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| Nassiri Moghaddam,H; Kazemi Fard,M; Agah,MJ; Hosseini,SJ; Mirakzehi,MT. |
| An experiment was conducted to determine the effects of different levels of methionine, protein and tallow on productive performance and egg quality of laying hens in the late phase of production. A completely randomized design with a 3×2×2 factorial arrangement, with three levels (0.34, 0.31, and 0.27%) of methionine (MET), two levels (12.8 and 14.7%) of protein (PRO) and two levels (1 and 3%) of tallow (TAL) with constant level of linoleic acid (1.55 ± 0.02%), was used. A number of 144 Hi-Line W-36 layers from 70 to 76 wk of age was randomly distributed into 12 treatment groups with 4 replicates of 3 hens each. Egg production and egg weight were daily recorded and feed intake and egg quality traits were recorded every 2 wk. There was a significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eggshell; Egg weight; Fat; Specific gravity; Sulfur amino acids. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200010 |
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| Domingues,C H de F; Sgavioli,S; Praes,M F F M; Duarte,K F; Castiblanco,D M C; Santos,E T; Alva,J C R; Junqueira,O M. |
| One experiment was conducted to evaluate the effect of using different lysine and methionine + cystine levels on body weight recovery, performance, and egg quality of laying hens during the post-molting period. In this trial, 432 Isa Brown layers, with 72 weeks of age, were distributed in 54 cages according to a completely randomized design with six treatments and nine replicates of eight birds each. During the resting period, six diets with different digestible lysine and methionine + cystine levels were used, as follows: 0.48% digestible lysine and 0.43% methionine + cystine; 0.48% digestible lysine and 0.47% methionine + cystine; 0.48% digestible lysine and 0.52% methionine + cystine; 0.56% digestible lysine and 0.50% methionine + cystine; 0.56%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sulfur amino acids; Amino acid ratios; Forced molting; Morphometrics. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000300005 |
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| Costa,Fernando Guilherme Perazzo; Rodrigues,Valéria Pereira; Goulart,Cláudia de Castro; Vargas Junior,José Geraldo; Silva,José Humberto Vilar da; Souza,Janete Gouveia de. |
| This experiment was carried with Japanese quails in the egg production phase with the objective of determining the requirements of digestible methionine + cystine (M+C) for higher production and egg quality. A total of 240 Japanese quails were distributed in a randomized complete block design. The basal diet was supplemented with different DL-methionine levels, corresponding to digestible methionine + cystine levels of 0.55, 0.61, 0.67, 0.73 and 0.79%. The characteristics analyzed were feed intake (g/quail/day), egg production (%), egg weight (g), egg mass (g/quail/day), feed conversion (dozen eggs/egg mass and kg feed/dozen eggs), egg shell (% and g), albumen (% and g), yolk (% and g) and specific gravity (g/cm³). The digestible M+C level for Japanese... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Egg production; Egg quality; Sulfur amino acids. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001200014 |
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| Santos,Fabrício de Almeida; Donzele,Juarez Lopes; Silva,Francisco Carlos de Oliveira; Oliveira,Rita Flávia Miranda de; Abreu,Márvio Lobão Teixeira de; Saraiva,Alysson; Haese,Douglas; Kill,João Luís. |
| This study was carried out to evaluate the effects of increasing levels of digestible methionine+cystine on performance and carcass composition of high genetic potential barrows for lean deposition. Sixty-four barrows with initial weight of 95.46 ± 1.09 kg were allotted to a completely randomized block design, with four levels of digestible methionine+cystine (0.427, 0.466, 0.504, and 0.545%, corresponding to the digestible methionine+cystine:digestible lysine ratios of 57.0, 62.0, 67.0 and 73.0%, respectively), with eight replicates, and two animals per experimental unit. Experimental diets and water were provided ad libitum until the end of the experimental period when pigs reached 125.21 ± 2.49 kg. Levels of digestible methionine+cystine did not affect... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass; Genotype; Late finishing; Performance; Sulfur amino acids. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000300016 |
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| Sangali,Cleiton P; Bruno,Luís D. G; Nunes,Ricardo V; Neto,Adhemar R. de Oliveira; Pozza,Paulo C; Henz,Jefferson R; Giacobbo,Franciele C. N; Berwanger,Eveline. |
| This trial aimed to evaluate the bioavailability of DL-2-hydroxy-4-(methyl) butanoic acid (DL-HMBA) and a poly-herbal ingredient (PHI) in relation to DL-methionine (DLM) on broilers. A sample of 1100 broiler chickens of the Cobb 500 strain, both male and female, were fed either a basal diet without industrial methionine supplementation or a basal diet that was supplemented with three DL-HMBA levels (0.170, 0.340, and 0.511%) or three DLM levels (0.111, 0.221, and 0.332%) in an amount equivalent to 65% of the respective DL-HMBA levels (on a product weight basis) and three levels of PHI (0.111, 0.221, and 0.332%) in amounts equivalent to the used DLM levels from 1 to 21 days of age. The simultaneous linear regression analysis (slope ratio) revealed a... |
| Tipo: Journal article |
Palavras-chave: Dl-2-hydroxy-4-methylthio butanoic acid; Dl-methionine; Poly-herbal ingredient; Sulfur amino acids. |
| Ano: 2015 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202015000100004 |
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| Castro,Mariana Resende de; Pinheiro,Sandra Regina Freitas; Miranda,Jéssica Amaral; Costa,Leonardo da Silva; Rocha,Graziela Maria de Freitas; Oliveira,Renata Gomes de; Martins,Paulo Gustavo Macedo de Almeida. |
| ABSTRACT: The objective was to estimate the most appropriate digestible methionine + cysteine:lysine ratios for growing meat-type quails (Coturnix coturnix) from 1 to 21 days of age. Quails were fed with a basal ration deficient in digestible methionine + cysteine, with five levels of DL-methionine, in substitution of glutamic acid and starch, resulting in digestible methionine + cysteine:lysine ratios of 0.61, 0.66, 0.71, 0.76 and 0.81. Feed and methionine + cysteine intake, body weight gain, feed conversion and uniformity were assessed. From 1 to 7 days, an increasing linear effect was observed for feed and methionine + cysteine intake, body weight gain, and uniformity, and a linear decrease for feed conversion. From 8 to 14 days, the 0.70 methionine +... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coturnix coturnix; Ideal protein; Performance; Sulfur amino acids. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000600652 |
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| Porto,Neliane Galvão; Ribeiro,Felipe Barbosa; Siqueira,Jefferson Costa de; Bomfim,Marcos Antonio Delmondes; Marchão,Rafael Silva; Costa,Dayana da Conceição da. |
| ABSTRACT Methionine is an essential amino acid, and generally, the first limiting one in the diets of tambaqui, the main native fish produced in continental aquaculture in South America. However, there is a lack of information on their amino acid requirement, especially for maintenance and efficiency of utilization. The present study aimed to determine the requirement of [methionine plus cystine] for the maintenance and efficiency of utilization using tambaqui of different body weights. Two experiments were carried out using 250 tambaqui with weights of 100 and 300 g. They were distributed in a completely randomized design with four treatment groups (0.264, 0.396, 0.528, and 0.660% of digestible [Met + Cys]), five replications. The control treatment (CT)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sulfur amino acids; Colossoma macropomum; Factorial method; Amazon fish. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100302 |
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