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 |
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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. |
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ISSN: | 2055-0391 2672-0191 2055-0391 2093-6281 |
DOI: | 10.5187/jast.2023.e71 |