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| Registros recuperados: 17 | |
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| Carrijo,AS; Pezzato,AC; Ducatti,C. |
| Os isótopos estáveis do carbono que eram utilizados em estudos ecológicos e paleoecológicos apresentaram um incremento nos últimos trinta anos, na utilização em estudos dietéticos em animais. Entretanto, existem poucas informações sobre o padrão metabólico e sobre as taxas de turnover do 13C em aves. O presente experimento estabeleceu curvas de substituição e taxas de movimentação do 13C no ovo e no fígado de aves de postura adultas, pela substituição da ração comercial por dietas compostas de grãos dos ciclos fotossintéticos C3 e C4, durante 50 dias. A diferença no conteúdo isotópico do delta per mil do carbono-13 (delta 13C) entre as duas dietas foi de 16,13. A taxa de substituição do 13C das dietas, nos tecidos, adequou-se num modelo exponencial,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carbono-3; Carbono-4; Fracionamento isotópico; Isótopos estáveis; Metabolismo nutricional. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000300003 |
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| Benedetti,MP; Sartori,JR; Carvalho,FB; Pereira,LA; Fascina,VB; Stradiotti,AC; Pezzato,AC; Costa,C; Ferreira,JG. |
| The objective of this study was to evaluate the effect of corn texture and the particle size on broiler performance, carcass yield, nutrient digestibility, and digestive organ morphometrics. In Experiment I, 720 male Cobb chicks were distributed in a completely randomized experimental design with a 2 x 3 factorial arrangement, consisting two corn textures (dented and hard) and three corn particle sizes, was applied, with four replicates of 30 birds each. Corn particle size was classified according to geometric mean diameter (GMD) as fine - 0.46 mm; medium - 0.73 mm, and coarse - 0.87 mm. In Experiment II, 120 broiler chicks were used to evaluate corn digestibility during the periods of 16 to 22 days and 35 to 41 days of age, using the method of total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass traits; Digestibility; GMD; Particle size; Performance. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000400002 |
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| Pelícia,VC; Sartori,JR; Zavarize,KC; Pezzato,AC; Stradiotti,AC; Araujo,PC; Mituo,MAO; Madeira,LA. |
| This study aimed at evaluating the effect of nucleotides on the performance and carcass yield of broilers fed diets with no antibiotic growth promoters (AGP), anticoccidials, or animal feedstuffs. In the trial, 600 Ross 308 male broilers were distributed in a completely randomized experimental design into six treatments with four replicates of 25 birds each. Treatments consisted of a control diet (CD), CD + AGP, CD + 0.04%, CD + 0.05%, CD + 0.06%, and CD + 0.07% nucleotides. The experimental diets did not contain anticoccidials, and birds were vaccinated against coccidiosis at three days of age. No significant differences were detected among broilers submitted to the different treatments in none of the studied parameters. Under the conditions of this... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Nucleotides; Performance. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100004 |
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| Fascina,VB; Pasquali,GAM; Carvalho,FB; Muro,EM; Vercese,F; Aoyagi,MM; Pezzato,AC; Gonzales,E; Sartori,JR. |
| ABSTRACT The present study was conducted to evaluate the effects of phytogenic additives (PA) and organic acids (OA), alone or in combination, on the performance, intestinal histomorphometry and lipid oxidation, and immune responses of broiler chickens. In this experiment, 820 one-day-old chicks were distributed according to a completely randomized design in a 2 × 2 + 1 factorial arrangement, with four replicates of 41 broilers each. The dietary treatments consisted of a control diet with no PA or OA (CD); CD with OA and no PA (CD+OA-PA); CD with PA and no OA (CD+PA-CD); CDwith both PA and OA (CD+PA+CD); and CD + avilamycin + monesin sodium. Broiler performance was not affected by the alternative feed additives, except from 1 to 21 days, when broilers fed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acidifier; Essential oil; Immunity; Intestinal histology; Plant extract. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2017000300497 |
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| Guerreiro Neto,AC; Pezzato,AC; Sartori,JR; Mori,C; Cruz,VC; Fascina,VB; Pinheiro,DF; Madeira,LA; Gonçalvez,JC. |
| This present study aimed at evaluating the effect of the addition of an emulsifier to diets containing soybean oil, poultry fat or their blend, on the performance, carcass traits, serum lipid levels, pancreatic lipase concentration and nutrient digestibility of broilers. A randomized block design was applied using a 3 x 2 factorial arrangement, with three fat sources (soybean oil, poultry fat, and a blend of 50% soybean oil and 50% poultry fat) and the addition or not of an emulsifier. In experiment I, broiler performance, carcass traits, serum cholesterol, HDL, and triglyceride levels, and pancreatic lipase activity in 42-day-old broilers were evaluated. In experiment II, dry matter (DM), ether extract (EE), crude protein (CP) and crude fiber (CF)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestibility; Pancreatic lipase; Performance; Poultry offal fat; Serum lipids; Soybean oil. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2011000200006 |
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| Cruz-Polycarpo,VC; Sartori,JR; Gonçalves,JC; Pinheiro,DF; Madeira,LA; Polycarpo,GV; Zanetti,LH; Santos,TS; Pezzato,AC. |
| The effects of the dietary substitution of dry corn by high-moisture corn grain silage (HMCGS) were evaluated on the performance, nutrient digestibility and serum biochemical parameters of broilers reared in an alternative production system and submitted to different environmental temperatures. A total of 288 one-day-old male Cobb chicks were distributed according to a randomized block design in a 3x4 factorial arrangement: three environmental temperatures (hot, thermoneutral or cold) and four levels of HMCGS in substitution of dry corn (0%, 20%, 40% or 60%). The acid analysis showed that the evaluated HMCGS contained average percentage values of ethanol, lactic acid, and acetic acid (expressed in 100% of dry matter) of 0.7690, 2.7320 and 0.0249%,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Absorption; Alternative feeds; Poultry; Cholesterol; Metabolism; Triglycerides. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000400017 |
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| Stradiotti,AC; Bendassolli,JA; Ducatti,C; Sartori,JR; Pelícia,VC; Araujo,PC; Maruno,MK; Pezzato,AC. |
| ABSTRACT The objective of this study was to evaluate the process of L-methionine incorporation in the blood plasma, liver, breast muscle, and abdominal fat of 35- to 59-d-old broiler chickens using the carbon stable isotope (12C and 13C) technique for the estimation of methionine requirements. In this experiment, 51 male broiler chickens orally received a solution of L-[13C1] methionine (92 atm % 13C) at 29 µmol/kg live weight/h for 6 h. Three birds were sacrificed for tissue collection at times 0 h (control), 0.5, 1, 2, 3, 4, 5, 6, 12, 24, 48, 72, 96, 120, 144, 168, and 336 h after the administration of the first dose. Tissue L-[13C1] methionine incorporation mass and percentage results were analyzed using Minitab 16 statistical software. Except for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Isotopic dilution; Labeled isotopes; Turnover. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000400719 |
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| Zavarize,KC; Sartori,JR; Gonzales,E; Pezzato,AC. |
| The present study aimed at evaluating the histo-morphological changes resulting from different fasting periods before the collection of tissue samples in different segments of the small intestine (duodenum, jejunum and ileum) of 7-d-old male chicks of a broiler and a layer strain. A completely randomized experimental design in in a 2x7 factorial arrangement, being two strains with different growth rates (Ross 308 and HyLine® W36) and seven fasting periods (0, 2, 4, 6, 8, 10 and 12 hours ), with six replicates, totaling 84 birds. The comparison of the morphometrics of the duodenum, jejunum and ileum of broiler and layer chicks demonstrated faster digestive tract development in broilers relative to layers. The fasting period caused morphological changes in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fasting; Intestine; Morphology; Organs; Strain. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100004 |
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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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| Denadai,JC; Sartori,JB; Pezzato,AC; Costa,VE; Sartori,MMP; Petinati,BES; Gennari,RS; Silva,ET; Carvalho,MAG; Ishizuka,AND. |
| ABSTRACT The objective of this study was to determine if lipid extraction processes alter the isotopic value of δ13C and δ15N of tissues (pectoral muscle, thigh and liver) and eggs and if the use of anticoagulants interferes with blood and plasma δ13C and δ15N isotopic values. Samples were acquired from the same flock of birds. The 32 egg samples were randomly divided into four treatments (liquid, dehydrated, and fat-extracted with ether or chloroform + methanol) with eight replicates each. The 24 samples of pectoral muscle, thigh muscle and liver of broilers were randomly divided into three treatments (dehydrated, fat-extracted with ether and chloroform + methanol) with eight replicates each. Blood samples were divided into a 3x3 factorial arrangement... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carbon-13; Broilers; Nitrogen-15; Laying hens. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000100302 |
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| Denadai,JC; Ducatti,C; Pezzato,AC; Carrijo,AS; Caldara,FR; Oliveira,RP. |
| This paper aimed at evaluating the influence of diets containing different isotopic values of carbon-13 turnover on the half-life of egg (yolk + albumen), yolk and albumen individually, and blood of poultry using delta13C isotopic variation. Commercial layers fed four experimental isocaloric and isonitrogenous diets (RC4, RC3, RMC4 and RMC3) containing different isotopic values, during an experimental period of 56 days. Turnover of the studied tissues was influenced by the experimental diets. Blood and albumen were more influenced by dietary treatments as compared to egg and yolk. The RMC3 diet induced better performance (better feed intake and higher egg production) due faster rate of carbon substitution than the RC4 diet, and lower half-life for egg... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Albumen; Carbon-13; Yolk; Blood; Egg; Comercial laying hens. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2006000400008 |
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| Denadai,JC; Ducatti,C; Sartori,JR; Pezzato,AC; Móri,C; Gottmann,R; Mituo,MAO; Bordinhon,AM. |
| The aim of this study was to trace the inclusion of animal meals in layer diets by analyzing eggs and their fractions (yolk and albumen) using the technique of carbon and nitrogen isotopes. Two-hundred and eighty-eight (288) 73-week-old Shaver White layers, never fed animal ingredients, were randomly distributed in six treatments with six replicates each. The treatments were: control - corn and soybean meal based diet and five other experimental diets including bovine meat and bone meal (MBM); poultry offal meal (POM); feather meal (FM); feather meal and poultry offal meal (OFM), and poultry offal meal, feather meal, and meat and bone meal (MBOFM). The isotopic results were submitted to multivariate analysis of variance. Ellipses were determined through an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Albumen; Poultry; Yolk; 13C; 15N. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000300010 |
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| Sernagiotto,ER; Ducatti,C; Sartori,JR; Stradiotti,AC; Maruno,MK; Araujo,PC; Carvalho,FB; Pezzato,AC. |
| The objective of the present study was to trace the inclusion of poultry offal meal (POM) in the diet of meat-type quails reared for a long period using the technique of stable isotopes. A number of 320 quails were randomly distributed into eight treatments: vegetable diet (T1), and a diet containing 8% POM were fed until the end of the experimental period (T2) or replaced by the vegetable diet on day 42 (T3), 56 (T4), 70 (T5), 84 (T6), 98 (T7), and 112 (T8). Breast muscle samples were collected from four birds randomly selected per treatment every 14 days. The obtained isotope results were submitted to multivariate analysis of variance (MANOVA) with the aid of the GLM procedure of statistical SAS program. Treatments were different from T1 when birds were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carbon-13; Quail production; Stable isotopes; Nitrogen-15; Traceability. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000100011 |
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| Kanayama,JS; Pezzato,AC; Sartori,JR; Ducatti,C; Novaes,VHC; Fascina,VB; Araújo,PC; Carvalho,FB. |
| The objective of this study was to verify if the dietary inclusion of sugarcane yeast at levels commonly used in broiler diets influences the traceability of cattle meat meal and poultry offal meal, using the technique of stable carbon and nitrogen isotopes in the breast muscle of chickens. A number of 325 one-d-old male broilers were randomly distributed into 13 treatments with 25 birds each. Treatments consisted of a control diet based on corn and soybean meal, and the inclusion of 1, 2, 4, or 6% meat and bone meal, poultry offal meal or sugarcane yeast. At 42 days of age, six birds per treatment were randomly selected, sacrificed, and their breast muscle was collected for isotopic ration analysis. The isotopic ratio of birds fed the diet with inclusion... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Animal by product meals; Broilers; Isotopes; Sugarcane yeast; Traceability. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2012000100009 |
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| Oliveira,RP; Ducatti,C; Pezzato,AC; Denadai,JC; Cruz,VC; Sartori,JR; Carrijo,AS; Caldara,FR. |
| Our goal was to trace the inclusion of poultry offal meal (OM) in diets by using carbon (13C/12C) and nitrogen (15N/14N) isotopic ratios of different tissues in order to contribute for the development of an independent technology for the certification of the feeding of broilers reared on diets with no addition of animal ingredients. Eighty one-day-old chicks were randomly distributed into five experimental treatments, that is, diets containing increasing levels of OM inclusion (0, 2, 4, 8 and 16% OM), with four replicates of four birds each. At 42 days of age, four birds per treatment (n=4) were randomly selected, weighed, and sacrificed to collect breast muscle (Pectoralis major), keel and tibia samples to determine their isotopic ratios (13C/12C e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Broilers; Carbon-13; Certification; Feeding regime; Nitrogen-15. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2010000100002 |
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| Registros recuperados: 17 | |
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