Dietary live yeast supplementation alleviates transport‐stress‐impaired meat quality of broilers through maintaining muscle energy metabolism and antioxidant status

Abstract

BACKGROUND This experiment was to investigate the effect of dietary live yeast (LY, 1 × 1010 CFU g−1) supplementation on serum metabolic parameters, meat quality as well as antioxidant enzyme activity of transported broilers. A total of 192 one‐day‐old broilers were randomly assigned to four treatments with six replicates and eight chicks per replicate: a basal diet without transportation (CON), a basal diet containing 0 (T), 500 (T + LY500) and 1000 mg kg−1 (T + LY1000) LY with 3 h of transportation after feeding for 42 days, respectively. The serum and muscle samples of broilers were collected immediately after 3 h of transportation. RESULTS A higher (P < 0.05) final body weight and average daily weight gain were observed in T + LY1000 group compared with CON and T groups. The T + LY1000 group reduced (P < 0.05) the serum lactate contents and improved (P < 0.05) the pH24h and decreased (P < 0.05) the drip loss in muscles of transported‐broilers. Also, the T + LY1000 group enhanced (P < 0.05) the total‐antioxidant capacity and reduced (P < 0.05) the malondialdehyde in serum and muscles. Besides, the messenger RNA (mRNA) expression of avian uncoupling protein (avUCP) in muscles was down‐regulated (P < 0.05) of T + LY1000 group compared with T group. CONCLUSION Dietary LY supplementation alleviates transport‐stress‐impaired meat quality of broilers through maintaining muscle energy metabolism and antioxidant status. Therefore, LY may serve as a potential protector for broilers under transport stress in the future. © 2022 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.

Dietary Se-Enriched Cardamine enshiensis Supplementation Alleviates Transport-Stress-Induced Body Weight Loss, Anti-Oxidative Capacity and Meat Quality Impairments of Broilers

“…In addition, the transportation time and distance often lead to different levels of body weight loss [ 19 ]. Our study showed that the 3 h transportation treatment increased the body weight loss of broilers, which is consistent with previous studies [ 5 , 20 ]. Meanwhile, dietary SeCe supplementation alleviated the body weight loss of broilers under transportation stress.…”

Meta-Analysis: Effect of Transport Distance on Physiological Conditions, Pre-Slaughter, and Broiler Meat Quality

“…According to Pan et al (2018), damage to muscle cells due to decreased pH can increase drip loss and oxidation, which changes the color of the meat. It is in line with He et al (2022) opinion that lower meat pH causes actin and myosin in muscles to condense and contract into granules, destroys a spatial structure, reduces water-holding capacity, and has a direct impact on meat color. Therefore, oxidation which changes the condition of the red meat pigment to yellowish, can occur.…”

“…Myofibrillar reflection contributes to the difference in light scattering between PSE and dark, firm, and dry; this is related to pH, which significantly impacts the clarity of light on the chicken breast and causes the meat to appear pale in parts with a lower pH. Under He et al (2022) opinion, lightness increases with a decrease in the pH value.…”

Intracellular Calcium Overload and Activation of CaMKK/AMPK Signaling Are Related to the Acceleration of Muscle Glycolysis of Broiler Chickens Subjected to Acute Stress

“…HK, PK, and PFK are the key rate-limiting enzymes involved in the glycolytic metabolism pathway. He et al found that the activities of HK and PK increased significantly in broilers subjected to preslaughter transport. Herein, the activities of HK, PK, and PFK were found to be higher in preslaughter transport-induced PSE-like muscle of broilers.…”