Role of Dietary Methionine in Poultry Production

Bunchasak, Chaiyapoom

doi:10.2141/jpsa.46.169

Cited by 133 publications

(92 citation statements)

References 106 publications

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“…Methionine plays an important role in metabolism (Shafer et al, 1998;Bunchasak, 2009). Among the essential amino acids, methionine is the most studied because it is the first limiting amino acid in the formulation of diets based on corn and soybean meal (Barbosa et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Response of laying hens to methionine + cystine intake by dilution technique

et al. 2015

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-The objective of this study was to measure the response of Dekalb White laying hens to different intakes of digestible methionine + cystine (met+cys) to optimise their performance. Two hundred eighty-eight Dekalb White laying hens, ranging in age from 33 to 48 weeks, were used in the study. The birds were randomly allocated into eight treatment (levels of met+cys and the control treatment) groups with six replicates of six hens per unit. The experimental diets consisted of seven increasing levels of met+cys (1.37, 2.75, 4.14, 5.51, 6.89, 7.92 and 8.95 g kg −1 ) and were prepared using a dilution technique. A control treatment was used to confirm that the limiting response was due to met+cys intake. Egg production, feed intake, egg weight, egg mass and feed conversion per mass were measured. The data were analysed with repeated measures and regression analyses using Broken Line and Quadratic models, as well as using the combination of both models. The different met+cys intakes influenced the studied variables; all the variables except feed conversion per mass were significantly different between the periods and levels. The digestible met+cys intakes based on the association of the Broken Line and Quadratic models to optimise the birds' response to egg mass are 671 mg/bird d for 33 to 36 weeks, 728 mg/bird d for 37 to 40 weeks, 743 mg/bird d for 41 to 44 weeks, and 770 mg/bird d for 45 to 48 weeks.

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Section: Introductionmentioning

confidence: 99%

Response of laying hens to methionine + cystine intake by dilution technique

et al. 2015

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“…In addition, it has been reported that lean chicks required a higher concentrations of sulfur-containing amino acids than fat-type chicken (Geraert et al, 1987;Leclercq et al, 1993;Alleman et al, 2000), indicating that chicks with different HW may also have different sulfur-containing amino acids requirement, which was partially evidenced in the our previous finding (Chen et al, 2013). Sulfur-containing amino acids as methionine and cysteine play vital role in the antioxidant system (Bunchasak, 2009;Tesseraud et al, 2009). Thus, the compromised antioxidant capacity of light broilers at early age may be due to a higher sulfur-containing amino acids requirement and compromised antioxidants synthesis ability, which would gradually disappeared as the feed intake increased.…”

Section: Resultsmentioning

confidence: 50%

A Comparison of Growth, Immunity and Oxidative Status of Broilers that Differ in Hatching Weight at Early Age

et al. 2015

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This study was conducted to investigate the effect of hatching weight (HW) on the growth, immunity and oxidative status of broilers for 21 d. Male chicks (Arbor Acres) were divided into 2 groups according to HW (51.30± 0.21 and 42.97±0.11 g, respectively), each of which consisted of 8 replicates of 10 birds. Chicks with high HW exhibited heavier body weight in the first two weeks (P＜0.05). Concentrations of total protein (TP), globulin (GLB) and albumin (ALB) were higher in broilers with heavier HW at d 14, 14 and 7, respectively (P＜0.05). At d 7, heavier chick exhibited a higher liver glutathione (GSH)/oxidized glutathione (GSSG) ratio (P＜0.05), which may result from simultaneously decreased GSSG content (P＝0.092). Meanwhile, a trend for decreased serum malondialdehyde (MDA) (P＝0.055) and total corticosterone (CORT) content (P＝0.086) was observed in heavier chicks. In addition, heavier chicks tended to have a higher serum GSH content at d 21 (P＝0.063). A higher HW would exert a significant effect on the body weight and oxidative status of broilers but not on nutrient digestibility and immune function at immediate posthatch, which then gradually disappeared as birds grew older.

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“…However, several researchers reported that there was no difference in bioefficacy between DLM and HMB (Reid et al, 1982;Harms and Russell, 1994;Wideman et al, 1994). In broiler chickens, moreover, we have concluded that as long as TSAA requirement is set at the commercial or maximal requirement, bioefficacy of HMB relative to DLM on a weight basis seems to be 88% Bunchasak, 2009).…”

Section: Introductionmentioning

confidence: 62%

“…Commercial laying hens require higher methionine than NRC (1994) recommendation (Liu et al, 2004a,b;Bunchasak, 2009). According to Cao et al (1992), Schutte et al (1994) and Bunchasak and Silapasorn (2005) the requirements of methionine and TSAA for maximal egg production were around 424 to 440 and 740 to 811 mg/hen/day, respectively.…”

Section: Egg Production Performancementioning

confidence: 99%

Comparative Effects of Supplemental DL-2-hydroxy-4-[methylthio] Butanoic Acid and DL-methionine in Diet on Egg Production and Quality in Laying Hens

2012

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This study was conducted to compare the effects of DL-2-hydroxy-4-[methylthio] butanoic acid (HMB) and DLmethionine (DLM) on egg production performance and egg quality of laying hens. Two hundred and eighty-eight commercial laying hens were assigned to 3 dietary treatment groups and fed the experimental diets from 34 to 46 weeks of age. The bioefficacy of HMB relative to DL-methionine (DLM) was set at 88% (weight/weight), therefore 0.115% of HMB and 0.101% of DLM were added to a basal diet. DLM and HMB supplementation increased body weight, feed intake, hen-day egg production, egg weight, FCR and egg mass (P＜0.01). These supplementations also increased yolk and albumen weight (g/egg) (P＜0.01), while DLM slightly decreased albumen weight (% of egg). Consequently, Haugh unit was poor by DLM supplementation but did not by HMB supplementation (P＜0.05). DLM supplementation significantly increased fat content in egg (g/egg and % of egg), though level of estradiol in blood was elevated by HMB supplementation. In conclusion, HMB supplementation (as 88% bioefficacy of DLM) can be used as an effective methionine source. However, mechanism of protein and fat synthesis and/or degradation of laying hens may be differed when different form of methionine is supplied.

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Role of Dietary Methionine in Poultry Production

Cited by 133 publications

References 106 publications

Response of laying hens to methionine + cystine intake by dilution technique

Response of laying hens to methionine + cystine intake by dilution technique

A Comparison of Growth, Immunity and Oxidative Status of Broilers that Differ in Hatching Weight at Early Age

Comparative Effects of Supplemental DL-2-hydroxy-4-[methylthio] Butanoic Acid and DL-methionine in Diet on Egg Production and Quality in Laying Hens

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