Evaluation of the quality characteristics of nitrogen gas-stunned chicken meat and small intestine

This study aimed to confirm the applicability of the new nitrogen (N ) gas stunning method in the broiler slaughtering process by comparing the meat and small intestine quality following different stunning methods (electrical, carbon dioxide (CO ), N , and halal). Four treatments were compared: (i)...

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Veröffentlicht in:Journal of animal science and technology 2024-07, Vol.66 (4), p.792-806
Hauptverfasser: Alam, Muhammad Shahbubul, Song, Dong-Heon, Kang, Sun-Moon, Hwang, Inho, Seol, Kuk-Hwan, Cho, Soo-Hyun, Jeon, Jung-Hwan, Kim, Hyoun Wook
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Sprache:eng
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Zusammenfassung:This study aimed to confirm the applicability of the new nitrogen (N ) gas stunning method in the broiler slaughtering process by comparing the meat and small intestine quality following different stunning methods (electrical, carbon dioxide (CO ), N , and halal). Four treatments were compared: (i) electrical stunning (Elec), (ii) 80% CO gas stunning (CO -gas), (iii) 98% N gas stunning (N -gas), and (iv) the non-stunning method (halal). N gas stunning (98%) and the halal method were conducted at the pilot plant abattoir of the national institute of animal science, Korea, and electrical and 80% CO stunning were performed on the nearest commercial slaughter house. Meat pH , color (lightness, redness and yellowness), proximate composition, water holding capacity (WHC), cooking loss, and Warner-Bratzler shear force (WBSF) were measured, and in the small intestine, pH , color, thickness, and WBSF were measured. The Elec treatment showed high lightness, yellowness, and low redness in both meat and the small intestine, indicated by a pale color; the CO -gas treatment showed high redness, low lightness, and low yellowness, and the coloration of meat from the N -gas treatment was intermediate between Elec and CO -gas. For other quality traits, the N -gas showed good results and was between Elec and CO -gas. Additionally, severe stress (low pH in both meats), low WHC in meat, and cracked small intestine with numerous apertures were observed in the CO -gas, and pale colored hemorrhagic breast meat was found in the Elec. Therefore, in view of animal welfare and quality traits of meat and the small intestine, 98% N gas can be considered in broiler stunning.
ISSN:2055-0391
2672-0191
2055-0391
2093-6281
DOI:10.5187/jast.2023.e71