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Anim Biosci > Volume 37(12); 2024 > Article
Nonruminant Nutrition and Feed Processing
Animal Bioscience 2024;37(12): 2126-2136.
https://doi.org/10.5713/ab.24.0011    Published online August 22, 2024.
Storage causes protein oxidation of soybean meal and affects antioxidant status, digestive performance and meat quality of broilers
Peng Wang1  , Juanjuan Song1  , Mingfang Du1  , Chao Wen1  , Yanmin Zhou1,* 
College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
Correspondence:  Yanmin Zhou, Tel: +86-138-0516-2705, Fax: +86-025-84396067, Email: zhouym@njau.edu.cn
Received: 8 January 2024   • Revised: 8 April 2024   • Accepted: 20 May 2024
Abstract
Objective
This study investigated the protein oxidation of soybean meal (SBM) stored in a warehouse and the effects of SBM on growth performance, antioxidant status, digestive performance, intestinal morphology, and breast muscle quality of broilers.
Methods
In total, 160 one-day-old Arbor Acres Plus broilers (half male and half female) were randomly divided into two groups with ten replicates of eight birds each: The control group was served with a basal diet including SBM stored at –20°C (FSBM), and the experimental group was served with a basal diet including SBM stored in a warehouse at room temperature for 45 days (RSBM).
Results
Compared with FSBM, the protein carbonyl level in RSBM was increased, the free and total thiol levels and in vitro digestibility of protein were decreased. The RSBM decreased the serum glutathione (GSH) level and the hepatic total superoxide dismutase (T-SOD) activity at days 21 and 42 when compared with FSBM. Further, RSBM reduced the duodenal T-SOD activity, jejunal catalase (CAT), and T-SOD activities at day 21, and decreased the duodenal CAT and T-SOD activities, jejunal T-SOD activity, and ileal GSH level and T-SOD activity at days 21 and 42 when compared with FSBM. Besides, the trypsin activity and the ratio of villus height to crypt depth in small intestines of broilers at days 21 and 42 were reduced when fed with a RSBM-contained diet. Compared with FSBM, the 24-h drip loss, shear force, and 24- and 48-h cooking loss of breast muscle were increased of RSBM group, the opposite result was observed for muscle lightness at 48 h.
Conclusion
Room temperature storage for 45 days led a protein oxidation and decreased in vitro digestibility in SBM, and fed RSBM impaired growth performance, antioxidant status, and meat quality, reduced trypsin activity, and affected the small intestine morphology in broilers.
Keywords: Broilers; Protein Oxidation; Storage; Soybean Meal
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