Effects of L-methionine on growth performance, carcass quality, feather traits, and small intestinal morphology of Pekin ducks compared with conventional DL-methionine

Zhang, Y.N.; Xu, Runsheng; Liu, Min; Ruan, D.; Kim, H.Y.; Hong, Young Gi; Chen, W.; Wang, S.; Xia, Weiguang; Luo, Xugang; Xie, Chong; Shang, Xiuguo; Zheng, Chuntian

doi:10.3382/ps/pez438

Cited by 16 publications

(12 citation statements)

References 30 publications

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“…Supplemental MET in broiler diets have been shown to improve body weight (BW), feed intake (FI), feed conversion ratio (FCR) and average daily gain [3]. Similar results were also reported in meat ducks [4]. MET is also considered the first limiting amino acid for poultry fed corn-soy bean-based diets [5] and therefore use of supplemental MET in poultry diets of conventional raised poultry to balance dietary amino acids (AA) is a common practice.…”

Section: Introductionsupporting

confidence: 58%

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Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens

Pokoo-Aikins

Timmons

Min

et al. 2021

Animals

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This study was designed to evaluate the effects of dietary supplemental DL-methionine (MET) on live performance and meat yield for broilers raised to a common weight. A total of 1552 one-day old Ross 708, sexed broilers were randomly distributed to 32 pens resulting in eight treatments (TRT) of four replicates with 44 male or 53 female/pen. A randomized complete block with a 2 × 4 (sex × 4 MET levels 0, 0.5, 1, and 2 g/kg) factorial arrangement of TRT was used. A common weight of 2400 g was approached by day 46 (1 and 2 g MET/kg feed) and day 48 (0 and 0.5 g MET/kg feed). Supplementation of MET at 1, and 2 g/kg had a lower (p < 0.01) feed conversion ratio (FCR) at day 46/48 than broilers fed 0.5 g MET/kg. Broilers without supplemental MET had the worst (p < 0.01) feed conversion and average daily gain (ADG) at day 46/48. Birds fed 0 g MET/kg of feed had lower (p < 0.05) whole eviscerated carcass without giblets (WOG), yield than birds fed 2 g MET/kg of feed. Additionally, birds fed 0 g MET/kg of feed had lower (p < 0.05) breast fillet and tender percent yields than birds fed supplemental MET. Elimination of MET from organic broiler diets resulted in reduced ADG, breast fillet yield and feed efficiency of meat yield of broilers raised to day 46/48. Reduction in MET supplementation below current levels reduced the efficiency of meat production of organic broilers raised to day 46/48.

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Section: Introductionsupporting

confidence: 58%

“…Ammonia readings and litter moisture were recorded weekly. 4 Enzyme refers to endo-1,3(4)-beta-glucanase and endo-1,4-beta-xylanase, used as a feed additive for chickens. 5 Calsporin refers to Bacillus subtilis C-3102, probiotic that is beneficial to gut health.…”

Section: Experimental Design Birds Diets and Housingmentioning

confidence: 99%

Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens

Pokoo-Aikins

Timmons

Min

et al. 2021

Animals

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“…Furthermore, Met can be added into the low protein diet of broilers to meet the requirements of total sulfur-containing amino acids, but it should be added appropriately, otherwise, it will affect the growth performance of poultry (28). Zhang found that supplemented Met in the diet could change the intestinal tissue morphology and increase the body weight of Peking ducks (29). In addition, Met can provide methyl (30,31), and use it for the methylation of toxic substances to detoxify.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Methionine Levels in Low Protein Diets on Production Performance, Reproductive System, Metabolism, and Gut Microbiota in Laying Hens

Geng

Liu

et al. 2021

Front. Nutr.

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This study investigated the effects of different levels of methionine (Met) in a low protein diet on the production performance, reproductive system, metabolism, and gut microbial composition of laying hens to reveal the underlying molecular mechanism of Met in a low protein diet on the host metabolism and gut microbial composition and function of hens. A total of 360 healthy 38-week-old Peking Pink laying hens with similar body conditions and egg production (EP) were randomly divided into four groups with nine replicates per treatment and 10 hens per replicate. The hens in each treatment group were fed low protein diets containing different levels of Met (0.25, 0.31, 0.38, and 0.47%, respectively) for 12 weeks. Feed and water were provided ad libitum throughout the trial period. The results showed that, compared with the 0.25% Met group, the final body weight (FBW), average daily gain (ADG), EP, egg weight (EW), and average daily feed intake (ADFI) in the other groups were significantly increased and feed egg ratio (FER) was decreased. Meanwhile, the EW and yield of abdominal fat (AFY) in the 0.47% Met group were higher than those in other groups. The triglyceride (TG), estradiol (E2), total protein (TP), albumin (ALB), and immunoglobulin A (IgA) in the 0.38 and 0.47% Met groups were higher than those in other groups. In addition, 16S rRNA gene sequencing revealed that there was no difference in the Sobs index, ACE index, and Shannon index among all groups. However, it is worth noting that feeding low protein diets with Met changed the gut microbial composition (e.g., the supplementation of Met increased the level of Lactobacillus and decreased the proportion of Faecalibacterium). Also, our results showed that the changes in gut microbial composition induced by the diets with different levels of Met were closely related to the changes of key parameters: ADFI, EW, FBW, TG, EM, EP, ADG, FER, and uric acid (UA). Our results highlight the role of adding an appropriate amount of Met to the low protein diet in laying hens, which could improve the gut microbial composition, production performance, reproductive system, and nutrient metabolism of laying hens. In conclusion, this study suggested that when the Met level was 0.38%, the production performance of the laying hens was pretty good.

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“…Therefore, an effective method is needed to protect intramuscular lipids against oxidative damage and to enhance meat quality. Currently, nutrition regulation has become an important means to improve meat yield and muscle quality in poultry [4,5,6]. For example, adding appropriate amino acids to the diet can improve the growth and slaughter performance of pigeons [1].…”

Section: Introductionmentioning

confidence: 99%

Effects of Dietary Supplementation with dl-Methionine and dl-Methionyl-dl-Methionine in Breeding Pigeons on the Carcass Characteristics, Meat Quality and Antioxidant Activity of Squabs

et al. 2019

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This study aimed to investigate the effects of dietary supplementation with dl-methionine (dl-Met) and dl-methionyl-dl-methionine (dl-Met-Met) in breeding pigeons on the carcass characteristics, meat quality and antioxidant activity of squabs. A total of 324 pairs of breeding pigeons were selected and allotted to 9 treatments in a completely randomized design, and the birds were fed dietary treatments for 45 d, including a Met-deficient basal diet (BD, crude protein = 15%, Met = 0.25%) and BD + 0.15%, 0.30%, 0.45%, or 0.60% dl-Met or dl-Met-Met diets. Compared with the diet fed to the BD group, dietary dl-Met or dl-Met-Met supplementation effectively increased the carcass yield, semieviscerated yield, eviscerated yield, breast muscle yield, thigh muscle yield, a* value, catalase activity, total superoxide dismutase activity and glutathione peroxidase activity, but decreased the L* value, malonaldehyde concentration, drip loss and cooking loss of squabs (p < 0.05). The relative bioavailability values of dl-Met-Met relative to those of dl-Met were 467% and 376% based on carcass yield and breast muscle yield, respectively (p < 0.001). Moreover, dl-Met-Met was more effective than dl-Met in decreasing the drip loss and improving the antioxidant activity of the breast and thigh muscles of squabs (p < 0.05). As a source of Met, dl-Met-Met, rather than dl-Met, was more beneficial to squabs.

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Effects of L-methionine on growth performance, carcass quality, feather traits, and small intestinal morphology of Pekin ducks compared with conventional DL-methionine

Cited by 16 publications

References 30 publications

Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens

Effects of Feeding Varying Levels of DL-Methionine on Live Performance and Yield of Broiler Chickens

Effects of Different Methionine Levels in Low Protein Diets on Production Performance, Reproductive System, Metabolism, and Gut Microbiota in Laying Hens

Effects of Dietary Supplementation with dl-Methionine and dl-Methionyl-dl-Methionine in Breeding Pigeons on the Carcass Characteristics, Meat Quality and Antioxidant Activity of Squabs

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