Adaptations of muscular biology in response to potential glucocorticoid treatment in broiler chicken

Responses of Broiler Chickens Under Dexamethasone-Induced Stress with or Without Seleno Methionine and Vitamin E Supplementation

“…Results obtained in this study align with the known impact of corticosteroids on liver function (Chen et al, 2021) and lipid metabolism (Akter et al, 2021). Higher AST levels can be indicative of potential liver damage.…”

“…This has a direct effect on protein catabolism which is further reflected in the significantly suppressed body weight gain and decreased feed efficiency in broiler chickens (Zaboli et al, 2019). Muscular dystrophy and reduced growth rate is a common outcome of DEX administration (Akter et al, 2021). While it is expected supplementation with seleno methionine and vitamin E should alleviate the effect of heat stress caused by DEX, this was not observed.…”

Influence of Betaine Hydrochloride on Glucocorticoid-induced Stressed Broiler Chickens

“…While dexamethasone negatively impacts muscle buildup, betaine may improve breast yields under chronic stress situations, comparable to control levels as demonstrated in this study. "Dexamethasone has been shown to cause muscular dystrophy in not just breast weights but other carcass cuts like thigh and drumstick as was observed in this study and other works" [19,41,37].…”

“…Betaine supplementation showed a positive effect on breast weights. Akter et al [37] previously reported that dexamethasone decreased the individual weight of breast in broiler chickens. Waldroup and Fritts [38] reported no improvements in breast meat yield of broilers fed diet containing 0.1% betaine.…”

Role of steroid growth promoter on growth performance and meat quality traits in broiler

“…The number of myofibers in breast meat was reduced in broilers administered a high dosage of DEX with feed, according to a prior study report ( Akter et al., 2021 ). Hence, it is anticipated that the lower myofiber count in the breast meat might be related to the decreased weight gain in response to dietary DEX in the broiler.…”