Consulta: subjectFacets:"Amino acid"
Registros recuperados: 37
Data/hora: 12/06/2024 05:12:35

Specific nutrient supplementation of defined serum-free medium for the improvement of CHO cells growth and t-PA production
Provedor de dados: 69
Autores: Altamirano,Claudia; Illanes,Andrés; Canessa,Rossana; Becerra,Silvana.
Recombinant CHO TF70R cells are able to grow and produce t-PA on serum-free medium BIOPRO1 (BioWhitaker Europe, Belgium). The purpose of the present study was to determine the effect of medium supplementation with vitamins, lipids, and specific amino acids on cell growth, t-PA production and biological functionality. Among vitamins, only biotin, folic acid, cobalamine and benzoic acid were required for improving growth and t-PA production. Lipid supplement allowed a significant increase cell concentration and t-PA specific activity and concentration, though its specific production rate decreased slightly. Medium supplementation with proline, serine and asparagine had also positive effects on cell growth. Besides, the addition of asparagine (even in the...
Tipo: Journal article
Palavras-chave: Amino acid; Cholesterol; Vitamins.
Ano: 2006
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000100009

Nutritional components affecting skeletal development in fish larvae
Provedor de dados: 5
Autores: Cahu, Chantal; Zambonino, Jose-luis; Takeuchi, Toshio.
Marine fish larvae undergo major functional and morphological changes during the developmental stages and several factors can interfere with the normal development of larvae and affect fry quality. Skeletal malformations, such as spinal malformation-scoliosis, lordosis, coiled vertebral column-, missing or additional fin rays, bending opercle or jaw malformations, are frequently observed in hatchery-reared larvae. This paper reviews the effects of some nutritional components on skeletal development in larvae of a number of fish species. In the dietary lipid fraction, for instance, it was proven that the phospholipid concentration affected the spinal malformation rate in sea bass fed a compound diet from mouth opening onwards. Phosphatidylinositol, in...
Tipo: Text
Palavras-chave: Retinoic acid; Ascorbic acid; Amino acid; Phospholipid; Peptides; Skeletal development; Quality; Fish larvae.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-443.pdf

Optimization of common cuttlefish (Sepia officinalis) protein hydrolysate using Pepsin by Response Surface Methodology
Provedor de dados: 5
Autores: Kechaou, Emna; Berge, Jean-pascal; Jaouen, Pascal; Ben Amar, Raja.
Protein hydrolysate was prepared from common cuttlefish Sepia officinalis by Pepsin. Hydrolysis conditions (time, temperature, and enzyme activity) were optimized by response surface methodology (RSM) using a factorial design. The regression coefficient was close to 0.999, observed during both experimental and validation runs, and indicated the validity of prediction model. An enzyme activity to substrate ratio (X1), 0.04 AU/g protein; time (X2), 85 minutes; and temperature (X3), 45 °C were found to be the optimum conditions for a higher degree of hydrolysis (21%) and nitrogen recovery (90%) using Pepsin. According to amino acid analysis results and chemical score, methionine and histidine are the limiting amino acids in the hydrolysates, in that order....
Tipo: Text
Palavras-chave: Cuttlefish protein hydrolysate (CPH); Amino acid; Enzyme; Sepia officinalis.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00182/29285/27715.pdf

BONE DEVELOPMENT OF BROILER CHICKENS FED DIETS WITH DIFFERENT AMINO ACID AND CALCIUM LEVELS DURING THE STARTER PHASE
Provedor de dados: 77
Autores: Soares da Silva Araújo,Cristiane; Martinez Baraldi Artoni,Silvana; Francelino Araújo,Lúcio; Jeferson Quirino Lousada,Mário; Mack Junqueira,Otto; Roque Rodriguez,Anita Isabel.
Two experiments were conducted in order to evaluate the effects of different dietary amino acid and calcium profiles on the bone characteristics of two chicken strains (Avian Farms and Cobb) during the starter phase. At the end of each experiment, 2 chickens of each replicate were sacrificed and their tibiae were collected for analysis of following bone characteristics: bone measurements (weight, length and thickness of the compact and spongy layers) and bone density (bone densitometry). A total of 540 birds were used in each experiment, divided into fully randomized blocks with a 3 x 2 factorial schemes, i. e., 3 amino acid profiles (methionine, lysine and threonine &amp;shy; 100%, 125% and 150% of NRC recommendations, 1994) and 2 calcium levels (75% and...
Tipo: Journal article
Palavras-chave: Amino acid; Bone density; Broiler chickens; Calcium.
Ano: 2003
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000200001

Effects of various nutrients and renewal of medium on in vitro development of bovine oocytes matured and fertilized in vitro
Provedor de dados: 19
Autores: FUKUI, Yutaka; LEE, Eun Song; KANEZAWA, Yuka; 福井, 豊; 李, 殷松; 金澤, 由佳.
http://www.obihiro.ac.jp/~library/kenkyu.html
Palavras-chave: Amino acid; Glucose; In vitro development; Oocyte; Cattle.
Ano: 1995
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3790

Lysine and arginine requirements of Salminus brasiliensis
Provedor de dados: 86
Autores: Dairiki,Jony Koji; Borghesi,Ricardo; Dias,Carlos Tadeu dos Santos; Cyrino,José Eurico Possebon.
The objective of this work was to determine the dietary lysine (DL) and dietary arginine (DA) requirements of dourado (Salminus brasiliensis), through dose-response trials using the amino acid profiles of whole carcasses as a reference. Two experiments were carried out in a completely randomized design (n=4). In the first experiment, groups of 12 feed-conditioned dourado juveniles (11.4±0.2 g) were stocked in 60 L cages placed in 300 L plastic indoor tanks in a closed circulation system. Fish were fed for 60 days on diets containing 1.0, 1.5, 2.0, 2.5, 3.0, or 3.5 % dietary lysine. In the second experiment, dourado juveniles (27.0±0.8 g) were fed for 60 days on semipurified diets containing arginine at 1.0, 1.5, 2.0, 2.5 or 3.0%, in similar conditions to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Dose-response; Dourado; Regression.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800032

Chemical composition and fatty acid contents in farmed freshwater prawns
Provedor de dados: 86
Autores: Portella,Carolina de Gasperi; Sant'Ana,Léa Silvia; Valenti,Wagner Cotroni.
The objective of this work was to evaluate the chemical composition and fatty acid contents of Amazonian and giant river prawns. After four-month farming, with the same diet for both species, palmitic and stearic acids were the main saturated fatty acids. Oleic acid was the main monounsatured fatty acid, and the eicosapentaenoic and docosahexaenoic acids were the most abundant polyunsaturated acids. Amazonian prawn has higher levels of protein and polyunsaturated fatty acids than those of the giant river prawn, which shows its potential for aquaculture.
Tipo: Info:eu-repo/semantics/report
Palavras-chave: Macrobrachium amazonicum; Macrobrachium rosenbergii; Amino acid; Fatty acids; Meat quality.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2013000800046

Digestible Lysine Requirements the Performance, Carcass Traits and Breast Meat Quality of Slow-Growing Broilers
Provedor de dados: 89
Autores: Brasil,RJM; Lima,CAR; Machado,NJB; Curvello,FA; Quaresma,DV; Vieites,FM; Sousa,FDR.
ABSTRACT Three experiments were conducted to estimate the digestible lysine requirements of slow-growing broilers on their performance, carcass traits, and breast meat quality. Different broilers were evaluated in each experiment. In Experiment 1, broilers were evaluated from 29-49 days of age (grower phase I), in Experiment 2, from 50 to 69 days old (grower phase II), and in Experiment 3, from 70-84 days old (finisher phase). A completely randomized design with five treatments of four replicates each was applied in all experiments. The following dietary digestible lysine values were investigated: 0.871, 1.011, 1.151, 1.291 and 1.431% in Experiment 1; 0.803, 0.943, 1.083, 1.223 and 1.363% in Experiment 2; and 0.766, 0.906, 1.046, 1.186 and 1.326% in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Meat quality; Lysine requirements; Slow-growing broilers.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000300555

Effects of dietary lysine on broiler performance and carcass yield - meta-analysis
Provedor de dados: 89
Autores: Mendes,AS; Api,I; Silva,L; Silva,RTL; Sausen,L; Menezes,LFG; Morello,GM; Carvalho,EH.
There has been a great evolution and improvement in the nutrition of poultry and lysine has been used the reference amino acid to increase animal protein deposition. Therefore, a meta-analysis was performed with the objective of studying the effect of different dietary lysine levels on the performance and carcass yield of broiler chickens. In total, 21 studies published in Brazil since 1999 were included. Bird performance considered daily weight gain (178 observations) and feed conversion ratio (188 observations) results. Carcass quality was evaluated relative to carcass yield (24 observations), abdominal fat (24 observations) and breast meat yield (30 observations). Data were checked for normality and were submitted to analysis of variance. Weight gain...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Nutrition; Poultry production.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400013

Use of Glutamine in Post-Hatch Feed for Broiler Chicks
Provedor de dados: 89
Autores: Carvalho,FB; Stringhini,JH; Leandro,NSM; Café,M; Sousa,RF; Santos,BM.
ABSTRACT Post-hatch delayed placement damages, physical and physiological development of broiler chicks. The objective of this study was to ascertain adequate levels of glutamine inclusion in post-hatch and pre-starter feed, in order to minimize the negative effects of post-hatch delayed placement on broiler chicks. The birds were distributed in a completely randomized design, with four treatments and five replicates of ten birds each. Four levels of glutamine supplementation (0, 1, 2 and 3%) were used in the pre-starter feed, which was given to the chicks in the transportation box and during the pre-starter phase. After 24 hours of access to this feed, and at 7 days of age, the chicks’ performance, yolk sac retraction, plasma glucose concentration, weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Poultry; Delayed placement; Glucose; Histomorphometry.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2021000100300

DIGESTIBLE VALINE REQUIREMENTS IN LOW-PROTEIN DIETS FOR BROILERS CHICKS
Provedor de dados: 89
Autores: Nascimento,GR; Murakami,AE; Ospina-Rojas,IC; Diaz-Vargas,M; Picoli,KP; Garcia,RG.
ABSTRACT Three experiments were carried out to evaluate the levels of digestible valine in diets with reduced crude protein on the performance, carcass yield and muscle fiber diameter of male broilers during the pre-starter (1 to 8 d of age), starter (9 to 21 d of age) and grower phases (21 to 42 d of age). A total of 1,080 chickens in the pre-starter phase, 900 in the starter phase and 864 in the grower phase were distributed in a completely randomized design with six treatments, consisting of a control positive diet (C+) and diets with 2 percentage points (p.p.) reduction of crude protein level and five graded levels of digestible valine (Val), with six replicates of 30, 25 and 24 birds per experimental unit, respectively. The recommended level of TID...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Branched-chain; Fiber diameter.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300381

Digestible Lysine on Live Performance of Chicken Type Naked Neck During the Starter Phase
Provedor de dados: 89
Autores: Oliveira,RG de; Pinheiro,SRF; Castro,MR de; Vieira,DJ; Pires,AV; Abreu,LRA de.
ABSTRACT The poultry market has changed due to a higher consumer interest on products with differentiated organoleptic characteristics, making of free-range broiler production a promising activity. This experiment was conducted to determine the digestible lysine requirements of Redbro Cou Nu male and female chickens during the starter phase (one to 21 days of age). Six hundred and thirty Redbro Cou Nu broilers were distributed into 30 pens (21 chickens/pen) according to a randomized complete design in a 5 x 2 factorial arrangement, consisting of five levels of digestible lysine and two sexes, with three replicates (pens) per treatments. Diets with increasing digestible lysine levels (8.1, 9.5, 10.9, 12.3 and 13.7 g of digestible lysine per kg of diet) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Feed conversion ratio; Ideal protein; Nutritional requirement.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400483

Performance of broilers fed with different levels of methionine hydroxy analogue and DL-methionine
Provedor de dados: 89
Autores: Meirelles,HT; Albuquerque,R; Borgatti,LMO; Souza,LWO; Meister,NC; Lima,FR.
One-day-old male Ross chicks were used in an experiment designed to compare two methionine sources, DL-methionine and methionine hydroxy analogue free acid (MHA-FA), and four different levels: 0.41; 0.47; 0.53; 0.59% (starter diet); 0.35; 0.41; 0.47; 0.53% (grower diet); and 0.30; 0.36; 0.42; 0.48% (finisher diet). One thousand two hundred and eighty chicks were housed in 32 experimental floor-pens (40 birds each) and fed 8 experimental diets based on corn and soybean meal for 47 days. The effects of methionine sources and levels were evaluated by performance data, carcass and cut yields, feather yield and abdominal fat content. Data were analyzed as a completely randomized design in a 2x4 factorial arrangement (2 sources and 4 levels), with 8 treatments...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Broilers; Carcass yield; Methionine source; Performance.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100009

Requirement of Digestible Methionine + Cystine to Molted Laying Hens
Provedor de dados: 89
Autores: Oliveira Filho,PA; Cruz,FGG; Rufino,JPF; Silva,EM; Viana Filho,GB; Silva,FM.
ABSTRACT The present study aimed to determine the ideal requirement of digestible methionine + cystine to molted laying hens. The experimental period lasted 105 days, divided into five periods of 21 days. 144 Hisex White laying hens with 84 weeks-of-age were used. The experimental design was completely randomized with treatments constituted for six levels of digestible methionine + cystine (0.45, 0.50, 0.55, 0.60, 0.65, and 0.70%) in the diets, with four replicates of six birds each. Data collected were evaluated by polynomial regression at 5%. There was a significant effect (p&lt;0.05) of digestible methionine + cystine on feed intake, energy intake, protein intake, egg production, and egg mass. Internal egg quality presented positive linear effect...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Egg quality; Hen; Performance; Serum.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000400323

Effect of energy levels of diets formulated on total or digestible amino acid basis on broiler performance
Provedor de dados: 89
Autores: Maiorka,A; Dahlke,F; Santin,E; Kessler,AM; Penz Jr.,AM.
This study was conducted to evaluate the performance and carcass and breast yields of broilers fed two different energy levels (3,200 or 2,900 kcal ME/kg) and two ways of expressing amino acid requirements (total - TAA or digestible - DAA) between 21 and 42 days of age. The results showed that broilers fed the diet containing 3,200 kcal ME/kg had higher weight gain (P=0.015), better feed conversion (P=0.001), and higher abdominal fat deposition (P=0.001) as compared to those fed the diet containing 2,900 kcal ME/kg. Diets formulated on DAA basis promoted higher weight gain (P=0.043), better feed conversion (P=0.010) and better conversion of ME intake into weight gain (P=0.007) as compared to those formulated on TAA basis. The results of this study suggest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Broilers; Energy.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2004000200003

GLUTAMIC ACID IMPROVES BODY WEIGHT GAIN AND INTESTINAL MORPHOLOGY OF BROILER CHICKENS SUBMITTED TO HEAT STRESS
Provedor de dados: 89
Autores: Porto,ML; Givisiez,PEN; Saraiva,EP; Costa,FGP; Moreira Filho,ALB; Andrade,MFS; Brandão,PA; Guerra,RR.
ABSTRACTThe objective of this study was to evaluate the effects of 1% dietary glutamic acid on the body weight, intestinal morphometry, and anti-Newcastle antibody titers of broiler chickens submitted to heat stress. One-d-old male broiler chicks (n=120) were distributed according to a 2 x 2 factorial design with two environmental temperatures (thermoneutral or heat stress) and two diets (with 0 or 1% glutamic acid). Heat stress temperature was constantly maintained (24h/day) 5 ºC higher than the thermoneutral temperature. Diets supplied the nutritional requirements of broilers in the pre-starter (1 to 7d) and starter (8 to 21d) phases. Birds were vaccinated against Newcastle disease on d 7 via eye drop. On days 5, 10, 15, and 20, individual body weight...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Duodenum morphology; Environmental temperature; Humoral immunity; Heat stress; Performance.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300355

Effects of crossbreeding on slaughter traits and breast muscle chemical composition in chinese chickens
Provedor de dados: 89
Autores: Huang,Ai-xia; Li,Jin-jun; Shen,Jun-da; Tao,Zheng-rong; Ren,Jin-dong; Li,Guo-qing; Wang,De-qian; Tian,Yong; Yang,Fu-sheng; Ding,Wei-ping; Wu,Tian-xing; Lu,Li-zhi.
We investigated the effects of crossbreeding on slaughter traits and the chemical composition of chicken breast muscle. Trials were conducted using 120 broilers from four lines: Xiao-Shan chicken (XS), Xian-Ju chicken (XJ), Xiao-Shan chicken♂♂ × Xian-Ju chicken♀♀ (Zhenan 1, ZNY1) and Xiao-Shan chicken♂♂ × (Guang-Xi Yellow chicken♂♂×Xian-Ju chicken♀♀) ♀♀ (Zhenan 2, ZNY2). The birds were slaughtered at 120 days of age and the slaughter traits were measured. Breast muscles were sampled to determine chemical composition. The slaughter traits of hybrid chickens were improved. Both hybrid strains had higher intramuscular fat (IMF) and inosine-5'-monophosphate (inosinic acid, IMP). Concentrations of monounsaturated fatty acids (MUFA) in breast muscles from the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Chicken; Crossbreeding; Fatty acid; Inosine-5'-monophosphate; Intramuscular fat; Slaughter traits.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400005

Effects of dietary valine:lysine ratios on lactation performance of primiparous sows nursing large litters
Provedor de dados: 96
Autores: Devi,Subramaniam Mohana; Park,Jae Won; Kim,In Ho.
ABSTRACT Eighteen sows were used to determine the effect of dietary valine:lysine (val:lys) ratios on lactation performance in primiparous sows and litter performance. Sows, raised in individual pens, were randomly assigned to 1 of 2 experimental diets containing different standardized ileal digestibility (SID) val:lys ratios of 0.80 or 0.85. Corn-soybean-wheat-based diets were formulated to achieve the dietary treatments (0.86% or 0.87% SID lysine, and 0.69% or 0.74% SID valine). All diets were formulated to have 3,450 kcal metabolizable energy/kg. The experiment lasted 24 d. At the end of the experiment, body weight loss, backfat loss, average daily feed intake, and days to return to estrus were not affected by the different dietary val:lys ratios....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Body weight; Feed intake; Pigs.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015001200420

Gut microflora and intestinal morphology changes of broiler chickens fed reducing dietary protein supplemented with lysine, methionine, and threonine in tropical environment
Provedor de dados: 96
Autores: Shazali,Nurhazirah; Loh,Teck Chwen; Foo,Hooi Ling; Samsudin,Anjas Asmara.
ABSTRACT This experiment aimed to discover the effect of reducing dietary protein supplemented with lysine, methionine, and threonine on growth performance, volatile fatty acid profile, and intestinal villus height and crypt depth of broilers, as well as the microflora counts isolated from broiler chicken faeces. A total of 288-day-old broilers were allocated to eight treatments with six replicates consisting of 36 birds per treatment. The diets contained dietary protein from 21 to 18% in starter diet and 18 to 16% in finisher diet supplemented with L-lysine, DL-methionine, and L-threonine at the same ratio for all dietary treatments. Body weight and feed intake were determined, and feed conversion ratio was calculated. Blood, intestine, and digesta...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Broiler; Protein supplementation.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100530

Digestible tryptophan:digestible lysine ratio in diets for laying hens from 24 to 40 weeks of age
Provedor de dados: 96
Autores: Calderano,Arele Arlindo; Gomes,Paulo Cezar; Donzele,Juarez Lopes; Barreto,Sergio Luiz de Toledo; Vellasco,Cássia Rampini; Mello,Heloisa Helena de Carvalho; Lelis,Guilherme Rodrigues; Rocha,Tatiana Cristina da.
The objective of this study was to determine the ideal digestible tryptophan:digestible lysine ratio in diets for laying hens from 24 to 40 weeks of age. Two hundred and forty Hy-Line W-36 laying hens at 24 weeks of age were distributed in a completely randomized design, with five treatments, eight replicates and six birds per experimental unit. The digestible tryptophan levels in the experimental diets were 1.57; 1.68; 1.79; 1.90 and 2.01 g/kg, providing ratios of digestible tryptophan:digestible lysine of 0.215; 0.230; 0.245; 0.260 and 0.275. The increase in the levels of digestible tryptophan in the diet linearly improved the feed intake, digestible tryptophan intake, digestible lysine intake, egg production, egg mass, feed conversion per egg mass and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Birds; Ideal protein.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000006

Nutritional plans of digestible lysine for growing-finishing gilts
Provedor de dados: 96
Autores: Rocha,Gabriel Cipriano; Donzele,Juarez Lopes; Silva,Francisco Carlos de Oliveira; Donzele,Rita Flávia Miranda de Oliveira; Kiefer,Charles; Alebrante,Leandro; Paulino,Pedro Veiga Rodrigues; Serão,Nicola Vergara Lopes.
This experiment was conducted to evaluate nutritional plans of digestible lysine (DLys) for growing-finishing gilts. Eighty gilts with 63 days of age and an initial weight of 24.2±1.52 kg were distributed in a completely randomized block design, with five nutritional plans of DLys (9-8-7, 10-9-8, 11-10-9, 12-11-10, and 13-12-11 g/kg, from 63 to 103, 104 to 133, and 134 to 153 days of age, respectively) and eight replicates. Pigs were housed in pairs and fed their respective diets ad libitum throughout the experimental period (90 days). To monitor the animal development along the experiment at 103 and 133 days, gilts were weighed and subjected to analysis of ultrasound for evaluation of loin depth (longissimus dorsi) and backfat thickness. At the end of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Carcass; Performance; Phases; Swine.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000900457

Effect of dietary amino acid composition from proteins alternative to fishmeal on the growth of juveniles of the common snook, Centropomus undecimalis
Provedor de dados: 96
Autores: Silvão,Cristiane Freire; Nunes,Alberto Jorge Pinto.
ABSTRACT This study investigated the effect of dietary amino acid composition from proteins alternative to fishmeal on the growth performance of the common snook, Centropomus undecimalis. Fish of 10.79±0.71 g (n = 150) were stocked in 15 shaded outdoor tanks of 1 m3. The basal diet contained 643.4 g kg−1 salmon byproduct meal (SML) and 200.0 g kg−1 soy protein concentrate (SPC). Two other diets replaced 39 and 29% of the SML with poultry byproduct meal (PBM, 170.1 g kg−1) and SPC (334.9 g kg−1), respectively. Fish were fed twice daily for 84 days under 32±1 g L−1 water salinity and 27.3±0.9 °C temperature. Final survival (99.5±2.6%) was unaffected by dietary treatment. Snook grew slower (0.24±0.03 and 0.27±0.04 vs 0.35±0.06 g day−1) and achieved the lowest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Fishmeal; Fish nutrition; Nutritional requirement.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000700569

Digestible threonine for slow-growing broilers: performance, carcass characteristics, intestinal mucin, and duodenal morphometry
Provedor de dados: 96
Autores: Machado,Noédson de Jesus Beltrão; Lima,Cristina Amorim Ribeiro de; Brasil,Ronner Joaquim Mendonça; Quaresma,Débora Vaccari; Dilelis,Felipe; Silva,Ana Paula Pereira da; Curvello,Fernando Augusto.
ABSTRACT Five experiments were conducted to estimate the digestible threonine requirements of slow-growing broilers: experiment 1, starter phase (days 10 to 28); experiment 2, grower I phase (days 29 to 49); experiment 3, grower II phase (days 50 to 69); experiment 4, finisher phase (days 70 to 84); and experiment 5, which was specifically conducted to determine the production of intestinal mucin over two periods (days 50 to 69 and 70 to 84). Different birds were used in all experiments. A completely randomized design with five treatments and four replicates was used. Treatments consisted of increasing the values of digestible threonine in the diet through basal feed supplementation with L-threonine (98.5%), which was added instead of cornstarch. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Nutritional requirements; Villus.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100514

Digestible lysine and organic zinc for male broiler from 1 to 11 days of age: performance and body composition
Provedor de dados: 96
Autores: Trindade Neto,Messias Alves da; Namazu,Lilian Bernadete; Kobashigawa,Estela; Takeara,Paula; Donato,Daniella Carolina Zanardo; Albuquerque,Ricardo de.
This study evaluated levels of digestible lysine and organic zinc for male Ross strain broilers from 1 to 11 days of age. It was used 1,050 chicks distributed in randomized block design, in 5 × 2 factorial scheme, with seven repetitions of 15 birds per experimental unit. The dietary concentrations of digestible lysine were 0.90; 1.00; 1.10; 1.20; and 1.40% combined with 43 and 253 ppm zinc chelate. The diets contained 2,965 ± 18 kcal/kg of apparent metabolizable energy (AME) and 21.48 ± 0.18% of CP. It was determined chemical composition, protein, lipid, mineral and water depositions on carcass and empty body. There was no interaction among the factors digestible lysine and organic zinc. Effect of zinc concentration increase was observed on greatest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Nutrient deposition; Nutrition; Requirement; Zinc.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000300019

Digestible lysine levels in diets supplemented with ractopamine
Provedor de dados: 96
Autores: Souza,Evelar de Oliveira; Haese,Douglas; Kill,João Luís; Haddade,Ismail Ramalho; Lacerda,Elcio das Graça; Saraiva,Alysson; Silva,Francisco Carlos de Oliveira; Sobreiro,Rodrigo Pereira.
In order evaluate digestible lysine levels in diets supplemented with 20 ppm of ractopamine on the performance and carcass traits, 64 barrows with high genetic potential at finishing phase were allotted in a completely randomized block design with four digestible lysine levels (0.80, 0.90, 1.00, and 1.10%), eight replicates and two pigs per experimental unit. Initial body weight and pigs' kinship were used as criteria in the blocks formation. Diets were mainly composed of corn and soybean meal supplemented with minerals, vitamins and amino acids to meet pigs' nutritional requirements at the finishing phase, except for digestible lysine. No effect of digestible lysine levels was observed in animal performance. The digestible lysine intake increased linearly...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additive; Amino acid; Carcass; Diet; Meat.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001000018

Roughage-free finishing diet based on whole corn grain and a mixture of additives for Nellore heifers
Provedor de dados: 96
Autores: Paula,Raphael Marques de; Zotti,Claiton André; D’Abreu,Léa Furlan; Cônsolo,Nara Regina Brandão; Leme,Paulo Roberto; Silva,Saulo da Luz e; Saran Netto,Arlindo.
ABSTRACT This study was carried out to evaluate the effect of a blend of additives (choline, methionine, selenium, and organic zinc) on performance, feed efficiency, rumen parameters, and carcass traits of Nellore heifers finished with roughage-free diet. Nellore heifers (n = 36; average BW = 244±24.1 kg; average 24 months of age) were maintained in a feedlot system for 86 d. Heifers were separated into two groups: control and additive. Heifers in control group were fed a based diet composed of 850 g kg−1 corn grain and 150 g kg−1 of a mineral-vitamin-protein pellet. The additive group was fed a diet supplemented with a blend of choline, methionine, selenium, and organic zinc at 1,667, 4,000, 1, and 24.37 mg kg−1 of the diet dry matter, respectively. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Feedlot; Metabolic modulator; Minerals.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100700

Digestibility of animal and vegetable protein ingredients by pirarucu juveniles,  Arapaima gigas
Provedor de dados: 96
Autores: Cipriano,Filipe dos Santos; Lima,Kauana Santos de; Souza,Ricardo Henrique Bastos de; Tonini,William Cristiane Teles; Passinato,Érica Bevitório; Braga,Luís Gustavo Tavares.
ABSTRACT The objective of this study was to determine the apparent digestibility coefficients of energy, protein, and amino acids in protein ingredients by pirarucu juveniles. A test was conducted with six protein ingredients: meat and bone meal, fish meal, hydrolyzed feather meal, poultry by-product meal, soybean meal, and corn gluten meal. Three repetitions were used for each tested ingredient. A reference feed was used with 430 g kg−1 crude protein and 19.63 kJ g−1 gross energy. The test feeds consisted of the replacement of 30% of the reference feeds with the test ingredients. Chromium oxide was added to the feeds at 1 g kg−1 as an external marker. Eighteen juveniles with an average weight of 235±36 g were used. The best apparent digestibility...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Carnivore species; Fish nutrition; Nutritional value.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016001000581

Promotion of cashmere growth by sulfur supplements in cashmere goats
Provedor de dados: 96
Autores: Feng,Yali; Sun,Yu; Deng,Hongwei; Cong,Yuyan.
This study was conducted to investigate effects of inorganic and organic sulfur supplements on cashmere growth and their differences. Thirty-six six-month-old female Liaoning cashmere goats with a body weight of approximately 25 kg and good health were randomly assigned to three treatments: control, ZnSO4 and HMBi (2-hydroxy-4-(methylthio) butyric acid isopropyl ester). The three groups were fed a basal diet, a ZnSO4 diet (supplemented with 0.63% ZnSO4.H2O) and an HMBi diet (supplemented with 1.27% HMBi), respectively. Blood and cashmere samples were collected at the end of the three-month experimental period. The plasma concentrations of total protein, urea nitrogen, ammonia and amino acids; the cashmere content of amino acids and sulfur contents; the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 2-hydroxy-4-(methylthio) butyric acid isopropyl ester; Amino acid; Cashmere growth rate; Sulfur; ZnSO4.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013001100005

Effects of in ovo injection of lysine and methionine into fertile broiler (parent stock) eggs on hatchability, growth performance, caecum microbiota, and ileum histomorphology
Provedor de dados: 96
Autores: Coskun,Isa; Akkan,Aysenur; Erener,Guray.
ABSTRACT We investigated the effect of in ovo injection of lysine, methionine, or their mixture into fertile broiler eggs on hatchability, chick weight, growth performance, inner organ development, caecum total aerobic bacteria, E. coli, coliforms, Enterobactericaea, and ileal histomorphology of broilers. Three hundred fertile eggs obtained from 60-week-old Ross 308 broiler breeders were used. Before this study, a preliminary study was conducted to determine the optimal amino acid dose. Optimum amino acid dose was determined as 2 mg/0.2 mL. Before replacing hatching machine, eggs were weighed individually and numbered. On day 16 of incubation, these eggs were allocated to treatment groups: negative control (no injection), positive control (distilled water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Broiler chick; In ovo feeding; Poultry; Ross 308.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100516

Ractopamine and lysine levels on performance and carcass characteristics of finishing pigs
Provedor de dados: 96
Autores: Almeida,Erin Caperuto de; Fialho,Elias Tadeu; Rodrigues,Paulo Borges; Zangeronimo,Márcio Gilberto; Lima,José Augusto de Freitas; Fontes,Dalton de Oliveira.
It was evaluated the effect of diets supplemented or not supplemented with ractopamine and digestible lysine on the performance and carcass characteristics of finishing pigs. A total of 50 barrows and 50 gilts (90.2 kg ± 3.5 kg) were used. In the growth performance trial, a randomized block design was utilized in a 5 x 2 factorial arrangement, consisting of five levels of digestible lysine (0.68; 0.78; 0.88; 0.98 and 1.08%) and two levels of ractopamine (0 and 5 ppm), totaling ten diets and five replications. In a study of carcass characteristics, the same design and levels of lysine and ractopamine were used, but another factor (sex of animals- female and male) was included, totaling 20 treatments, each one with five replicates. Except for lysine daily...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Additives; Amino acid; Carcass modifier; Nutrition.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000900014

Arginine improves nutritional quality of sow milk and piglet performance
Provedor de dados: 96
Autores: Moreira,Rennan Herculano Rufino; Lanferdini,Eloiza; Fonseca,Leonardo da Silva; Chaves,Rhuan Filipe; Garbossa,Cesar Augusto Pospissil; Saraiva,Alysson; Nogueira,Eduardo Terra; Abreu,Márvio Lobão Teixeira de.
ABSTRACT The objective of this study was to evaluate the effect of L-arginine supplementation in lactation diets on the productive and reproductive performance of pluriparous sows and their litters. Seventy-six sows of the same genetic line were assigned to four treatments in a completely randomized design with 19 replicates. The experimental unit was the sow and its respective litter. Treatments comprised a control diet (no L-arginine supplementation) and other three diets obtained by top dressing the control diet with 0.5, 1.0, and 1.5% of L-arginine. L-arginine supplementation had no effect on any performance variables, body condition, milk production, or weaning-estrus interval. There was a quadratic effect on percentage of protein and fat in milk as...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Lactation; Milk composition; Reproduction; Swine.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100530

Reevaluation of the digestible lysine requirement for broilers based on genetic potential
Provedor de dados: 63
Autores: Dorigam,Juliano Cesar De Paula; Sakomura,Nilva Kazue; Hauschild,Luciano; Silva,Edney Pereira da; Bendezu,Hilda Cristina Palma; Fernandes,João Batista Kochenborger.
Broiler strains available in the poultry industry present different requirements for dietary lysine due to their different growth potentials as a result of their genetic makeup. This study aimed to determine the model parameters for maximum nitrogen retention (NRmaxT), the nitrogen maintenance requirement (NMR) and the efficiency of lysine utilization (bc-1) to reevaluate the lysine (Lys) requirements of male and female broilers. Nitrogen balance trials were performed during three periods (I: 6-21 days, II: 22-37 days, and III: 38-53 days). Seven treatments were used for males and females; the treatments consisted of seven diets with protein levels ranging from 61 to 364 g kg-1 dry matter, with Lys being limiting in the dietary nitrogen (4.91 g of Lys in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Exponential model; Maintenance; Nitrogen retention; Performance.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000300004

15N-labed glycine synthesis
Provedor de dados: 42
Autores: Tavares,Claudinéia R.O.; Bendassolli,José A.; Coelho,Fernando; Sant'ana Filho,Carlos R.; Prestes,Clelber V.
This work describes a method for 15N-isotope-labeled glycine synthesis, as well as details about a recovery line for nitrogen residues. To that effect, amination of alpha-haloacids was performed, using carboxylic chloroacetic acid and labeled aqueous ammonia (15NH3). Special care was taken to avoid possible 15NH3 losses, since its production cost is high. In that respect, although the purchase cost of the 13N-labeled compound (radioactive) is lower, the stable tracer produced constitutes an important tool for N cycling studies in living organisms, also minimizing labor and environmental hazards, as well as time limitation problems in field studies. The tests were carried out with three replications, and variable 15NH3(aq) volumes in the reaction were used...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Stable isotope; Glycine; Amino acid.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652006000300005

A leucine-supplemented diet improved protein content of skeletal muscle in young tumor-bearing rats
Provedor de dados: 56
Autores: Gomes-Marcondes,M.C.C.; Ventrucci,G.; Toledo,M.T.; Cury,L.; Cooper,J.C.
Cancer cachexia induces host protein wastage but the mechanisms are poorly understood. Branched-chain amino acids play a regulatory role in the modulation of both protein synthesis and degradation in host tissues. Leucine, an important amino acid in skeletal muscle, is higher oxidized in tumor-bearing animals. A leucine-supplemented diet was used to analyze the effects of Walker 256 tumor growth on body composition in young weanling Wistar rats divided into two main dietary groups: normal diet (N, 18% protein) and leucine-rich diet (L, 15% protein plus 3% leucine), which were further subdivided into control (N or L) or tumor-bearing (W or LW) subgroups. After 12 days, the animals were sacrificed and their carcass analyzed. The tumor-bearing groups showed a...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Leucine; Amino acid; Walker 256 carcinosarcoma; Body composition; Skeletal muscle protein.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2003001100017

N-terminal amino acids of bovine alpha interferons are relevant for the neutralization of their antiviral activity
Provedor de dados: 56
Autores: Barreto Filho,J.B.; Eiras,P.R.S.; Golgher,R.R.
The structure-function relationship of interferons (IFNs) has been studied by epitope mapping. Epitopes of bovine IFNs, however, are practically unknown, despite their importance in virus infections and in the maternal recognition of pregnancy. It has been shown that recombinant bovine (rBo)IFN-alphaC and rBoIFN-alpha1 differ only in 12 amino acids and that the F12 monoclonal antibody (mAb) binds to a linear sequence of residues 10 to 34. We show here that the antiviral activities of these two IFNs were neutralized by the F12 mAb to different extents using two tests. In residual activity tests the antiviral activity dropped by more than 99% with rBoIFN-alphaC and by 84% with rBoIFN-alpha1. In checkerboard antibody titrations, the F12 mAb titer was 12,000...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Bovine alpha interferon; Neutralization; Amino acid; Epitope.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2001000500015

The role of γ -aminobutyric acid (Gaba) in somatic embryogenesis of Acca sellowiana Berg. (Myrtaceae)
Provedor de dados: 61
Autores: Booz,Maristela Raitz; Kerbauy,Gilberto B.; Guerra,Miguel Pedro; Pescador,Rosete.
The γ-aminobutyric acid (Gaba) is a non-protein amino acid found in prokaryotes and eukaryotes. Its role in plant development has not been fully established. This study reports a quantification of the levels of endogenous Gaba, as well as investigation of its role in different stages of somatic embryogenesis in Acca sellowiana Berg. (Myrtaceae). Zygotic embryos were used as explants and they were inoculated into the culture medium contained different concentrations of Gaba (0,2, 4, 6, 8 and 10 µM). The highest concentrations of endogenous Gaba were detected between the third and nine days after inoculation, reaching the value of 12.77 µmol.g-1FW. High frequency of somatic embryogenesis was observed in response to 10 µM Gaba. This treatment also resulted in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Pineapple guava; Plant growth.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202009000400003

Sequences of digestible lysine for gilts from 60 to 148 days of age
Provedor de dados: 65
Autores: Silva Júnior,Veredino Louzada da; Donzele,Juarez Lopes; Oliveira,Rita Flávia Miranda de; Saraiva,Alysson; Silva,Francisco Carlos de Oliveira; Kill,João Luís.
The experiment was conducted to evaluate five nutritional plans based on sequences of standardized ileal digestible lysine: 0.90-0.80-0.70, 1.00-0.90-0.80, 1.10-1.00-0.90, 1.20-1.10-1.00, and 1.30-1.20-1.10% fed to gilts from 60 to 99, 129 to 100, and 130 to 148 days of age, respectively. Eighty commercial hybrid gilts, selected for lean gain, with initial weight of 23.46±0.27kg were allotted in a randomized block design, with five treatments, eight replicates, and two pigs per experimental unit. No effect (P&gt;0.05) of the nutritional plans was verified on daily feed intake, daily weight gain and feed conversion. The nutritional plans had no influence (P&gt;0.05) on any of the carcass traits evaluated (carcass yield, meat amount, and meat yield). The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amino acid; Carcass; Performance; Pigs; Requirement.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000100118