“…In actual production, birds are usually exposed to multiple stresses, such as heat stress, crowding, or noise exposure ( Broom, 2005 ; Yerpes et al, 2021 ). Transport stress ( TS ) in chicks is an ideal multiple stressor model for poultry, involving several harmful stresses, including lack of oxygen, water or feed, crowding, body bumps, environmental pollutants, and microenvironment changes ( Zhang et al, 2014 ; Chen et al, 2022a ; Zhang et al, 2022 ). Recently, a study on children has shown that early-life stress exposure is associated with an increased risk of cardiovascular disease, such as heart failure, in adulthood ( Liang Yy Md et al, 2022 ), which suggests that the higher mortality rate of chicks induced by TS may be related to cardiac damage ( Li et al, 2017 ).…”