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Dietary levels of potassium for broiler chickens Rev. Bras. Ciênc. Avic.
Oliveira,JE; Albino,LFT; Rostagno,HS; Páez,LE; Carvalho,DCO.
Three experiments were conducted to determine the nutritional requirements of potassium (K) for male Ross broiler chickens, from 8 to 21, 22 to 42 and 43 to 53 days of age. The following parameters were evaluated: body weight gain (BWG), feed intake (FI) and feed conversion ratio (FCR). In each experiment, a completely randomized experimental design was used, with six treatments (K levels), and six, eight and eight numbers of replicates, and eight, five and four birds per pen, respectively. The experimental diets were basal diets deficient in K but supplemented with K carbonate to result in levels of 0.30, 0.44, 0.58, 0.72, 0.86 and 1.00% K. Estimated requirements for BWG were 0.628, 0.714 and 0.798% K, for the periods 8-21, 22-42 and 43-53 d, respectively.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Broiler chickens; Ion; Mineral; Potassium; Requirement; Weight gain.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000100006
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Digestible lysine requirements of broilers Rev. Bras. Ciênc. Avic.
Bernal,LEP; Tavernari,FC; Rostagno,HS; Albino,LFT.
Modern broilers have been submitted to continuous genetic improvement, and therefore, their nutritional requirements must be constantly updated to ensure their performance. Two experiments were carried out to evaluate different digestible lysine levels for starter (1021 days) and grower (22-35 days) phases. The experiments were carried out with male and female Cobb 500 broilers, distributed according to a randomized block experimental design in a 5x2 factorial arrangement (5 increasing digestible lysine levels x 2 sexes), totaling 10 treatments, with 8 replicates of 22 and 20 birds during the starter and grower phase, respectively. Digestible lysine levels of 1.06, 1.12, 1.18, 1.24, and 1.30 were used in the starter diets (10-21 days) and 0.9, 0.98, 1.04,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Digestible lysine; Requirement; Performance; Broiler.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100007
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Effects of dietary digestible lysine levels on protein and fat deposition in the carcass of broilers Rev. Bras. Ciênc. Avic.
Tavernari,F de C; Buteri,CB; Rostagno,HS; Albino,LFT.
An experiment was carried out to evaluate the effects of different levels of digestible lysine in the diets of male and female broilers on protein and fat deposition. A total of 2160 Avian Farms broilers. A completely randomized experimental design was applied, and treatments consisted of the effects of three digestible lysine levels nested within each sex, with 12 replicates and 30 birds per experimental unit. The adopted digestible lysine levels corresponded to 92.5, 100.0, and 107.5% of the nutritional requirements of phases 1 to 21 days, 22 to 42 days, and 43 to 56 days of age, respectively. In each phase, the experimental diets contained similar calorie and protein levels within each sex. No significant effects of lysine levels were found on dry...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avian Farms; Body composition; Gompertz equation.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000200005
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Effects of Dietary L-Glutamine or L-Glutamine Plus L-Glutamic Acid Supplementation Programs on the Performance and Breast Meat Yield Uniformity of 42-d-Old Broilers Rev. Bras. Ciênc. Avic.
Ribeiro Jr,V; Albino,LFT; Rostagno,HS; Hannas,MI; Ribeiro,CLN; Vieira,RA; Araújo,WAG de; Pessoa,GBS; Messias,RKG; Silva,DL da.
ABSTRACT This study aimed at evaluating four dietary L-Glutamine (L-Gln) or L-Gln plus L-Glutamate (L-Glu) supplementation programs on the performance, breast yield, and uniformity of broilers. A total of 2,112 one-d-old male Cobb 500(r) broilers were distributed according to a randomized block design in a 2 × 4 factorial arrangement (L-Gln or L-Gln plus L-Glu × 4 supplementation programs), totaling eight treatments with 12 replicates of 22 broilers each. The supplementation programs consisted of the dietary inclusion or not of 0.4% of L-Gln or L-Gln plus L-Glu for four different periods: 0 days (negative control), 9d, 21d, and 42d. Feed intake (FI, g), body weight gain (BWG, g), feed conversion ratio (FCR, kg/kg), coefficient of variation of body weight...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Breast; Growth; Non-essential amino acids; Uniformity.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000093
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Effects of Different Dietary Levels of Two Types of Olive Pulp and Exogenous Enzyme Supplementation on the Gastrointestinal tract size, Immunology and Hematology of Broilers Rev. Bras. Ciênc. Avic.
Sayehban,P; Seidavi,A; Dadashbeiki,M; Ghorbani,A; Araújo,WAG; Albino,LFT.
ABSTRACT The effects of the dietary inclusion of olive pulp (OP) and the supplementation of a commercial enzyme blend (ENZ) on the gastrointestinal tract (GIT) size, and immune and hematological parameters were evaluated. In total, 600 one-day-old Ross 308 male broiler chicks were divided into 6 treatments according to a completely randomized design, in a 2×2×2 factorial scheme, consisting of the dietary inclusion of two olive pulp levels (50 and 100 g/kg in diet), two pulp categories (processed and unprocessed), and the inclusion or not of an enzyme blend. On d 42, birds were euthanized and blood samples were collected, and lymphoid, hematologic, and GIT organs were measured. The inclusion of 100g/kg OP in the diets increased jejunum relative weight (J%)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alternative feedstuffs; Immune responses; Natural antioxidants; Processing; Visceral physiology..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015001000073
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EFFECTS OF DIFFERENT LEVELS OF TWO TYPES OF OLIVE PULP WITH OR WITHOUT EXOGENOUS ENZYME SUPPLEMENTATION ON BROILER PERFORMANCE AND ECONOMIC PARAMETERS Rev. Bras. Ciênc. Avic.
Sayehban,P; Seidavi,A; Dadashbeiki,M; Ghorbani,A; Araújo,WAG; Albino,LFT.
ABSTRACT The effects of the dietary inclusion of olive pulp (OP) and supplementation birds with a commercial enzyme blend (ENZ) on the performance of broilers were evaluated. Six hundred one-day-old male Ross 308 broilers were divided according to a completely randomized design into 10 treatments in a 2×2×2+2 factorial arrangement, consisting of two olive pulp levels (50 and 100 g/kg diet), two pulp categories (processed and non-processed), the inclusion or not of an enzyme blend supplement, and two control treatments without OP and the inclusion or not of the enzyme blend in the diet. Feed intake (FI), weight gain (WG), feed efficiency (FE), energy intake (EI), energy efficiency (EE), protein intake (PI), protein efficiency (PE), feed cost per kg live...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feedstuffs; Byproducts; Poultry; Processing.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300489
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Effects of different nutritional plans on broiler performance Rev. Bras. Ciênc. Avic.
Buteri,CB; Tavernari,F de C; Lelis,GR; Rostagno,HS; Albino,LFT.
An experiment was carried out at the Department of Animal Science of the Federal University of Viçosa, Brazil, to evaluate the effects of different nutritional plans on the performance of male and female Ross broilers. A completely randomized experimental design with a 6x2 factorial arrangement (six nutritional plans x two sexes) with six replicates of 20 birds per experimental unit was applied. The nutritional plans adopted for males and females included 3, 5, or 28 feeds, and the other 3 plans included 28 feeds containing 92.5, 100, and 107.5% of digestible lysine requirements established according to a mathematical model developed exclusively for Ross broilers. The results showed that the tested 28-feed feeding programs are equivalent, and allow similar...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding programs; Lysine levels; Nutritional requirements.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400003
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Enzyme Complex Added to Broiler Diets: Effects on Performance, Metabolizable Energy Content, and Nitrogen and Phosphorus Balance Rev. Bras. Ciênc. Avic.
Pessôa,GBS; Ribeiro Junior,V; Albino,LFT; Araújo,WAG; Silva,DL; Hannas,MI; Rostagno,HS.
ABSTRACT Two trials were performed to evaluate the effects of an enzyme complex (EC) on broiler performance, metabolizable energy, and phosphorus and nitrogen balance. In the first trial, 960 one-day-old male Cobb broilers were randomly distributed in a 3 x 2 factorial arrangement (three nutritional levels and the inclusion or not of EC), totaling six treatments with eight replicates of 20 birds per pen, and reared until 42 days of age. The control diet was formulated to meet the broilers' nutritional requirements. The other diets contained reduced available phosphorus (P), metabolizable energy, and amino acid levels, considering 100% and 150% of the EC nutritional matrix. The inclusion of the EC (200 g/ton) resulted in better broiler performance,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Additives; Broiler; Enzyme.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300467
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Evaluation of nutrient excretion and retention in broilers submitted to different nutritional strategies Rev. Bras. Ciênc. Avic.
Graña,AL; Tavernari,FC; Lelis,GR; Albino,LFT; Rostagno,HS; Gomes,PC.
An experiment was carried out to evaluate the effects of different nutritional strategies on nitrogen (N), phosphorus (P) and calcium (Ca) balance and on copper (Cu), manganese (Mn) and zinc (Zn) excretion in broilers during the periods of 1 to 21 days and 1 to 46 days of age. Four hundred male Cobb-500 broilers were used. A randomized block experimental design was applied, including five treatments with eight replicates of 10 birds each. A five-phase feeding program was adopted (1-8, 9-21, 22-33, 34-40 and 41-46 days of age). Treatments consisted of a control diet (C) with typical protein level and low amino acid supplementation; a reduced-protein diet supplemented with synthetic amino acids formulated on ideal protein concept (IP); C with phytase (C+PHY)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Enzyme; Phosphorus; Organic trace minerals; Ideal protein.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000200013
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Inclusion of sunflower meal, with or without enzyme supplementation, in broiler diets Rev. Bras. Ciênc. Avic.
Tavernari,FC; Albino,LFT; Morata,RL; Dutra Júnior,WM; Rostagno,HS; Viana,MTS.
Two experiments were carried out to evaluate the effects of the dietary inclusion of different dietary sunflower meal (SFM) levels (0% and 20%), with or without the supplementation of an enzyme complex (EC) (cellulase, β-glucanase, xylanase, and phytase) on broiler performance, carcass and cuts yields, economics, and dietary AMEn values. A randomized block experimental design, with a 2x2 factorial arrangement of eight replicates of 20 birds each, was used to test performance. A completely randomized experimental design with a 2x2 factorial arrangement of eight replicates of four birds each was used to test metabolism. No interaction effects between SFM and EC were observed on performance. Although SFM significantly reduced feed intake in the starter phase...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alternative feedstuffs; Broiler production; Enzyme complex.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2008000400007
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Performance of layers fed diets containing different oils Rev. Bras. Ciênc. Avic.
Lelis,GR; Silva,MD da; Tavernari,F de C; Albino,LFT; Rostagno,HS.
A trial was carried out at the Animal Science Department of the Federal University of Viçosa to evaluate the performance of heavy and light layers. During four periods of twenty-eight days, 432 layers in the second production cycle, being 216 Hy Line W36 (light birds) and 216 Hy Line Brown (heavy birds), were used. A completely randomized experimental design with a 1+(4x2x2) factorial arrangement (one control treatment, four oil sources, two inclusion levels, and two genetic lines) with four replicates of six birds per experimental unit, was applied. The treatments consisted of diets containing 16.5% crude protein, formulated to supply the nutritional requirements, and the inclusion of each oil source at 2 or 4%. Soybean, canola, linseed and fish oils were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Canola oil; Fish oil; Layers; Linseed oil; Performance; Soybean oil.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2009000400004
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Resultados de Pesquisa em Nutrição de Aves no Brasil: Resumo dos Ultimos 5 anos Rev. Bras. Ciênc. Avic.
Nunes,RV; Nascimento,AH; Albino,LFT; Rostagno,HS.
Foi realizada uma revisão bibliográfica sobre as pesquisas brasileiras na área de nutrição avícola, entre 1994 a l999. Nesse período, foi publicado um total de 496 trabalhos, com uma média de 82,7 trabalhos/ ano. Os trabalhos na área de nutrição revelaram que 64,52% foram realizados com frangos de corte; 24,19%, com poedoiras e aves de reposição; 3,93%, com matrizes pesadas; e 7,66%, com outras aves. Com relação às publicações em forma de resumos expandidos, foram publicados 226 e 163 resumos, nos Anais das Reuniões Anuais da Fundação APINCO de Ciência e Tecnologia Avícolas e da Sociedade Brasileira de Zootecnia, respectivamente. Na Revista da Sociedade Brasileira de Zootecnia e no Arquivo Brasileiro de Medicina Veterinária e Zootecnia foram publicados,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Avicultura; Nutrição; Publicações.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2000000200002
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Sunflower meal and enzyme supplementation of the diet of 21- to 42-d-old broilers Rev. Bras. Ciênc. Avic.
Araújo,WAG de; Albino,LFT; Rostagno,HS; Hannas,MI; Pessoa,GBS; Messias,RKG; Lelis,GR; Ribeiro Jr,V.
The objective of this study was to evaluate the performance of male broilers between 21 and 42 days of age fed diets supplemented with an enzyme blend (EB) and containing graded levels of sunflower meal (SFM). In total, 1920 male Cobb broilers were distributed according to a randomized block experimental design in a 4 x 3 factorial arrangement (four SFM dietary levels vs. three feed formulations) with eight replicates of 20 birds each. Dietary SFM inclusion levels were 0, 8, 16, and 24%. Feed formulation included one negative control diet (NC) formulated to supply broiler nutritional requirements, considering EB nutritional matrix values; a diet formulated as the first one, but with the addition of 0.5% EB (NC+EB); and the third diet (positive control -...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sunflower meal; Broilers; Enzyme blend; Alternative feedstuffs.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000200002
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Sunflower Meal and Supplementation of an Enzyme Complex in Layer Diets Rev. Bras. Ciênc. Avic.
Araújo,WAG; Albino,LFT; Rostagno,HS; Pessoa,GBS; Cruz,SCS; Lelis,GR; Carneiro,PRO; Vieira,RA.
ABSTRACTThe objective of this experiment was to evaluate the performance of 64- to 79-wk-old laying hens fed diets supplemented with an enzyme complex (EC) and containing increasing sunflower meal (SFM) levels. A total of 384 Hy-Line Brown layers were distributed according to a randomized block design in a 4 × 2 factorial arrangement (four levels of SFM, and inclusion or not of EC), with eight replicates of six birds each unit. The levels of SFM inclusion were 0, 8, 16 and 24%, utilized in two distinct diets. Diets were calculated to meet all the nutritional requirements of birds, except for the nutrients that would be made available by the nutritional matrix of the enzyme complex, with or without utilization of EC. The parameters analyzed were feed intake...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Alternative feedstuffs; Eggs quality; Feed costs; Poultry..
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2015000300363
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The effect of dietary phytase on broiler performance and digestive, bone, and blood biochemistry characteristics Rev. Bras. Ciênc. Avic.
Sousa,JPL de; Albino,LFT; Vaz,RGMV; Rodrigues,KF; Da Silva,GF; Renno,LN; Barros,VRSM; Kaneko,IN.
The dietary inclusion of phytase increases nutrient and energy bioavailability for broilers. The effect of phytase increases nutrients and energy bioavailability for either the objective of this experiment was to evaluate the influence of nutrient and energy reduction in diets supplemented with phytase on the performance, gastrointestinal pH, organ and bone composition, and blood biochemistry of broilers between eight and 21 days of age. In the study, 1.120 male Cobb 500(r) broilers, with 161±1g average weight, were used. At eight days of age, birds were distributed according to a completely randomized experimental design with seven treatments in a 3x2+1 factorial arrangement with eight replicates of 20 broiler each. Treatments corresponded to reduction of...
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=S1516-635X2015000100069
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