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Apparent calcium retention and digestibility coefficients of limestone with dif...
Diana,Thiago Ferreira; Calderano,Arele Arlindo; Rostagno,Horácio Santiago; Marques,Maria Rita de Lima; Tavernari,Fernando de Castro; Veroneze,RenataABSTRACT Apparent calcium (Ca) retention and digestibility coefficients are affected by limestone particle size in the diet of laying hens. This study aimed to determine the apparent retention and digestibility coefficients of Ca in limestone of different particle sizes in laying hens. The study comprised 288 Lohmann Brown laying hens (50 weeks of age; 1,964 ± 98 g) distributed in a completely randomized experi...
Purified lignin supplementation on the performance and antioxidant status of br...
Nunes,Rayanne Andrade; Albino,Luiz Fernando Teixeira; Campos,Paulo Henrique Reis Furtado; Salgado,Hallef Rieger; Borges,Samuel OliveiraABSTRACT The objective of this study was to evaluate the effects of dietary supplementation of purified lignin on the performance, relative organ weights, serum metabolites, and gene expression profiles of broiler chickens subjected to cyclic heat stress (HS). At 22 days old, 280 broilers were distributed in a completely randomized design with four treatments, ten repetitions, and seven birds per experimental u...
Effect of phytase and protease combination on performance, metabolizable energy...
Bernardes,Romário Duarte; Oliveira,Carlos Henrique de; Calderano,Arele Arlindo; Ferreira,Rafael de Sousa; Dias,Kelly Morais MaiaABSTRACT Three experiments were carried out to evaluate the effect of dietary combination of different enzymes (phytase + protease) on performance, metabolizable energy, and amino acid digestibility of broiler chickens fed diets with nutritional reduction. A total of 1,400, 336, and 384 male chickens were distributed in a completely randomized design, in the experiments of performance, metabolism, and digestibi...
Organic trace minerals and calcium levels in broilers' diets to 21 days old
Faria,Bruno Damaceno; Silva,Leandro Moreira; Ribeiro Junior,Valdir; Ferreira,Adriana Helena do Nascimento; Rostagno,Horacio SantiagoABSTRACT: This study was undertaken to evaluate the effects of dietary calcium levels and supplementation with organic trace minerals selenium, copper, iron, zinc and manganese on performance, tissue deposition and litter mineral concentration. A total of 2,496 one-day-old male Cobb 500 broilers were randomly assigned to a 3 × 4 factorial experimental design with three levels of dietary Ca [8, 10 and 12 g kg–1,...
Effects of dietary nucleotide supplementation on growth performance and physiol...
Kreuz,Bruna Strieder; Rocha,Gabriel Cipriano; Campos,Paulo Henrique Reis Furtado; Fonseca e Silva,Fabyano; Hannas,Melissa IzabelABSTRACT The objective of this study was to evaluate the effects of dietary nucleotide supplementation on growth performance, serum immunoglobulin G (IgG) and uric acid levels, immune-related organs, and intestinal morphometric parameters of broiler chickens under pre- and post-inflammatory challenge with lipopolysaccharide (LPS). Ninety-six seven-day-old male broiler chicks were randomized in a 2×2 factorial d...
Reduction of calcium levels in rations supplemented with vitamin D3 or 25-OH-D3...
Tizziani,Tarciso; Donzele,Rita Flavia Miranda de Oliveira; Donzele,Juarez Lopes; Silva,Amanda Dione; Muniz,Jorge Cunha Lima; Jacob,Rodrigo de FreitasABSTRACT An experiment was carried out to verify the response to the Ca reduction levels of diets with different vitamin D sources on performance, bone mineral deposition, serum concentrations, digestibility, carcass characteristics, and meat quality of broiler chickens in the period from 1 to 42 days reared in thermoneutral environment. A total of 504 male broilers with one day of age and average weight of 43....
Cassava bagasse and annatto colorific (Bixa orellana L.) in diets for slow-grow...
Parente,Iberê Pereira; Albino,Luiz Fernando Teixeira; Rodrigues,Kênia Ferreira; Vaz,Roberta Gomes Marçal Vieira; Sousa,Luciano FernandesSUMMARY The performance and breast skin color of slow-growing broilers from 30 to 90 days old fed diets with different inclusions of cassava bagasse and annatto colorific were evaluated. 308 slow-growing broilers were used in a completely randomized experimental design, in a factorial scheme with an additional treatment 3 X 2 + 1, with three levels of annatto colorific as a pigmentant agent (1%, 2% and 3%), two...
Effect of roof painting of aviaries on thermal comfort, productive performance ...
Valadares,Leonora Ribeiro; Moreira,Joerley; Dalólio,Felipe Santos; Guimarães,Maria Clara de Carvalho; Tinôco,Ilda de Fátima Ferreira; Vaz,Diego PereiraSUMMARY The objective this study was to evaluate the thermal comfort, performance and the physiological variables of 21-42 day of age broiler chickens housed in aviaries with painted and not painted fiber cement roof. A completely randomized design was used in a split-plot design where the plots were composed of the sheds (painted and not painted roof) and the subplots were the evaluation hours (6h00, 9h00, 12h...
EXIGÊNCIA DE METIONINA + CISTINA PARA FRANGAS DE REPOSIÇÃO NA FASE INICIAL (1 A...
D´Agostini,Priscila; Gomes,Paulo Cezar; Mello,Heloisa Helena de Carvalho; Calderano,Arele Arlindo; Sá,Luciano Moraes; Rostagno,Horacio SantiagoResumo Objetivou-se determinar a exigência de metionina + cistina total para frangas na fase inicial e verificar seu efeito sobre a fase de postura. Na primeira fase experimental, 720 aves (50% Lohmann LSL e 50% Lohmann Brown) com uma semana de idade foram distribuídas em delineamento experimental inteiramente casualizado, em esquema fatorial 5 x 2 (níveis de met + cis e linhagens), com quatro repetições e 18 a...
Metabolizable energy levels for meat quails from 15 to 35 days of age
Muniz,Jorge Cunha Lima; Barreto,Sérgio Luiz de Toledo; Mencalha,Raquel; Viana,Gabriel da Silva; Reis,Renata de Souza; Ribeiro,Cleverson Luís NascimentoABSTRACT: This trial was carried out to evaluate the effects of dietetic metabolizable energy levels on performance and carcass traits of meat quails from 15 to 35 days old. Five hundred sixty, 15-d old, meat quails were randomly assigned to five treatments (2.850; 2.950; 3.050; 3.150 e 3.250kcal of ME kg-1 of diet), with eight replicates and fourteen birds per experimental unit. Feed intake, protein and lysine...