Dietary calcium and non-phytate phosphorus levels affect the performance, serum biochemical indices, and lipid metabolism in growing pullets

Alpiniae oxyphyllae fructus improves production performance and egg quality of laying breeder hens by regulating reproductive hormones, antioxidant function, immunity and intestinal health

“…Phosphorus was a crucial nutrient required by chickens, participating in numerous metabolic processes, as highlighted in this study ( Bello et al, 2020 ). Both calcium and phosphorus were indispensable for skeletal function and eggshell formation and maintenance ( Bello et al, 2020 ; Zhang et al, 2023 ). The addition of AOP may enhance the absorption of these minerals from the digestive system, thereby improving their utilization within the body.…”

In-depth investigation of the mechanisms of high and low residual feed intake regulating hens during the late laying period via liver and gut microbiota

“…When the liver is damaged, the normal structure of liver cells is disrupted, leading to a significant increase in ALT and AST levels in the blood. In poultry, elevated levels of LDL-C indicate disturbances in lipid metabolism, which may contribute to the occurrence of metabolic-related diseases [47] ; HDL-C, as it aids in the removal of LDL-C from the body and transports it to the liver for metabolism, is generally considered "good cholesterol" [48] . In this study, we observed that the AST concentration was significantly lower in the LRFI group than in the HRFI group, while the HDL-C content was significantly higher in the LRFI group.…”

Dietary exogenous phytase improve egg quality, reproductive hormones, and prolongs the lifetime of the aging Hy-Line brown laying hens fed nonphytate phosphorus

“…Phosphorus ( P ) is a crucial and vital nutrient in many metabolic activities, and one of the essential mineral components poultry requires. Calcium and P are critical to the formation and maintenance of skeletal function and eggshells ( Bello et al, 2020 ; Zhang et al, 2023 ). Phytic acid comprises approximately two-thirds of the total P in feed items of plant origin (cereal grains, beans, and oilseed meals).…”