This study investigated the impacts of micellar quercetin (MQ) supplementation on growth performance, meat stability, excreta gas emissions, and physiological status. During a 35-day trial, 640 Ross 308 broilers were utilized. These birds were one day old, with an average initial body weight of 43.34 ± 1.43 g. They were randomly distributed across four experimental diets, each consisting of 10 replicate pens with 16 chicks per pen. The diets included the following: control (CON) with 0% micellar quercetin (MQ), TRT1 with 0.025% MQ, TRT2 with 0.050% MQ, and TRT3 with 0.100% MQ. The results indicate that broilers fed diets with increasing levels of MQ exhibited significantly higher body weight gains (BWGs) compared to the control group (p < 0.05). There was a clear linear increase in the breast muscle percentage with higher levels of quercetin supplementation (p < 0.05), while the breast color remained consistent across all groups (p > 0.05). Both cooking loss and drip loss exhibited a linear decrease as MQ levels in the diet increased (p < 0.05). The level of aspartate aminotransferase (AST) tended to decrease with higher MQ levels. Thyroxine (T4) and lymphocyte levels also showed a linear increase with increasing MQ dosage in the diet (p < 0.05). However, no significant effects were observed on nutrient digestibility, gas emissions, or fecal microbial components (Lactobacillus, E. coli, and Salmonella) with higher levels of MQ supplementation (p > 0.05). In conclusion, augmenting quercetin levels in the diet positively influenced the BWG, breast muscle development, and meat quality parameters such as cooking loss and drip loss, with beneficial effects on blood profiles.

In a 42-day study, 195 growing pigs (Landrace × Yorkshire × Duroc) weighing 23.83 ± 1.95 kg were randomly divided into three treatments, each with 13 replicates and 5 pigs (3 barrows and 2 gilts) per pen. The treatments were control (CON)—basal diet, and basal diet with 3% and 6% almond hull as treatment (TRT) 1 and 2, respectively. The results show a significant increase ( p < 0.05) in average daily gain (ADG) and average daily feed intake (ADFI) for both treatment 1 and treatment 2 by week 6 when compared to the control group. This improvement in ADG and ADFI exhibits a consistent trend ( p < 0.10) throughout the overall trial period in comparison to the control group. Additionally, there is a tendency for enhanced gain-to-feed ratio (G:F) at the end of week 6 ( p < 0.10) in comparison to the control group and remained constant ( p > 0.05). No significant impact ( p > 0.05) on nutrient digestibility and fecal microbiota was observed. However, NH₃ gas showed a tendency to decrease ( p < 0.10). Results suggested that almond hulls could improve growth and reduce ammonia gas without adverse effects on digestion, microbiota, and fecal score.

In a 42-day study, a total of 195 [(Landrace × Yorkshire) × Duroc)] piglets with 6.52 ± 0.59 kg were randomly assigned into three treatments with 13 replication and five pigs (3 barrows and 2 gilts) per pen, which was used to evaluate the impact of weaning pig diets including almond hulls (AH)...

The study aimed to evaluate the effects of quercetin micelles (MQ) on performance, egg quality, and blood profile of laying hens. A total of 288 Hy- Line Brown laying hens were randomly assigned to one of three dietary groups, with eight replicates of 12 hens each. The hens were housed...