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| Registros recuperados: 1.268 | |
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| Rocha Jr.,JM; Mahecha,GAB; Dornas,RAP; Kuana,SL; Martins,NRS. |
| A study on the occurrence of epididymal lithiasis (EL) in Gallus gallus domesticus of different breeds and from different geographical regions of Brazil was carried out. Forty breeding roosters were collected in the states Santa Catarina, São Paulo, Minas Gerais, Espírito Santo and Goiás, representing two specific pathogen free Leghorn lines (SPF), one commercial Leghorn layer breeder (Hy-Line) line, two commercial broiler breeder lines (Ross and Cobb), and two backyard chicken flocks. In commercial poultry breeders, EL was observed mainly after 55 weeks of age, and lithus resulted in lower fertility caused by inadequate maturation of spermatozoa and testicular atrophy, which evolved to more severe testicular dysfunction at 100 weeks of age. One hundred... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Epididymal lithiasis; Gallus gallus domesticus; Infertility; Rooster; Testicular calculus. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000100004 |
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| Salmanzadeh,M. |
| This experiment was conducted to determine the effects of an in-ovo injection of glucose on hatchability, weight and subsequent performances of newly-hatched chickens. The 720 fertile eggs used in this experiment were obtained from a Cobb-500 broiler breeder flock of 28 weeks of age. Treatments were the following: 1) control group (withou- injection), 2) group injected with 0.5 ml deionized water (sham group), 3) group injected with 0.5 ml glucose 15% in deionized water, 4) group injected with 0.5 ml glucose 20% in deionized water and 5) group injected with 0.5 ml glucose 25% in deionized water. There werh four replicates per treatment and 36 eggs per replicate. The experimental design was a completely randomized design. Upon hatch, hatchability and weight... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broiler; In-ovo injection; Glucose; Hatching traits; Performance. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000200008 |
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| Sans,ECO; Federici,JF; Dahlke,F; Molento,CFM. |
| Scientific information on the welfare of broilers reared in alternative systems is scarce. The objective of this study was to assess the welfare of free-range broilers using the Welfare Quality® protocol. Free-range broilers reared in ten farms were observed, and measures were made in broilers of five of these farms. The collected data were transformed into scores (0-100), with higher scores indicating better welfare, except for emotional states. Prevalence percentages were calculated for the remaining data. Median (min-max) scores were 81 (63-98) for lameness, 93 (83-99) for hock burn on the farm, 100 (95-100) for plumage cleanliness, 35 (8-70) for podermatitis on the farm, 56 (26-88) for density, 53 (20-53) for dust, 34 (14-67) for litter quality, 93... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feelings; Free range; Protocol; Scores. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000300011 |
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| Tuesta,GMR; Viana,GS; Barreto,SLT; Muniz,JCL; Reis,RS; Mencalha,R; Hannas,MI. |
| ABSTRACT This study was conducted to determine the optimal standardized ileal digestible arginine to lysine (SID Arg:Lys) ratio for Japanese quails in the egg-laying phase. A total of two hundred forty-five 35-week-old Japanese quails (181 ± 1.30 g initial body weight) were randomly assigned to five treatment groups with seven replicates of seven quails. Graded levels of L-Arginine were added to a basal diet in order to produce five SID Arg:Lys ratios (101, 106, 111, 116 and 121%). Collected data were analyzed as one-way ANOVA and optimal ratio was estimated using polynomial regression model (linear and quadratic) based on performance traits. Statistical differences were considered for p<0.05. Graded SID Arg:Lys ratios did not affect performance traits... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coturnix coturnix japonica; Digestible amino acids; Ideal protein. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200351 |
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| Routman,KS; Yoshida,L; Frizzas de Lima,AC; Macari,M; Pizauro Jr.,JM. |
| Thirty-two Hubbard broilers were raised under commercial husbandry to evaluate the effect of temperature exposure (26 and 35ºC) on the activity of digestive enzymes at different ages (23 and 46 days) and different diet energy levels (2,900 and 3,200 kcal ME/kg). Data were analyzed in a 2x2x2 factorial arrangement (energy/temperature/age) in a completely randomized design. Animals were slaughtered after four hours of heat exposure for sampling of an intestinal segment, to extract alkaline phosphatase, and pancreas, to extract amylase, lipase and trypsin. The activity of intestinal alkaline phosphatase was influenced by energy level and animal age. Energy level of diet and environmental temperature interfered on the activity of pancreatic amylase. Lipase... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Digestive enzymes; Thermal stress. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100003 |
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| Baylan,M; Akpınar,GC; Canogullari,SD; Ayasan,T. |
| ABSTRACT This experiment was carried out to determine the effects of using garlic extract (Allium sativum) as an alternative to formaldehyde for the disinfection of hatching eggs on hatching traits and growth performance of quails. Four treatments, with 240 hatching eggs each, were evaluated: egg immersion in two different levels (2.5% and 5.0%) of garlic extract (garlic-1, garlic-2), formaldehyde fumigation (positive control), and eggs not submitted to disinfection (negative control). Mid-term and late embryomortality, pipped egg, and culled chick rates were not influenced by the (p>0.05). The highest (p<0.05) early embryo mortality rate was detected in the formaldehyde treatment (9.99%), and the lowest in garlic-2 treatment (2.68%). Hatchability of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Quail; Hatching eggs; Disinfection; Garlic extract. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200343 |
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| Cedro,TMM; Calixto,LFL; Gaspar,A; Curvello,FA; Hora,AS. |
| The internal quality of conventional and ω-3 enriched commercial eggs stored at different temperatures was evaluated. Eggs derived from Isa Brown layers fed two different diets. In Group 1, 432 hens were fed throughout their productive life with a diet based on corn and soybean meal (production of conventional eggs). In Group 2, starting at 22 weeks of age, other 432 hens were fed a diet containing 1.5% of marine algae substrate and 1.8% of fish oil (production of ω-3 enriched eggs). The following parameters were evaluated: Haugh unit, yolk index, albumen pH, and yolk pH. There were no significant differences between conventional and enriched with ω-3 eggs as to internal quality parameters. Only the interaction between storage time and temperature was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Commercial eggs; Hens; Omega-3; Storage; Temperature. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000300007 |
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| Garcia,RG; Almeida Paz,ICL; Caldara,FR; Nääs,IA; Bueno,LGF; Freitas,LW; Graciano,JD; Sim,S. |
| The aim of this study was to evaluate the effects of different litter materials on litter compaction, broiler feathering and the incidence of carcass lesions. In the experiment, 3240 one-day-old Ross® chicks were selected by sex and distributed according to a completely randomized experimental design in a 2 x 6 factorial arrangement (two sex and six litter materials). The following litter materials were used: wood shavings, rice husks, chopped Napier grass, 50% sugar cane bagasse plus 50% wood shavings, 50% sugar cane bagasse plus 50% rice husks, and pure sugar cane bagasse. Litter compaction was weekly assessed using a penetrometer. On days 21, 35 and 42 of the experimental period, feathering on the back and legs was scored according to a 0 - 10 scale. On... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Compaction; Fathering; Quality; Substrate. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100005 |
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| Ahmad,S; Khalique,A; Pasha,TN; Mehmood,S; Ahmad,S Sohail; Khan,AM; Hussain,K. |
| ABSTRACT Phytogenic feed additives have been increasingly used in the last decade, and several plants and their metabolites have been investigated for the said purpose. In this context, present study aimed at evaluating the effects of Moringa oleifera as feed additive on layer performance, and egg bioactive compound levels and nutrient profile. HyLine W36 layers (n=200), 50 weeks of age, were randomly distributed in four treatments with five replicates of ten birds each. Four isocaloric (2725 kcal/kg) and isonitrogenous (CP 16%) diets were formulated and supplemented with 0, 0.5, 1.0, or 1.5% (w/w) of dried Moringa oleifera leaf powder (MLM). The results showed positive effects of MLM on egg production, egg mass, and feed conversion ratio, but negative... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Β-carotene; Moringa leaf; Quercetin; Production performance; Serum biochemistry. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000200325 |
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| Pelícia,VC; Stradiotti,AC; Araujo,PC de; Maruno,MK; Carvalho,FB de; Pezzato,AC; Sartori,JR. |
| The objective of this study was to evaluate the effect of the dietary supplementation of phytogenic additives (PAs) and glutamine plus glutamic acid (Gln/Glu), associated or not, in replacement of antibiotic growth promoters and anticoccidials (AGP/AC) on the performance and carcass yield of broilers. Five hundred male Cobb broilers were housed in an experimental house and randomly distributed into five treatments, with four replicates of 25 birds each. Treatments consisted of a control diet (CD); CD+AGP/AC; CD+Gln/Glu; CD+PAs; CD+Gln/ Glu+PAs. Diets were formulated only with plant feedstuffs, i.e., they did not contain any animal byproducts. Performance data were collected for the accumulated periods of 1-7, 1-21, and 1-42 days of age. Carcass yield and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative additives; Plant extracts; Essential oils. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000400002 |
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| Nascimento,GR do; Murakami,AE; Guerra,AFQM; Ospinas-Rojas,IC; Ferreira,MFZ; Fanhani,JC. |
| This study evaluated the effects of different sources of vitamin D and calcium levels on performance, egg quality and bone strength of hens in the second production cycle. A total of 384 Hy-Line W36 birds with 80 weeks of age were used, alloted into 3 x 4 factorial design (sources of vitamin D: cholecalciferol; 25(OH)D3 and 1.25(OH)2D3 x calcium levels: 2.85, 3.65; 4.45 and 5.25%) with four replicates and eight birds each. The performance was evaluated for three cycles of 28 days each, egg quality was evaluated in the last four days of each cycle and bone strength on the last day of the experimental period. There was no interaction (p > 0.05) between the different sources of vitamin D and calcium levels in all parameters evaluated. There was a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cholecalciferol; 25 hydroxycholecalciferol; 1.25 dihydroxycholecalciferol. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200005 |
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| Sgavioli,S; Santos,ET; Domingues,CHF; Quadros,TCO; Castiblanco,DMC; Andrade-Garcia,GM; Amoroso,L; Nääs,IA; Garcia,RG; Baraldi-Artoni,SM. |
| ABSTRACT Adequate environmental temperature control is essential for incubation efficiency. Layer breeder eggs (n=360) were weighed and distributed in a completely randomized experimental design with two treatments, consisting of two incubation temperatures (T1=37.5 °C, control; and T2=39.0 °C, hot), with two incubators per temperature, and 90 eggs per incubator, totaling 360 eggs. Hatchability, embryo mortality, and chick cloacal and body surface temperatures were not affected by incubation temperature. Eggs incubated at the hot temperature presented greater egg mass loss and higher eggshell conductance than those incubated at the control temperature. Layer chicks derived from eggs incubated at control temperature showed greater absolute weight, yolk-free... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body weight; Cloacal temperature; Conductance; Hatchability; Loss of mass. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000600041 |
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| Zhong,S; Liu,H; Zhang,H; Han,T; Jia,H; Xie,Y. |
| ABSTRACT The effects of the Kluyveromyces marxianus M3 strain, isolated from Tibetan mushrooms, on plasma lipids, egg cholesterol level, egg quality, and intestinal health of laying hens were evaluated. In total, 160 Beijing fatty laying hens (43 weeks old) were divided into four groups and fed a basal diet supplemented with 0%, 0.1%, 0.3%, or 0.5% freeze-dried K. marxianus M3 powder for four weeks. The results showed that yeast supplementation reduced serum total cholesterol (TC), triglyceride (TG), low density lipoprotein-cholesterol (LDL-C), and very low density lipoprotein-cholesterol (VLDL-C) levels (p<0.01), and increased serum high density lipoprotein-cholesterol (HDL-C) level (p<0.05). Moreover, regardless of K. marxianus M3 dietary addition... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blood parameters; Cholesterol; Egg production; Poultry nutrition; Serum. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000200261 |
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| Gonzales,E; Leandro,NSM; Dalke,F; Brito,AB; Cruz,CP. |
| Effects of yolk sac removal (deutectomy) upon performance of chicks from three divergent strains were tested to evaluate the importance of endogenous nutrition on the post-hatch phase. Chicks from three different strains (Hy-Line W98, Cobb 500, and JA57) were submitted to a surgery procedure after hatching. Half of them had the residual yolk removed, and the other constituted a sham-deutectomized group. After operation, chicks were designated to a 3 x 2 factorial design (3 strains x 2 presence/absence of yolk sac), in a total of six experimental groups and ten replications of two to four birds. During 14 experimental days all birds were fed ad libitum a 21% CP and 3050 kcal/kg EM mash diet. Data were analyzed by ANOVA, and Tukey's test (p<0.05).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Body weight; Chick; Deutectomy; Strain; Yolk sac. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300006 |
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| Rauber,RH; Perlin,VJ; Fin,CD; Mallmann,AL; Miranda,DP; Giacomini,LZ; Nascimento,VP do. |
| This study was conducted to determine the interference of Salmonella typhimurium lipopolysaccharide (sLPS) on the performance, biological parameters, and histological evaluations of 198 one-day-old male broiler chickens divided into three treatments according to sLPS dose (0, 250, or 500 µg/application/bird) that was applied to the birds every other day, from 15 to 27 days of age. At the end of the experiment (28 days), significant effects were observed on body weight (R= -0.17 and P=0.05), total cholesterol serum levels(R=0.43 and p<0.01), phosphorus (R=0.53 and P<0.01), uric acid (R= -0.38 and P<0.01), C-reactive protein (R=0.68 and p<0.01), serum activity of aspartate aminotransferase (R=0.39 and p<0.01) and alkaline phosphatase (R= -0.39... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Poultry; Clinical biochemistry; Endotoxin; Body weight. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100011 |
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| Lima,RB; Rabello,CBV; Lima,SBP de; Figueiredo-Lima,DF; Siqueira,JC de; Vilar da Silva,JH; Silva,EP da. |
| A fibrolytic enzyme complex was added to the pre-starter diet. Broiler chicks were randomly distributed into five treatments, consisting of a diet with no enzyme addition and four test diets supplemented with 100, 200, 300 and 400g/T of an enzyme complex. The dietary inclusion of the enzyme complex increased weight gain, and the dose of 300g/T improved weight gain and worsened feed conversion ratio. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Galactosidase; Galactomannanase; Glucanases; Xylanases. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000300010 |
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| Ludke,MCMM; Pimentel,ACS; Ludke,JV; Silva,JCNS; Rabello,CBV; Santos,JS. |
| ABSTRACT The objective of this study was to evaluate the effect of diets formulated with corn plus soybean meal (CSM) or with 21% autoclaved castor meal (ACM), with the addition of two enzyme complexes (EC1 and EC2), on the performance and egg quality of laying quail. Two hundred and sixteen quails were selected by egg production and weight uniformity and distributed in a completely randomized design with six treatments (in a 2 × 3 cross-factorial arrangement) and six replicates with six birds each. Three CSM and three ACM diets supplemented withEC1, EC2, or unsupplemented were established. The trial lasted three cycles of 21 days. Feed intake, laying rate, egg mass, feed conversion per egg mass, and feed conversion per dozen eggs did not differ. The use... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Autoclaved castor meal; Enzymes; Laying quails; Protein source. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2018000400781 |
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| Ribeiro,AML; Dahlke,F; Kessler,AM. |
| The supplementation of vegetal diets with L-methionine (100% molar), methionine hydroxyl analogue (HMB) (88% molar) or DL-methionine (99% molar) was compared as to the performance of broilers allocated in cages and submitted to cyclic heat stress (CHS). The trial was carried out from 21 to 42 days of age. Two levels of synthetic methionine were supplemented for each methionine source (0.1 or 0.3 %), and the control treatment was not supplemented with synthetic methionine (negative control). Statistical analyses included the negative control treatment or were performed in a 3 x 2 factorial design (sources x levels). Addition of synthetic methionine to the basal level containing 0.63 % of total sulphur amino acids significantly improved feed conversion (FC)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Methionine source; Poultry; Sulphur amino acids; Temperature. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000300004 |
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| Registros recuperados: 1.268 | |
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