Effects of different rearing systems on muscle and meat quality traits of slow- and medium-growing male chickens

Almási, Anita; Andrassyne, B. G.; Milisits, Gábor; Kustosne, P.O.; Sütő, Zoltán

doi:10.1080/00071668.2015.1016478

Cited by 29 publications

(27 citation statements)

References 11 publications

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“…Indeed, the breast meat of IN chickens had both a lower pH and a higher drip loss than that of the AS chickens. Similar differences in pH between indoor and outdoor chickens were obtained by Ponte et al (2008b), Jiang et al (2011), andAlmasi et al (2015). Muscle fiber density and size may have been affected by free-range access, which could have altered the post mortem pH decline (Jiang et al, 2011).…”

Section: Discussionsupporting

confidence: 55%

Effects of free-range access on production parameters and meat quality, composition and taste in slow-growing broiler chickens

Stadig

Rodenburg

Reubens³

et al. 2016

Poultry Science

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Demand for meat from free-range broiler chickens is increasing in several countries. Consumers are motivated by better animal welfare and other product attributes such as quality and taste. However, scientific literature is not unanimous about whether free-range access influences quality, composition, and taste of the meat. Because chickens normally do not use free-range areas optimally, it is possible that provision of more suitable shelter will lead to more pronounced differences between chickens raised indoors and outdoors. In this study, an experiment with 2 production rounds of 600 slow-growing broilers each was performed. In each round, 200 chickens were raised indoors (IN), 200 had free-range access to grassland with artificial shelter (AS), and 200 had free-range access to short-rotation coppice with willow (SRC). Free-range use, feed intake, and growth were monitored, and after slaughter (d72) meat quality, composition, and taste were assessed. Free-range use was higher in SRC than in AS chickens (42.8 vs. 35.1%, P < 0.001). IN chickens were heavier at d70 than AS and SRC chickens (2.79 vs. 2.66 and 2.68 kg, P = 0.005). However, feed intake and conversion did not differ. Breast meat of chickens with free-range access was darker (P = 0.021) and yellower (P = 0.001) than that of IN chickens. Ultimate pH was lower (5.73 vs. 5.79; P = 0.006) and drip loss higher (1.29 vs. 1.09%; P = 0.05) in IN versus AS chickens. The percentage of polyunsaturated fatty acids was higher in AS than in IN meat (35.84 vs. 34.59%; P = 0.021). The taste panel judged breast meat of SRC chickens to be more tender (P = 0.003) and less fibrous (P = 0.013) compared to that of AS and IN chickens, and juicier compared to the IN chickens (P = 0.017). Overall, freerange access negatively affected slaughter weight, but positively affected meat quality, taste, and composition. Only a few differences between AS and SRC were found, possibly due to limited differences in free-range use.

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Section: Discussionsupporting

confidence: 55%

Effects of free-range access on production parameters and meat quality, composition and taste in slow-growing broiler chickens

Stadig

Rodenburg

Reubens³

et al. 2016

Poultry Science

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“…Free-range chickens reached 96% and 97% of the indoor chickens' BW. These results agree with Almasi et al (2015); however, Sales (2014) did not observe significant variability in BW between indoor and free-range systems. The stocking density did not affect the final BW.…”

Section: Resultssupporting

confidence: 82%

“…The results correspond with the findings of Almasi et al (2015) but are in contrast with the data of Funaro et al (2014), Sales (2014), and Skrivan et al (2015), who found higher meat yellowness in (Funaro et al 2014). The variability in meat colour could also be explained by the length of the experiment and the free-range period (Sales 2014), which was 27 days in this experiment and much shorter than in the studies of Funaro et al (2014) and Almasi et al (2015). The breast muscle shear force was significantly lower in free-range chickens without the effect of stocking density (Table 3).…”

Section: Resultssupporting

confidence: 79%

“…Muscle pH corresponds with meat colour; however, in the current study, none of the breast meat colour parameters was affected by the rearing system or stocking density. The results correspond with the findings of Almasi et al (2015) but are in contrast with the data of Funaro et al (2014), Sales (2014), and Skrivan et al (2015), who found higher meat yellowness in (Funaro et al 2014). The variability in meat colour could also be explained by the length of the experiment and the free-range period (Sales 2014), which was 27 days in this experiment and much shorter than in the studies of Funaro et al (2014) and Almasi et al (2015).…”

Section: Resultscontrasting

confidence: 57%

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Do rearing system and free-range stocking density affect meat quality of chickens fed feed mixture with rapeseed oil?

Skřivanová¹,

Tůmová²,

Englmaierová³

et al. 2017

CZECH J ANIM SCI

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Skřivanová V., Tůmová E., Englmaierová M., Chodová D., Skřivan M. (2017): Do rearing system and freerange stocking density affect meat quality of chickens fed feed mixture with rapeseed oil? Czech J. Anim. Sci., 62, 141−149.Recently, consumers have paid an attention to animal-friendly meat. The aim of the study was to evaluate the meat quality of breast muscles in indoor and free-range chickens with respect to the stocking density of outdoor chickens (8.3 or 4.15 birds per m 2 ) fed feed with rapeseed oil. The free-range chickens reached 96 and 97% of the final live weight of the indoor chickens and their feed : gain ratio was by 7 and 9% higher. The pasture intake had a small effect on the breast meat quality and was presumably associated with rapeseed oil in the basal diet which strongly influenced meat monounsaturated and polyunsaturated fatty acid content and reduced the effect of pasture. The free-range system and lower stocking density led to an increase in muscle fibre cross-sectional area and diameter and a higher meat shear force (P = 0.003). Concerning the meat sensory properties, the total acceptability of the meat of free-range chickens with a lower stocking density was found to be lower compared with the other groups. Results indicate a minor effect of the rearing system and free-range stocking density on chicken meat quality, and also that meat quality in experiments with free-range housing can be affected by a fat source in basal diet.

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“…This is 178 g more than in the same genotype in the present experiment. In the case of dual-purpose lines, male Tetra-H chicks from indoor and free-range housing systems weighed 1790 g after 70 days of fattening [33] and Bresse Gauloise raised under a welfare-enhanced organic system that includes access to pasture weighed 2570 g after 84 days [34]. The feed conversion of Dominant Sussex D 104 cockerels (0-84 days) in the study of Jelínková [32] was 3.1.…”

Section: Discussionmentioning

confidence: 99%

Performance and Meat Quality of Dual-Purpose Cockerels of Dominant Genotype Reared on Pasture

Englmaierová¹,

Skřivan²,

Taubner³

et al. 2020

Animals

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The culling of layer cockerels due to economic inefficiency is an ethical problem. Organic or free-range fattening of these cockerels or dual-purpose genotypes breeding is a possible solution to this problem. The aim of the study was to assess the differences in performance and meat quality characteristics in dual-purpose cockerels Dominant of three genotypes (Dominant Sussex D 104, Dominant Brown D 102 and Dominant Tinted D 723, 100 cockerels per genotype) with access to pasture. The cockerels were housed in mobile boxes on the pasture herbage from the 50th to 77th day of age (stocking density: 0.108 m2/bird). The highest body weight on the 77th day of age (p < 0.001) and the nonsignificantly lowest feed conversion was achieved by Dominant Brown D 102 cockerels (1842 g and 2.79, respectively). Non-significantly higher pasture herbage intake on the 70th day of age was recorded in genotype Dominant Brown D 102 (7.41 g dry matter (DM)/bird/day) and Dominant Tinted D 723 (7.52 g DM/bird/day). The pasture herbage contained 56.9 mg/kg DM α-tocopherol, 170.3 mg/kg DM zeaxanthin and 175.0 mg/kg DM lutein and had a favourable n6/n3 ratio (0.26). The boiled meat of cockerels Dominant Tinted D723 showed the highest tenderness based on both the sensory evaluation (p = 0.022) and the value of shear force (p = 0.049). This corresponds with a higher (p < 0.001) cross-sectional area and muscle fibre diameter in these chickens. The highest content of n3 fatty acids (eicosapentaenoic, clupanodonic and docosahexaenoic acids) in breast meat were found in Dominant Sussex D104 chickens (p < 0.001). In contrast, a significantly higher α-tocopherol content (p < 0.001) and higher oxidative stability (p = 0.012) were found in Dominant Brown D102 (4.52 mg/kg and 0.282 mg/kg) and Dominant Tinted D 723 chickens (4.64 mg/kg and 0.273 mg/kg) in comparison with the Dominant Sussex D104 genotype (3.44 mg/kg and 0.313 mg/kg). The values of the atherogenic and thrombogenic indexes were the lowest (p < 0.001) in meat from Dominant Brown D102 chickens. Moreover, a lower cholesterol content (p < 0.001) was recorded from the genotypes Dominant Brown D102 (396 mg/kg) and Dominant Tinted D723 (306 mg/kg) chickens, contrary to the Dominant Sussex D104 cockerels (441 mg/kg). It can be concluded that cockerels Dominant Brown D102 are a suitable genotype for free-range rearing due to higher performance and higher pasture herbage intake, which positively influences meat quality, whereas the meat of Dominant Sussex D104 cockerels shows higher amounts of n3 fatty acids and lower n6/n3 ratios.

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Effects of different rearing systems on muscle and meat quality traits of slow- and medium-growing male chickens

Cited by 29 publications

References 11 publications

Effects of free-range access on production parameters and meat quality, composition and taste in slow-growing broiler chickens

Effects of free-range access on production parameters and meat quality, composition and taste in slow-growing broiler chickens

Do rearing system and free-range stocking density affect meat quality of chickens fed feed mixture with rapeseed oil?

Performance and Meat Quality of Dual-Purpose Cockerels of Dominant Genotype Reared on Pasture

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