Vet Sci 11: 57-62. https://doi.org/10.4314/sokjvs.v11i2.9

Michalczuk M, Jóźwik A, Damaziak K, Zdanowska–Sąsiadek Ż, Marzec A, Gozdowski D, Strzałkowska N, 2016. Age-related changes in the growth performance, meat quality, and oxidative processes in breast muscles of three chicken genotypes. Turk J Vet Anim Sci 40: 389-398. https://doi.org/10.3906/vet-1502-64

Miguel JA, Ciria J, Asenj B, Calvo JL, 2008. Effect of caponisation on growth and on carcass and meat characteristics in Castellana Negra native Spanish chickens. Animal 2: 305-311. https://doi.org/10.1017/S1751731107001127

Murawska D, 2005. Distribution of tissue components in carcasses of broilers and layers. Rocz Nauk PTZ. 11c1: 183-191 (in Polish, English abstract).

Murawska D, 2013a. Age-related changes in the percentage content of edible and non-edible components in Turkeys. Poult Sci 92 (1): 255-264. https://doi.org/10.3382/ps.2012-02611

Murawska D, 2013b. The effect of age on the growth rate of tissues and organs and the percentage content of edible and inedible components in Polish Koluda White Geese. Poult Sci 92 (5): 1400-1407. https://doi.org/10.3382/ps.2012-02829

Murawska D, Bochno R, 2007. Comparison of the slaughter quality of layer-type cockerels and broiler chickens. J Poult Sci 44: 105-110. https://doi.org/10.2141/jpsa.44.105

Murawska D, Bochno, Michalik, D, Janiszewska M, 2005. Age-related changes in the carcass tissue composition and distribution of meat and fat with skin in carcasses of laying-type cockerels. Archiv Geflügelkd 69: 135-139.

Murawska D, Kleczek K, Wawro K, Michalik D, 2011. Age-related changes in the percentage content of edible and non-edible components in broiler chickens. Asian-Australas J Anim Sci 24: 532-539. https://doi.org/10.5713/ajas.2011.10112

Muriel Durán A, 2004. The effect of caponization on production indices and carcass and meat characteristics in free-range Extremeña Azul chickens. Span J Agric Res 2 (2): 211-216. https://doi.org/10.5424/sjar/2004022-75

Muszyński S, Kwiecień M, Tomaszewska E, Swietlicka I, Dobrowolski P, Kasperek K, Jeżewska-Witkowska G, 2016. Effect of caponization on performance and quality characteristics of long bones in Polbar chickens. Poult Sci 96 (2): 491-500. https://doi.org/10.3382/ps/pew301

Padhi MK, 2016. Importance of indigenous breeds of chicken for rural economy and their improvements for higher production performance. Scientifica 2016: Art 2604685. https://doi.org/10.1155/2016/2604685

Rahman MM, Islam MA, Ali MY, Khondaker MEA, Hossain MM 2004. Effect of caponisation on body weight, hematological traits and blood cholesterol concentration of Nara chicken. Int J Poult Sci 3: 284-286. https://doi.org/10.3923/ijps.2004.284.286

Rikimaru K, Shiji O, Komastu M, Ishizuka J, 2009. Effects of caponization on meat quality of Hinai-jidori chicken. J Poult Sci 46: 345-350. https://doi.org/10.2141/jpsa.46.345

Sinanoglou VJ, Mantis F, Miniadis-Meimaroglou S, Symeon GK, Bizelis IA, 2011. Effects of caponisation on lipids and fatty acid composition of intramuscular and abdominal fat of medium-growth broilers. Br Poult Sci 52: 310-317. https://doi.org/10.1080/00071668.2011.581269

Sokołowicz Z, Krawczyk J, Świątkiewicz S, 2016. Quality of poultry meat from native chicken breeds - A review. Ann Anim Sci 16: 347-368. https://doi.org/10.1515/aoas-2016-0004

Symeon GK, Mantis F, Bizelis I, Kominakis A, Rogdakis E, 2010. Effects of caponization on growth performance, carcass composition and meat quality of medium growth broilers. Poult Sci 89: 1481-1489. https://doi.org/10.3382/ps.2009-00411

Terčič D, Brus M, Volk M, Holcman A, 2007. Growth rate and carcass traits in three genotypes of capons. Biotech Anim Husbandry 23: 503-509. https://doi.org/10.2298/BAH0701503T

Tomaszewska E, Kwiecień M, Muszyński S, Dobrowolski P, Kasperek K, Blicharski T, Jeżewska-Witkowska G, Grela ER, 2017. Long-bone properties and development are affected by caponisation and breed in Polish fowls. Brit Poult Sci 58 (3): 312-318. https://doi.org/10.1080/00071668.2017.1280770

Tor M, Estany J, Villalba D, Molina E, Cubilo D, 2002. Comparison of carcass composition by parts and tissues between cocks and capons. Anim Res 51: 421-431. https://doi.org/10.1051/animres:2002035

Zawacka M, Murawska D, Michalik D, 2014. Selected slaughter traits of Zielononóżka Kuropatwiana and Rhode Island red capons. Proc XXVI Int Poult Symp PB WPSA, Kazimierz Dolny nad Wisłą, Poland. Sept 08-09. pp: 152-153.

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 (6): 1017-1026. https://doi.org/10.1017/S1751731116002378

Ziołecki J, Doruchowski W, 1989. Methods for slaughter quality evaluation in poultry. COBRD, Poznań: 1-22. (in Polish).




DOI: 10.5424/sjar/2018161-11834