Comparison of broiler meat quality when fed diets supplemented with neutralized sunflower soapstock or soybean oil

• Published in: Poultry science Vol. 91; no. 9; pp. 2361 - 2369
• Main Authors: Pekel, A. Y., Demirel, G., Midilli, M., Yalcintan, H., Ekiz, B., Alp, M.
• Format: Journal Article
• Language: English
• Published: Oxford, UK Oxford University Press 01.09.2012
• Subjects: Animal Feed - analysis; Animals; Chickens; Diet - veterinary; Female; Helianthus - chemistry; Hydrogen-Ion Concentration; Male; Meat - standards; Soybean Oil - chemistry; Soybean Oil - pharmacology; Thiobarbituric Acid Reactive Substances; meat quality; soybean oil; broiler; neutralized sunflower soapstock
• ISSN: 0032-5791; 1525-3171
• DOI: 10.3382/ps.2012-02272

ABSTRACT The objective of the current study was to evaluate the effect of dietary fat type and level on broiler meat quality. A 2 × 3 factorial arrangement with 2 types of fat including neutralized sunflower soapstock (NSS) and soybean oil (SO) at 3 levels of fat inclusion (2, 4, and 6%) was used with 5 replicates per treatment using 750 one-day-old broiler chicks in a completely randomized design. At the end of the study (d 36), 10 broilers from each replication were processed at a commercial slaughtering facility. Six carcasses from each replicate were used for meat quality evaluation. With the exception of 3 responses [breast meat lightness (L*) at 1 and 2 d, and redness (a*) at 5 d], there were no interactions between fat source and level. Breast meat pH at 15 min was not significantly affected by the dietary treatments. However, breast meat pH at 24 h postmortem was decreased (P < 0.01) in broilers fed the NSS. Breast meat cooking loss, shear force, and color did not differ between fat sources. Breast meat cooking loss decreased (P < 0.05) when the dietary levels of fat increased. Thigh meat TBA reactive substances were not different due to dietary fat source and level. Breast meat and skin L* value significantly decreased when the dietary levels of fat increased. Breast meat a* value was highest for the 6% fat fed birds on d 2 (P < 0.05) and d 5 (P < 0.01). Higher dietary fat levels decreased the b* values of breast meat except d 5. Breast skin yellowness (b*) value was higher (P < 0.01) for the SO-fed birds compared with NSS-fed birds. Thigh meat of the birds fed the NSS was lighter (P < 0.05) than that of the birds fed SO diets except d 5. Overall, data suggest that NSS can be used as an alternative fat source to SO with little effect on meat quality.