Effect of Different Dietary Crude Protein Levels and Citric Acid on Broiler Chickens Performance, Carcass Characteristics, Intestinal Morphology, and Blood Components

Comparative efficacy of citric acid, Spirulina platensis, and their combination as alternatives to an antibiotic growth promoter on the performances of broilers

“…This result agrees with the findings of Elbaz et al [ 3 ] and Abdel Fattah et al [ 10 ], who stated that CA supplementation in the diet significantly ( p < 0.05) reduced serum cholesterol levels, while serum albumin and uric acid levels were not affected (p > 0.05) among the groups. But this result contradicts the findings of Abd-Elsamee et al [ 33 ], who observed significant ( p < 0.05) improvement in serum cholesterol, albumin, and uric acid levels in broilers when a low CP diet was fed.…”

“…It was shown that the organic acid group performed better than the Enrofloxacin-treated group [ 7 ]. According to Abd-Elsamee et al [ 33 ], CA could alleviate the negative effects of feeding a low CP diet to broilers due to its beneficial impacts on intestinal morphology. Other studies revealed that CA supplementation did not affect weight gain [ 8 ], FI [ 3 , 4 , 7 ], and FCR [ 34 ] significantly (p > 0.05), which contradicts the present study.…”

The Effect of High Stocking Density and Dietary Protein Levels on Blood Profiles, Intestinal Bacteria, Some Immunological Parameters, Status Antioxidant, and Performance in Native Chickens

“…The results of this study suggest that the different pro- tein-level treatments did not affect LAB and coliform populations in the ileum and cecum. The study results are consistent with the findings (Abd-Elsamee et al, 2020), which reported no effect of variations in crude protein levels on the LAB population. Conversely, Cesare et al (2019) reported that a decrease in crude protein levels negatively affected the LAB population, with lower protein levels resulting in a decrease in the LAB population.…”