Digestible methionine+cysteine in the diet of commercial layers and its influence on the performance, quality, and amino acid profile of eggs and economic evaluation

Carvalho, Terciane Sabadini; Sousa, Lorena Salim; Nogueira, Flávia Aparecida; Vaz, Diêgo Pereira; Saldanha, Mariana Masseo; Triginelli, M.V.; Pinto, Marcos Franke; Baião, N.C.; Lara, L.J.C.

doi:10.3382/ps/pey036

Cited by 20 publications

(13 citation statements)

References 22 publications

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“…Regarding internal egg quality, birds fed RP-Cit tended to have higher Haugh unit but lower shell breaking strength and lower shell thickness compared to other treatment groups in the current study. Carvalho et al (2018) pointed out that dietary AA requirement for egg production, eggshell, and egg internal quality could vary considerably. This fact might explain the contradictory effects of Cit supplementation on egg quality parameters in the current study.…”

Section: Discussionmentioning

confidence: 99%

Response of laying hens to L-arginine, L-citrulline and guanidinoacetic acid supplementation in reduced protein diet

et al. 2021

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A study was conducted with Hy-Line Brown laying hens to examine the effects of reduced protein diet, deficiency of arginine (Arg), and addition of crystalline Arg, citrulline (Cit) and guanidinoacetic acid (GAA) as substitutes for Arg. Hen performance, egg quality, serum uric acid, liver and reproductive organ weights, and energy and protein digestibility were measured using a completely randomized design with 5 treatments. Treatments were a standard diet (17% protein diet; SP), a reduced diet (13% protein diet deficient in Arg; RP) and RP with added Arg (0.35%, RP-Arg), GAA (0.46% equivalent to 0.35% Arg, RP-GAA) or Cit (0.35%, RP-Cit) to the level of SP. It was hypothesized that performance would decrease with Arg deficient RP diet and the addition of GAA or Cit in RP would allow birds to perform similar or greater than Arg-added RP treatment. The experiment was conducted from 20 to 39 wk of age but the treatment effect was seen only after 29 wk of age. The birds offered RP had reduced egg and albumin weights ( P < 0.01), lower yolk color score ( P < 0.01), lower protein intake and excretion ( P < 0.01) than those offered SP. When Arg or Cit were added to RP to make them equivalent to SP, feed intake (FI) and egg production were not different than those of RP ( P > 0.05). The birds offered RP-GAA decreased FI and egg production ( P < 0.01) compared to those offered RP. The addition of Arg, Cit or GAA to the RP had no effect on egg quality parameters, protein and energy digestibilities ( P > 0.05). However, birds offered the RP-Cit diet tended to have higher Haugh unit ( P = 0.095) and lower shell breaking strength ( P = 0.088) compared to all other treatments while those offered RP-GAA had higher energy digestibility ( P < 0.05) than all other groups but RP. The limited performance response of hens fed RP with added Arg, GAA, or Cit may be due to deficiency of some other nutrients in RP such as phenylalanine, potassium or non-essential amino acids and other components of soybean meal in the diet.

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Section: Discussionmentioning

confidence: 99%

Response of laying hens to L-arginine, L-citrulline and guanidinoacetic acid supplementation in reduced protein diet

et al. 2021

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“…These effects are mainly related to the source of amino acids in the feed. The addition of free Met or Cys to the diet of hens had no effect on the Met or Cys content of the egg (Csonka et al, 1947;Carvalho et al, 2018), but those in peptide bondage could increase their level in yolk (Csonka, 1950).…”

Section: Discussionmentioning

confidence: 99%

Dietary intake of broiler breeder hens during the laying period affects amino acid and fatty acid profiles in eggs

Yang

et al. 2019

R. Bras. Zootec.

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The objective of this study was to evaluate the effects of maternal dietary intake on the amino acid and fatty acid contents in eggs during the laying period. An experiment with a 2×2 factorial design was conducted with two maternal dietary intake levels (100 and 75% of dietary intake recommended by the Chinese Ministry of Agriculture) and two broiler lines (fat and lean line). A total of 384 hens of fat line and 384 hens of lean line at 23 weeks of age were included in the experiment. Each line was randomly divided into two treatments (n = 192 in each treatment, with 12 replications), and each replication included 16 birds. The treatments were LN (lean line and normal maternal dietary intake, n = 192), LL (lean line and low maternal dietary intake, n = 192), FN (fat line and normal maternal dietary intake, n = 192), and FL (fat line and low maternal dietary intake, n = 192). The amino acid and fatty acid contents in eggs were tested (50 weeks of age). The fat line had higher levels of arginine, aspartic acid, glycine, histidine, leucine, methionine, and threonine in the egg albumen than the lean line. Low maternal dietary intake increased the cystine deposition in egg yolks. There were interactions between maternal dietary intake and line on the deposition of trans-oleic acid, docosanoic acid, and total fatty acid in egg yolks. Low maternal dietary intake increased the deposition of tetradecenoic and linolenic acids and the ratio of total polyunsaturated fatty acids to total saturated fatty acid in egg yolks but decreased the deposition of docosanoic acid. Maternal dietary intake and line affect the amino acid and fatty acid profiles in eggs.

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“…Likewise, EW was higher than that reported by Morales et al (2018b) (61.14-67.49 g) for Isa Brown SCLH of 76-96 weeks old. The highest methionine content (about 5%) can be found in albumins, mainly egg albumin, which is one reason for its high demand in poultry (Carvalho et al, 2018).…”

Section: Production Parametersmentioning

confidence: 99%

Multivariate modeling strategies to predict nutritional requirements of essential amino acids in semiheavy second-cycle hens

Morales-Suárez¹,

Ospina-Rojas²,

Méndez-Arteaga³

et al. 2021

Revista Brasileira De Zootecnia

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Non-ruminantsFull-length research article Multivariate modeling strategies to predict nutritional requirements of essential amino acids in semiheavy second-cycle hens ABSTRACT -An experiment with 23 diets was performed to evaluate the effect of digestible lysine (Lys), digestible methionine + cysteine (Met+Cys), and digestible threonine (Thr) on egg production of H&N Brown second-cycle laying hens (SCLH) for 20 weeks (92-111 weeks of age) in cages under environmental conditions. Body weight (BW), feed intake (FI), feed conversion ratio (FCR), egg weight (EW), number of hen-housed eggs, and livability were also evaluated during the experiment. Diets were formulated from a central composite design that combined five levels of Lys, Met+Cys, and Thr ranging from 727 to 1159, 662 to 1055, and 552 to 882 mg/kg, respectively. Egg production (EP) data were evaluated through three different modeling strategies: egg production models, multivariate polynomial models, and artificial neural networks (ANN). A cascade-forward neural network with logsigmoid transfer function was selected as the best model according to goodness-offit statistics in both identification and validation data. One of the best scenarios for EP of H&N Brown SCLH under specific outdoor conditions was established at Lys, Met+Cys, and Thr levels of 1138, 1031, and 717 mg/hen• day, respectively. The ANN model may be an appropriate tool to study and predict EP of H&N Brown SCLH based on the combination of three different levels of essential digestible amino acids. The strategies included in this work may contribute to improving poultry performance based on modeling techniques to study other production parameters in terms of different nutritional requirements and productive conditions.

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Digestible methionine+cysteine in the diet of commercial layers and its influence on the performance, quality, and amino acid profile of eggs and economic evaluation

Cited by 20 publications

References 22 publications

Response of laying hens to L-arginine, L-citrulline and guanidinoacetic acid supplementation in reduced protein diet

Response of laying hens to L-arginine, L-citrulline and guanidinoacetic acid supplementation in reduced protein diet

Dietary intake of broiler breeder hens during the laying period affects amino acid and fatty acid profiles in eggs

Multivariate modeling strategies to predict nutritional requirements of essential amino acids in semiheavy second-cycle hens

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