Adipokine, gut and thyroid hormone responses to probiotic application in chukar partridges (Alectoris chukar) exposed to heat stress

Abstract

The aim of this study was to investigate the effect of Lactobacillus reuteri E81 (LRE) probiotic supplementation on heat stress responses in chukar partridges (Alectoris chukar). The birds were divided into two groups, one of which was exposed to heat stress (HS). Within each group, four subgroups, each including 64 birds, were created for the three treatment doses (200, 400 or 600 mg/kg) of LRE and the control. The experiment was started with day-old birds, kept at a temperature of 25 °C or 37 °C. After a 7-day adjustment period, the LRE supplementation lasted for 35 days. The levels of different adipokines, including visfatin (VF), adiponectin (ADP), chemerin (CHEM), as well as the concentration of plasma citrulline (CIT) and the levels of thyroid hormones (T3 and T4) and thyroid-stimulating hormone (TSH) in the blood were measured at 21 and 42 days of age. A significant correlation (P < 0.01) was found between LRE supplementation and the decrease in serum VF, ADP, CIT, T3 and T4 levels in partridges exposed to HS. On the other hand, no significant relationship was found between LRE supplementation and the serum CHEM and TSH levels (P > 0.05). We concluded that the addition of 600 mg/kg LRE is beneficial in preventing intestinal damage and inflammation provoked by HS.

The Effect of Organic Hawthorn (Crataegus tanacetifolia) Fruit Vinegar Supplement on Growth Performance, Carcass Characteristics and Some Serum Parameters in Broiler Chickens Subjected to Cyclic Heat Stress

“…Heat stress (HS) is an important stress factor that causes health problems ranging from growth and developmental retardation, metabolic problems to death in poultry due to its immunosuppressive effect (Bayraktar et al, 2021). It has been reported that HS induces growth retardation, weakening of the immune system and reduced resistance to diseases in broiler chickens production, leading to decreases in product quantity and quality (Liu et al, 2019).…”

The Effects of Hawthorn (Crataegus oxyacantha) Fruit Extract on Performance, Carcass and Some Serum Parameters of Broilers Reared Under Heat-Stress Conditions[2]

“…Undesired physiological and biochemical effects are observed in broiler chickens exposed to heat stress (HS), such as a decrease in feed intake (FI), body weight gain (BWG), carcass and suppression of the immune system (Goo et al, 2019;Moustafa et al, 2021). The modernist approach to the prevention of the unfavorable effects of HS on poultry production tends to focus on diets enriched with phytogenic feed additives (Tekce et al, 2020;Bayraktar et al, 2021).…”