Consulta: subjectFacets:"Synthetic amino acids"
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Data/hora: 01/06/2024 02:11:02

Digestible tryptophan requirements of meat quails in the growth phase
Provedor de dados: 96
Autores: Ton,Ana Paula Silva; Furlan,Antonio Claudio; Martins,Elias Nunes; Batista,Eliany; Pasquetti,Tiago Junior; Toledo,Juliana Beatriz; Scherer,Carina; Saraiva,Lígia Melani.
The objective of this experiment was to estimate the digestible tryptophan (DTrp) requirements for growing meat quails. In the first experiment (1-14 days of age), 1,950 quails were distributed in a completely randomized design, with six levels of DTrp (0.27; 0.30; 0.33; 0.36; 0.39 and 0.42% of diet), five replications and 65 quails per experimental unit. There was a linear increase of feed intake, tryptophan intake, weight gain and body weight with the DTrp levels increase. In the second experiment (15-35 days of age), 1,350 quails were distributed in a completely randomized design, with six levels of DTrp (0.22; 0.25; 0.28; 0.31; 0.34 and 0.37% of diet), five replications and 45 quails per experimental unit. There was a linear increase for tryptophan...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Body composition; Nitrogen balance; Synthetic amino acids.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000500017

Crude protein reduction and digestible methionine+cystine and threonine to digestible lysine ratios in diets for Nile tilapia fingerlings
Provedor de dados: 96
Autores: Quadros,Moisés; Lanna,Eduardo Arruda Teixeira; Donzele,Juarez Lopes; Abreu,Márvio Lobão Teixeira de; Ribeiro,Felipe Barbosa; Takishita,Sylvia Sanae.
The objective of the present study was to investigate crude protein reduction and the methionine+cystine and threonine to lysine ratios in diets for reversed Nile tilapia fingerlings (Oreochromis niloticus), Thai strain. Four hundred and twenty Nile tilapia fingerlings with an average initial weight of 1.83 ± 0.02 g were placed in a completely randomized design, with five treatments, seven replications per treatment and 12 fish per experimental unit, for 37-days. Two crude protein (CP) levels were evaluated (32 and 28%). The diet with 32% CP had methionine+cystine:lysine and threonine:lysine ratios of 63 and 74%, respectively. Three diets with 28% CP had methionine+cystine:lysine and threonine:lysine ratios of 63 and 74%, 60 and 74% and 60 and 69%,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digestible lysine; Ideal protein; Oreochromis niloticus; Synthetic amino acids.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000800002

Nutritional requirements of digestible threonine for growing meat-type quails
Provedor de dados: 96
Autores: Ton,Ana Paula Silva; Furlan,Antonio Claudio; Martins,Elias Nunes; Batista,Eliany; Pasquetti,Tiago Junior; Scherer,Carina; Iwahashi,Alexandre Shigueki; Quadros,Thays Cristina Oliveira de.
The objective of this study was to estimate the nutrient requirements of digestible threonine for meat-type quails (Coturnix coturnix sp) in the growth phase. A total of 1350 not sexed meat-type quails were distributed in a completely randomized design with six threonine levels (10.80, 11.50, 12.20, 12.90, 13.60 and 14.30 g/kg as fed), five replications and 45 quails per experimental unit, from 1 to 14 days of age. The threonine levels in the diet had a quadratic effect on body weight, feed intake and weight gain. Estimates for highest body weight (79.41 g), feed intake (128.96 g/bird) and weight gain (70.73 g) were observed with diets containing 12.60 g/kg of digestible threonine. According to the LRP model, the threonine intake was estimated at 13.40...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Carcass composition; Performance; Synthetic amino acids.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000700007

Metabolizable energy requirement for starting barrow pigs (15 to 30 kg) fed on the ideal protein concept based diets
Provedor de dados: 52
Autores: Oliveira,Gisele Cristina de; Moreira,Ivan; Fraga,Alessandro Luís; Kutschenko,Marianne; Sartori,Iolanda Maria.
The objective of this study was to determine the metabolizable energy (ME) requirement for starting barrow pigs. Forty-three animals, selected for their high lean gain, were allotted in a completely randomized block design, divided in four treatments with five blocks and two animals in each experimental unit. The diet in Treatment 1 consisted of 3,264 kcal of ME/kg containing 0.96% of digestible lysine, 0.55% of digestible methionine+cystine, 0.60% of digestible threonine, and 0.188% of digestible tryptophan reaching the ideal protein pattern. The diets in Treatments 2, 3, and 4 were similar to the diet in Treatment 1; nevertheless, the levels of ME in Treatments 2, 3, and 4 were 2, 4, and 6% higher than those in Treatment 1. The lysine:ME ratio, was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Synthetic amino acids; Carcass; Performance; Plasma urea nitrogen; Energy requirements.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000600008

Levels of true digestible lisiane and metabolizable energy for growing pigs: effect on nitrogen and energy balance
Provedor de dados: 64
Autores: Chiaradia,Rafael Coutinho Finamor; Zangeronimo,Márcio Gilberto; Fialho,Elias Tadeu; Lima,José Augusto de Freitas; Rodrigues,Paulo Borges; Sousa,Raimundo Vicente de.
An experiment was conducted at the Department of Animal Husbandry of Universidade Federal de Lavras aiming to study the nitrogen and energy balance in diets with reduced crude protein rates (CP) and different levels of energy and lysine for growing pigs. 52 castrated pigs (initial weight = 36.13 ± 2.8 kg) of high genetic potential were used, housed individually in metabolism cages (experimental unit). The treatments consisted of 12 diets with three levels of metabolizable energy (ME) (3060, 3230 and 3400 kcal / kg) and four of true digestible lysine (TDL) (0.7, 0.9, 1.1 and 1, 3%) with 14% CP plus a control diet with 3230 kcal ME / kg, 1.03% TDL and 18% CP. We used a DBC in time 3x4 +1 factorial design with four replications to verify the absorbed nitrogen...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Synthetic amino acids; Nutrition; Metabolism; Ideal protein.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000600028

Corporal composition of swine feed fron 10 to 20 kg with diet containing different levels of lysine and crude protein
Provedor de dados: 64
Autores: Zangeronimo,Márcio Gilberto; Fialho,Elias Tadeu; Murgas,Luis David Solis; Sousa,Raimundo Vicente de; Lima,José Augusto de Freitas; Amaral,Níkolas de Oliveira.
The aim of this work was to verify the effect of different levels of true digestible lysine (TDL) and crude protein (CP) on diets on the carcass composition of the swine in the nursery phase. Eighty piglets Landrace x Large White, barrows and females, with initial weight of 9.1±1.2 kg and final weight of 21.5±4.8 kg, weaned at the 28 days, allotted in groups of two during 35 days in the nursery. A randomized block design in factorial 2x4 (two levels of CP - 16 and 18% - and four of TDL - 0.7; 0.9; 1.1 and 1.3%) with five repetitions was used. After weighing, one animal of each stall was sacrificed and the carcass utilized for determination of water (CWP), protein (CPP) and lipid (CLP) percentage and deposition tax of the protein (DTP) and lipid (DTL)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Synthetic amino acids; Carcass composition; Nutrition; Piglets.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542009000600024