The research and application of key technologies for using plant extracts to replace antibiotics and enhance poultry feed undertaken by SD BIOTECH GROUP has overall reached the international advanced level, and the research on improving the quality of livestock products using plants and their extracts is internationally leading.

In order to investigate the efficacy of stress Ning in improving the production performance and meat quality of 63d commercial broiler chickens. 300 healthy 1-day-old AA broiler chickens with similar body weight were selected and randomly divided into 2 treatments, with 5 replicates per treatment and 30 chickens per replicate (see Table 1).

To investigate the efficacy of Yanning C1 in improving the production performance and meat quality of 63d commercial broiler chickens. 300 healthy 1-day-old AA broiler chickens with similar body weight were selected and randomly divided into 2 treatments, with 5 replicates per treatment and 30 chickens per replicate (see Table 1). Treatment 1: Control group, broiler chickens were fed a regular diet (NRC recommended nutritional level) without adding any antibiotics to the diet; Treatment 2 supplemented with Yanning C1 at a dose of 500 mg/kg on the same diet as Treatment 1. Experimental chicken cage feeding, feeding pellet feed, with consistent dietary composition and nutritional levels between treatments.

In order to investigate the efficacy of stress relief in improving the production performance of commercial broiler chickens. Select 200 healthy 1-day-old AA broiler chickens with similar body weight and randomly divide them into 2 treatments, with 5 replicates per treatment and 20 chickens per replicate (see Table 1).

In order to study the effect of stress relief on improving the meat quality of commercial broiler chickens. Select 200 healthy 1-day-old AA broiler chickens with similar body weight and randomly divide them into 2 treatments, with 5 replicates per treatment and 20 chickens per replicate (see Table 1).

In order to investigate the efficacy of stress Ning in improving the immune and antioxidant properties of commercial broiler chickens. Select 200 healthy 1-day-old AA broiler chickens with similar body weight and randomly divide them into 2 treatments, with 5 replicates per treatment and 20 chickens per replicate (see Table 1).

To investigate the efficacy of Yanning C1 in improving the production performance of commercial broiler chickens. Select 200 healthy 1-day-old AA broiler chickens with similar body weight and randomly divide them into 2 treatments, with 5 replicates per treatment and 20 chickens per replicate (see Table 1). Treatment 1: Control group, broiler chickens were fed a regular diet (NRC recommended nutritional level) without adding any antibiotics to the diet; Treatment 2 supplemented with Yanning C1:250 mg/kg on the same diet as Treatment 1.

To investigate the efficacy of Yanning C1 in improving the quality of commercial broiler meat. Select 200 healthy 1-day-old AA broiler chickens with similar body weight and randomly divide them into 2 treatments, with 5 replicates per treatment and 20 chickens per replicate (see Table 1). Treatment 1: Control group, broiler chickens were fed a regular diet (NRC recommended nutritional level) without adding any antibiotics to the diet; Treatment 2 supplemented with Yanning C1:250 mg/kg on the same diet as Treatment 1.

To investigate the efficacy of Yanning C1 in improving the immune and antioxidant properties of commercial broiler chickens. Select 200 healthy 1-day-old AA broiler chickens with similar body weight and randomly divide them into 2 treatments, with 5 replicates per treatment and 20 chickens per replicate (see Table 1). Treatment 1: Control group, broiler chickens were fed a regular diet (NRC recommended nutritional level) without adding any antibiotics to the diet; Treatment 2 supplemented with Yanning C1:250 mg/kg on the same diet as Treatment 1.

The aim of this experiment is to investigate the efficacy of stress Ning in improving the apparent utilization rate of amino acids in commercial broiler chickens. 1280 healthy 1-day-old AA broiler chickens with similar body weight were selected and randomly divided into 4 treatments, with 8 replicates per treatment and 40 chickens per replicate (see Table 1).