Standardized ileal digestible methionine requirements for 22 to
                    29-d-old male broilers based on the growth performance and feather
                    development

An, Su Hyun; Kong, Changsu

doi:10.5187/jast.2023.e139

Cited by 2 publications

(1 citation statement)

References 41 publications

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“…Using these data, body weight gain (BWG), feed intake (FI), and gain-to-feed ratio (G:F) were calculated by correcting the mortality of birds [13]. The experimental diets were ground in a mill grinder (CT293 Cyclotec, Foss Ltd., Denmark) through a 1.0-mm screen for nutrient analysis.…”

Section: Measurement and Chemical Analysesmentioning

confidence: 99%

Growth performance of broiler chickens fed diets containing granulated L-methionine compared with DL-methionine

Yoon,

An,

Kim

et al. 2024

J Anim Sci Technol

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Section: Measurement and Chemical Analysesmentioning

confidence: 99%

Growth performance of broiler chickens fed diets containing granulated L-methionine compared with DL-methionine

Yoon,

An,

Kim

et al. 2024

J Anim Sci Technol

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Dietary L-Methionine modulates the gut microbiota and improves the expression of tight junctions in an in vitro model of the chicken gastrointestinal tract

Kwak,

Kang,

Eor

et al. 2024

anim microbiome

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Background The poultry industry encounters a number of factors that affect growth performance and productivity; nutrition is essential for sustaining physiological status and protecting against stressors such as heat, density, and disease. The addition of vitamins, minerals, and amino acids to the diet can help restore productivity and support the body’s defense mechanisms against stress. Methionine (Met) is indispensable for poultry’s energy metabolism, physiology, performance, and feed utilization capacity. Through this study, we aimed to examine the physiological effects of methionine supplementation on poultry as well as alterations of intestinal microbiome. Methods We utilized the DL- and L- form of methionine on Caenorhabditis elegans and the FIMM (Fermentor for intestine microbiota model) in-vitro digesting system. A genomic-analysis of the transcriptome confirmed that methionine supplementation can modulate growth-related physiological metabolic pathways and immune responses in the host poultry. The C. elegans model was used to assess the general health benefits of a methionine supplement for the host. Results Regardless of the type or concentration of methionine, supplementation with methionine significantly increased the lifespan of C. elegans. Feed grade L-Methionine 95%, exhibited the highest lifespan performance in C. elegans. Methionine supplementation increased the expression of tight junction genes in the primary intestinal cells of both broiler and laying hens, which is directly related to immunity. Feed grade L-Methionine 95% performed similarly or even better than DL-Methionine or L-Methionine treatments with upper doses in terms of enhancing intestinal integrity. In vitro microbial cultures of healthy broilers and laying hens fed methionine revealed changes in intestinal microflora, including increased Clostridium, Bacteroides, and Oscillospira compositions. When laying hens were given feed grade L-Methionine 95% and 100%, pathogenic Campylobacter at the genus level was decreased, while commensal bacteria were increased. Conclusions Supplementation of feed grade L-Methionine, particularly L-Methionine 95%, was more beneficial to the host poultry than supplementing other source of methionine for maintaining intestinal integrity and healthy microbiome.

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Standardized ileal digestible methionine requirements for 22 to 29-d-old male broilers based on the growth performance and feather development

Abstract: Standardized ileal digestible methionine requirements for 22 to 29d-old male broilers based on the growth performance and feather development Running

Cited by 2 publications

References 41 publications

Growth performance of broiler chickens fed diets containing granulated L-methionine compared with DL-methionine

Growth performance of broiler chickens fed diets containing granulated L-methionine compared with DL-methionine

Dietary L-Methionine modulates the gut microbiota and improves the expression of tight junctions in an in vitro model of the chicken gastrointestinal tract

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