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Registros recuperados: 14
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Addition of Amylase from Aspergillus Awamori to the Diet of Broiler Chickens Rev. Bras. Ciênc. Avic.
Morgado,HS; Cysneiros,CSS; Sousa,CM; Stringhini,JH; Ulhoa,CJ; Silva,AS; Fabino Neto,R; Freitas,PVDX; Oliveira,HP; Batista,LHC.
ABSTRACT Two experiments were performed to evaluate the hematological and blood biochemistry parameters, biometry of digestive organs, enzyme activities, protein content and absolute weight of the pancreas of broilers fed pre-starter and pre-starter diets supplemented or not with amylase from Aspergillus awamori. In total, 120 male Cobb chicks were housed in heated cages in each experiment. A completely randomized experimental design, with two treatments (feed with and without amylase) and six replicates per treatment of 10 birds each was applied. The data were subjected to analysis of variance using the F-test at 5% probability level. The dietary amylase addition did not affect hematological and blood biochemistry parameters and the biometry of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Blood; Chickens; Fungi; Nutrition.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400725
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Detection of Salmonella spp. by Conventional Bacteriology and by Quantitative Polymerase-Chain Reaction in Commercial Egg Structures Rev. Bras. Ciênc. Avic.
Moraes,DMC; Duarte,SC; Bastos,TSA; Rezende,CLG; Leandro,NSM; Café,MB; Stringhini,JH; Andrade,MA.
Abstract Conventional bacteriology techniques and quantitative polymerase-chain reaction (qPCR) were applied to the eggshell, albumen, and yolk of washed and unwashed commercial white and brown eggs, to detect Salmonella spp. Pooled samples of eggshells, albumen, and yolk of white and brown eggs were collected at the poultry house and at the egg-storage room. Salmonella spp. was detected by conventional bacteriology in 5.4% (21/387) of analyzed samples and in 16% (68/387) by qPCR. In the 114 unwashed white eggs samples of eggshell, albumen and yolk, the bacterium was identified in 2.6% of the eggs (3/114) by conventional bacteriology and in 13.2% (15/114) by qPCR. In the 90 samples of washed eggs, 6.7% (6/90) were contaminated as detected by conventional...
Tipo: Info:eu-repo/semantics/article Palavras-chave: QPCR; Eggshells; Albumen; Yolk.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000100117
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Dietary Supplementation of Barbatimão (Stryphnodendron Adstringens) and Pacari (Lafoensia Pacari) Extracts on the Oxidative Stability and Quality of Chicken Meat Rev. Bras. Ciênc. Avic.
Lima,CB; Migotto,DL; Oliveira,GR; Souza,TC; Santana,RO; Castejon,FV; Tanure,CBGS; Santana,AP; Stringhini,JH; Racanicci,AMC.
ABSTRACT In order to evaluate the antioxidant effects of barbatimão (BAR) or pacari (PAC) on chicken meat oxidative stability and quality, seven dietary treatments containing in three different BAR and PAC concentrations (200, 400 and 600ppm) plus a negative control (CONT) were fed to 350 broilers from 1 to 41 days of age. Ten birds per treatment were slaughtered to collect breast and thigh meat to evaluate pH, color (L*, a*, b*), cooking weight loss (CWL), and shear force (SF) 24 hours postmortem, and TBARS levels in precooked meatballs stored chilled for 8days. The dietary supplementation with BAR and PAC extracts did not affect pH and color, but reduced (p<0.05) SF in breast meat compared with CONT suggesting improved tenderness. PAC200 increased...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidant activity; Brazilian plants; Broiler meat; Quality attributes; TBARS.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400669
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Digestible Threonine Levels in the Starter Diet of Broilers Derived from Breeders of Different Ages Rev. Bras. Ciênc. Avic.
Tanure,CBGS; Santos,JS; Oliveira,EM; Laboissiere,M; Racanicci,AMC; Mc Manus,CM; Café,MB; Stringhini,JH.
ABSTRACT The aim of this study was to evaluate the effect of digestible threonine supplementation in the starter diet on the performance, intestinal parameters, and nutrient metabolism of broilers derived from breeders of different ages. In total, 480 one-day-old Cobb chicks, derived from 38-or 49-week-oldbreeders, were housed in experimental battery cages until 21 days of age and fed four different threonine levels (800, 900, 1,000, or 1,100 mg/kg) in the starter feed. A completely randomized experimental design in a 2x4 factorial arrangement (breeder age x threonine levels) was applied, totaling eight treatments with five replicates of 12 birds each. Broilers from older breeders fed 800 mg digestible threonine/kg of diet presented higher weight gain,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Development; Metabolism; Nutrition; Poultry..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000031
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Effect of different electrolyte balances in broiler diets Rev. Bras. Ciênc. Avic.
Arantes,UM; Stringhini,JH; Oliveira,MC; Martins,PC; Rezende,PM; Andrade,MA; Leandro,NSM; Café,MB.
The aim of this study was to evaluate the performance, tibial density and mineral content, Na, K ,and Cl serum levels, and dry matter content of the litter of broilers fed diets with different levels of dietary electrolyte balances. Two experiments were carried out: during the starter phase (7 to 21 days of age, 960 broilers) and during the growe phase (22 to 38 days of age, 816 broilers). In both experiments, a completely randomized design with four treatments based on dietary electrolyte balance values (200, 240, 280 and 320 mEq/kg of diet) with four replicates was applied. Birds and diets were weighed when birds were seven, 14 and 21 days of age in the first experiment, and 22 and 38 days of age in the second experiment in order to determine weight...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone density; Performance; Potassium; Poultry litter; Sodium.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300010
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Egg quality of hens fed different digestible lysine and arginine levels Rev. Bras. Ciênc. Avic.
Carvalho,FB de; Stringhini,JH; Matos,MS; Café,MB; Leandro,NSM; Gomes,NA; Santana,ES; Jardim Filho,RM.
This experiment aimed at evaluating the influence of the supplementation of digestible lysine and digestible arginine at different ratios in the diet fed to layers between 24 to 44 weeks of age on egg quality. In total,320 Lohmann LSL laying hens were allotted according to a completely randomized design in a 2 x 4factorial arrangement, consisting of two digestible lysine levels (700 or 900 mg/kg of diet) and four digestible arginine levels (700, 800, 900,or 1000 mg/kg of diet). Diets contained, therefore, digestible Lys:Arg ratios of 100, 114, 128, and 142 when the diet contained 700 mg digestible lysine per kg of diet, and 78, 89, 100, and 111 when 900 mg digestible lysine per kg was supplemented. The data obtained with digestible arginine levels were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antagonism; Digestible amino acid; Egg components; Haugh units.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000100063
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Energy and lysine for broilers from 44 to 55 days of age Rev. Bras. Ciênc. Avic.
Araújo,LF; Junqueira,OM; Araújo,CSS; Barbosa,LCGS; Ortolan,JH; Faria,DE; Stringhini,JH.
An experiment was conducted to evaluate the performance and carcass yield of broilers at 55 days of age fed diets with different levels of metabolizable energy and lysine. Evaluated data of performance were weight gain, feed intake, energy intake, lysine intake, caloric conversion and feed conversion. Carcass assessment was performed based on data from carcass yield, breast weight, whole wings, whole legs, back, head + neck, feet and abdominal fat. A 3 x 3 factorial arrangement was used, with 3 levels of metabolizable energy (3,200; 3,400 and 3,600 kcal ME/kg) and 3 lysine levels (0.95%; 1.05% and 1.15%). There was no interaction between the two factors. Nevertheless, increasing levels of metabolizable energy improved weight gain (745 g; 841 g and 910 g,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broilers; Lysine; Metabolizable energy; Performance.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000400007
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In ovo supplementation of 25(OH)D3 to broiler embryos Rev. Bras. Ciênc. Avic.
Gonzales,E; Cruz,CP; Leandro,NSM; Stringhini,JH; Brito,AB.
A dose of 0.3 mL of water solution containing 0.00 (control), 0.625, 1.250 or 1.875 µg of 25-hydroxy cholecalciferol (25(OH)D3) was administered to 312 fertile eggs derived from 49-w-old Cobb 500 broiler breeders on the 17th day of incubation (DE17) via allantoic cavity. After treatment, eggs were distributed and maintained until hatching in four incubators set at 37.8 ºC and 55% RH. Each incubator received eggs from all treatments, according to a block design with four treatments of 77-79 replicates each. Hatching was checked every two hours from 484h to 512h of incubation to evaluate productivity and chick qualities. Chicks were housed until 10 days of age in heated battery cages according to a block design with four treatments of 10 replicates of six...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler; Cholecalciferol; Embryo; In-ovo supplementation; Vitamin D.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300005
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PERFORMANCE AND NUTRIENT METABOLIZABILITY IN BROILERS FED DIETS CONTAINING CORN CONTAMINATED WITH FUMONISIN B1 AND ESTERIFIED GLUCOMANNAN Rev. Bras. Ciênc. Avic.
Oliveira,EM; Tanure,CBGS; Castejon,FV; Castro,RMAD; Rocha,FRT; Carvalho,FB; Andrade,MA; Stringhini,JH.
ABSTRACTAn experiment was conducted to evaluate the performance and nutrient metabolizability of broilers fed diets containing fumonisin B1 (FB1) and an esterified glucomannan (EGM). In total, 420 male broilers were distributed according to a 3 x 2 + 1 factorial arrangement, corresponding to three FB1 exposure times (seven, 21, or 35 days), two dietary glucomannan addition levels (0 or 0.1% EGM), and control diet, totaling seven treatments. The following diets were fed: 1) Control diet, 2) pre-starter diet containing FB1, 3) pre-starter diet containing FB1 and 0.1% EGM, 4) starter diet containing FB1, 5) starter diet containing FB1 and 0.1% EGM, 6) grower diet containing FB1, and 7) grower diet containing FB1 and 0.1% EGM. On d 7, broilers fed FB1...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adsorbent; Fungi; Grains; Metabolism; Nutrition; Poultry..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300313
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Productive consequences of fasting neonatal chicks of different genetic constitutions for growing Rev. Bras. Ciênc. Avic.
Gonzales,E; Stringhini,JH; Dahlke,F; Cunha,WCP; Xavier,SAG.
The study was designed to evaluate the productive consequences of fasting neonatal chicks obtained from strains genetically divergent for growing. Four hundred eight chicks from three strains, 160 from breeders selected for high growth rate and excellent feed conversion ratio (Cobb 500), 160 from breeders not selected for fast growth (JA57), and 160 from a white egg layer strain (Hy-Line W98) were allotted in a 3 (strain) x 2 (fasting period - 8 and 36h after hatching) factorial arrangement with 5 replicates of 16 chicks each. Immediately after hatching, all chicks had similar (P>0.05) relative yolk sac weights (14.13%, 14.50%, and 15.49% for Hy-Line, Cobb, and JA57, respectively). The yolk sac retractions were proportionally higher for Cobb and JA57...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chicks; Fasting; Neonatal; Performance; Yolk sac.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400010
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Quality assessment of corn batches received at a feed mill in the brazilian cerrado Rev. Bras. Ciênc. Avic.
Rodrigues,SIFC; Stringhini,JH; Ribeiro,AML; Pontalti,GC; McManus,CM.
This study aimed at investigating factors that contribute to changes in the quality of corn used in compound poultry feeds. Samples were collected from 6488 bulk cargos received at a feed mill located close to Brasília, Brazil. The parameters studied were divided into two groups: those related to corn chemical composition, including crude protein (% CP), ether extract (% EE), crude fiber (% CF), nitrogen-free extract (% NFE), and estimated metabolizable energy (ME), and corn physical characteristics, including density, moisture, and grain physical damage. High coefficients of determination (R²) and low coefficients of variation (CV) were determined for the chemical and physical parameters. The analysis of variance showed low to medium R². Month, year,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chemical composition; Grain damage; Corn density; Nutritional value; Physical traits.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300002
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Use of Soy Protein Concentrate in Pre-Starter and Starter Diets for Broilers Rev. Bras. Ciênc. Avic.
Vasconcelos,LG; Mello,HHC; Stringhini,JH; Andrade,MA; Cysneiros,CSS; Arnhold,E; Mascarenhas,AG; Resende,MQ; Xavier,HPF.
ABSTRACT Two experiments were carried out to evaluate the effect of using soy protein concentrate (SPC) in pre-starter and starter diets for broilers. In the first experiment, 600 male Cobb broilers, between one and 40 days of age, were distributed in a completely randomized design, with four treatments and six replications of 25 birds each. Treatments were ofered to broilers in the pre-starter and starter diets and consisted of inclusion of soy protein concentrate (0,3,6 and 9%) in diets. The parameters evaluated were: body weight gain, feed conversion ratio, consumption of ration, enzyme production in the pancreas, villus: crypt ratio, leukocyte count and immunoglobulin A (IgA) dosage. Aimed to determine the coefficient of nutrient metabolization of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alternative Feed; Immune Response; Metabolizability; Performance; Poultry.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000500001
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Utilization of Different Corn Fractions by Broilers Rev. Bras. Ciênc. Avic.
Costa,SIFR; Stringhini,JH; Ribeiro,AML; Pontalti,G; MacManus,C.
ABSTRACTThis study was conducted to evaluate the nutritional values of fractions of damaged corn. One hundred and eighty 22-d-old Cobb 500 male broilers were distributed in batteries according to a completely randomized design with six treatments of six replicates each. The treatments consisted of diets containing five corn fractions, classified as sound, fermented, insect-damaged, mold-damaged, or reference corn. The test diets consisted of 60% of reference diet + 40% of each corn fraction. Only the reference corn fraction included all the fractions at different proportions (0.8% fermented, 0.05% insect-damaged, 3.3% mold-damaged, and 95.85% sound grains). The method of total excreta collection was used to determine AMEn values and metabolizability...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Corn quality; Corn density; Metabolizable energy; Broilers..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300307
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Values of Metabolizable Energy and Metabolization of Nutrients for Slow- and Fast-growing Birds at Different Ages Rev. Bras. Ciênc. Avic.
Santos,FR; Stringhini,JH; Oliveira,PR; Duarte,EF; Minafra,CS; Café,MB.
ABSTRACT Two trials were performed to determine apparent metabolizable energy (AME) and AME corrected for zero nitrogen balance (AMEn) values and coefficients of apparent metabolizability of nitrogen (CAMN) and of ether extract (CAMEE) of slow- and fast-growing broilers (Isa label and Cobb, respectively) fed four different diets between 10 to 17 days or 28 to 35 days of age. The method of total excreta collection was applied. The tested feedstuffs were corn, whole corn germ (WCG), sorghum, and soybean meal (SBM). A randomized block experimental design was applied, with two treatments (breeds) and four replicates of ten animals each in the first trial, and four replicates of six animals each in the second trial. No differences in CAMN values were observed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cobb; Total excreta collection; Feed chemical composition; Isa Label.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000400517
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