Addition of Capsicum Oleoresin, Carvacrol, Cinnamaldehyde and Their Mixtures to the Broiler Mixed Feed I. Effects On Growth Performance, Carcass Characteristics, Intestinal Microflora, Some Blood Parameters and IGF-1 Gene Expression Levels
Abstract: The aim of this study was to evaluate the effects of dietary capsicum oleoresin (CAP, 150 mg/kg), carvacrol (CAR, 150 mg/kg), cinnamaldehyde (CIN, 150 mg/kg) and equal amount of mixtures (CAP+CAR+CIN, 50 mg/kg each, capsicum oleoresin + carvacrol + cinnamaldehyde) supplements on growth performance, carcass characteristics, intestinal microflora, some blood parameters and IGF1 gene expression levels in broiler chickens. In the experiment, four hundred Ross-308 day-old, both sexs broiler chicks were randomly dis… Show more
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Fat greenling (Hexagrammos otakii) is a kind of economic fish that is widely consumed by human, and its intensive farming technology is making important progress. However, high-density farming may cause the occurrence of diseases in H. otakii. Cinnamaldehyde (CNE) is a new feed additive for aquatic animals and has a positive effect on disease resistance. In the study, dietary CNE was evaluated on the growth performance, digestion, immune response, and lipid metabolism of juvenile H. otakii ( 6.21 ± 0.19 g). Six experimental diets were formulated containing CNE at levels of 0, 200, 400, 600, 800, and 1000 mg/kg for 8 weeks. The percent weight gain (PWG), specific growth rate (SGR), survival (SR), and feeding rate (FR) were significantly increased by including CNE in fish diets regardless of the inclusion level ( P < 0.05 ). The feed conversion ratio (FCR) was significantly decreased among the groups fed CNE supplemented diets ( P < 0.05 ). A significant decrease in hepatosomatic index (HSI) was observed in fish fed 400 mg/kg-1000 mg/kg CNE compared to the control diet ( P < 0.05 ). Fish-fed diets containing 400 mg/kg and 600 mg/kg CNE had a higher level of crude protein in muscles than the control diet ( P < 0.05 ). Moreover, the activities of lipase (LPS) and pepsin (PEP) in the intestinal were markedly increased in juvenile H. otakii-fed dietary CNE ( P < 0.05 ). Apparent digestibility coefficient (ADC) of dry matter, protein, and lipid was significantly increased with CNE supplement ( P < 0.05 ). The activities of catalase (CAT) and acid phosphatase (ACP) in the liver were markedly enhanced by including CNE in juvenile H. otakii diets compared with the control ( P < 0.05 ). The activities of superoxide dismutase (SOD) and alkaline phosphatase (AKP) in the liver were markedly enhanced in juvenile H. otakii treated with CNE supplements 400 mg/kg-1000 mg/kg ( P < 0.05 ). Additionally, the levels of total protein (TP) in the serum were markedly increased by including CNE in juvenile H. otakii diets compared with the control ( P < 0.05 ). In the CNE200, CNE400, and CNE600 groups, albumin (ALB) levels in the serum were markedly higher compared with that in the control ( P < 0.05 ). In the CNE200 and CNE400 groups, the levels of immunoglobulin G (IgG) in the serum were significantly increased compared with that the control group ( P < 0.05 ). The juvenile H. otakii-fed dietary CNE had lower triglycerides (TG) and total cholesterol (TCHO) levels in the serum than fish-fed CNE-free diets ( P < 0.05 ). The gene expression of peroxisome proliferator-activated receptor alpha (PPAR-α), hormone-sensitive lipase (HSL), and carnitine O-palmitoyltransferase 1 (CPT1) in the liver was significantly increased by including CNE in fish diets regardless of the inclusion level ( P < 0.05 ). However, fatty acid synthase (FAS), peroxisome proliferator-activated receptor gamma (PPAR-γ), and acetyl-CoA carboxylase alpha (ACCα) in the liver were markedly decreased with CNE supplements 400 mg/kg-1000 mg/kg ( P < 0.05 ). The glucose-6-phosphate1-dehydrogenase (G6PD) gene expression levels in the liver were markedly decreased compared with the control ( P < 0.05 ). The optimal supplementation level of CNE was shown by curve equation analysis to be 590.90 mg/kg.
Fat greenling (Hexagrammos otakii) is a kind of economic fish that is widely consumed by human, and its intensive farming technology is making important progress. However, high-density farming may cause the occurrence of diseases in H. otakii. Cinnamaldehyde (CNE) is a new feed additive for aquatic animals and has a positive effect on disease resistance. In the study, dietary CNE was evaluated on the growth performance, digestion, immune response, and lipid metabolism of juvenile H. otakii ( 6.21 ± 0.19 g). Six experimental diets were formulated containing CNE at levels of 0, 200, 400, 600, 800, and 1000 mg/kg for 8 weeks. The percent weight gain (PWG), specific growth rate (SGR), survival (SR), and feeding rate (FR) were significantly increased by including CNE in fish diets regardless of the inclusion level ( P < 0.05 ). The feed conversion ratio (FCR) was significantly decreased among the groups fed CNE supplemented diets ( P < 0.05 ). A significant decrease in hepatosomatic index (HSI) was observed in fish fed 400 mg/kg-1000 mg/kg CNE compared to the control diet ( P < 0.05 ). Fish-fed diets containing 400 mg/kg and 600 mg/kg CNE had a higher level of crude protein in muscles than the control diet ( P < 0.05 ). Moreover, the activities of lipase (LPS) and pepsin (PEP) in the intestinal were markedly increased in juvenile H. otakii-fed dietary CNE ( P < 0.05 ). Apparent digestibility coefficient (ADC) of dry matter, protein, and lipid was significantly increased with CNE supplement ( P < 0.05 ). The activities of catalase (CAT) and acid phosphatase (ACP) in the liver were markedly enhanced by including CNE in juvenile H. otakii diets compared with the control ( P < 0.05 ). The activities of superoxide dismutase (SOD) and alkaline phosphatase (AKP) in the liver were markedly enhanced in juvenile H. otakii treated with CNE supplements 400 mg/kg-1000 mg/kg ( P < 0.05 ). Additionally, the levels of total protein (TP) in the serum were markedly increased by including CNE in juvenile H. otakii diets compared with the control ( P < 0.05 ). In the CNE200, CNE400, and CNE600 groups, albumin (ALB) levels in the serum were markedly higher compared with that in the control ( P < 0.05 ). In the CNE200 and CNE400 groups, the levels of immunoglobulin G (IgG) in the serum were significantly increased compared with that the control group ( P < 0.05 ). The juvenile H. otakii-fed dietary CNE had lower triglycerides (TG) and total cholesterol (TCHO) levels in the serum than fish-fed CNE-free diets ( P < 0.05 ). The gene expression of peroxisome proliferator-activated receptor alpha (PPAR-α), hormone-sensitive lipase (HSL), and carnitine O-palmitoyltransferase 1 (CPT1) in the liver was significantly increased by including CNE in fish diets regardless of the inclusion level ( P < 0.05 ). However, fatty acid synthase (FAS), peroxisome proliferator-activated receptor gamma (PPAR-γ), and acetyl-CoA carboxylase alpha (ACCα) in the liver were markedly decreased with CNE supplements 400 mg/kg-1000 mg/kg ( P < 0.05 ). The glucose-6-phosphate1-dehydrogenase (G6PD) gene expression levels in the liver were markedly decreased compared with the control ( P < 0.05 ). The optimal supplementation level of CNE was shown by curve equation analysis to be 590.90 mg/kg.
In this chapter, the effects of phytogenic feed additives (PFAs) on the performance, intestinal health, microbiota, oxidative stress, antioxidant defense system, gene expression, and protein production of poultry were examined. PFAs consist of plant-derived components such as essential oils, flavonoids, saponins, phenolic compounds, and alkaloids. They have gained increasing popularity in recent years as alternative growth-promoting products to antibiotics used for animal nutrition. Studies have indicated that PFAs positively affect the overall health and productivity of poultry. Indeed, it has been observed that the use of PFAs in poultry nutrition enhances performance, modifies intestinal microbiota and morphology, and modulates gene expression and protein synthesis. Thus, the use of PFAs in poultry farming is an important alternative to increasing productivity and transitioning to a more sustainable and natural production system. However, further research is needed to understand the efficacy and safety of PFAs, interactions between different phytogenic components, and their synergistic effects. Furthermore, determining the appropriate levels and application methods is crucial to guide producers and reach a wider audience in poultry farming. In conclusion, supporting the use of phytogenic feed additives within the framework of legal regulations and standards is important for the sustainability of the industry and health of consumers.
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