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| Tizziani,Tarciso; Donzele,Rita Flávia Miranda de Oliveira; Donzele,Juarez Lopes; Balbino,Eric Márcio; Silva,Amanda Dione; Figueiredo,Érika Martins de; Muniz,Jorge Cunha Lima; Jacob,Rodrigo de Freitas. |
| ABSTRACT This study was conducted to evaluate the effect of reduction of the available phosphorus (avP) in diets supplemented with 500 FTU/kg phytase on performance, carcass characteristics, and bone mineralization of broilers aged 22 to 42 days kept in a high-temperature environment. A total of 336 Cobb broilers with an average initial weight of 0.883±0.005 kg were distributed in a completely randomized design with six treatments - a positive control (0.354 and 0.309% avP without addition of bacterial phytase for the phases of 22 to 33 and 34 to 42 days, respectively), and another five diets with inclusion of phytase (500 FTU) and reduction of the level of avP (0.354, 0.294, 0.233, 0.173, and 0.112%; and 0.309, 0.258, 0.207, 0.156, and 0.106% for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone mineralization; Carcass characteristics; Heat stress; Performance; Thermal environment. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000200048 |
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| Ribeiro,Cleverson Luís Nascimento; Barreto,Sergio Luiz de Toledo; Reis,Renata de Souza; Muniz,Jorge Cunha Lima; Donzele,Juarez Lopes; Gomes,Paulo Cezar; Vargas Júnior,José Geraldo de; Albino,Luiz Fernando Teixeira. |
| The objective of this study was to estimate the digestible lysine requirement of Japanese quails in the egg-laying phase. A total of 336 female Japanese quails (Coturnix coturnix japonica) of average initial age of 207 days were distributed in a completely randomized experimental design, composed of 6 treatments (lysine levels) with 7 replicates and 8 birds per experimental unit, with duration of 84 days. Experimental diets were formulated from a basal diet, with corn and soybean meal, with 2.800 kcal ME/kg and 203.70 g/kg crude protein, showing levels of 9.50; 10.00; 10.50; 11.00; 11.50; and 12.00 g/kg digestible lysine; diets remained isoprotein and isocaloric. The following variables were studied: feed intake (FI); lysine intake (LI); egg production per... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coturnix coturnix japonica; Digestible amino acids; Egg production; Performance variables. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000700005 |
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| Muniz,Jorge Cunha Lima; Barreto,Sérgio Luiz de Toledo; Mencalha,Raquel; Viana,Gabriel da Silva; Reis,Renata de Souza; Ribeiro,Cleverson Luís Nascimento; Hannas,Melissa Izabel; Albino,Luiz Fernando Teixeira. |
| ABSTRACT: 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 intake and feed conversion decreased linearly as the metabolizable energy content of diets increased (P<0.01), whereas metabolizable energy intake, body weight, weight gain and viability were not affected (P>0.05) by the treatments. Diets did not influence (P>0.05) carcass traits as dry matter, moisture and protein content in carcass.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coturnix coturnix sp; Energy: protein ratio; Performance. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001001852 |
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| Tizziani,Tarciso; Donzele,Rita Flavia Miranda de Oliveira; Donzele,Juarez Lopes; Silva,Amanda Dione; Muniz,Jorge Cunha Lima; Jacob,Rodrigo de Freitas; Brumano,Gladstone; Albino,Luiz Fernando Teixeira. |
| ABSTRACT 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 43.27±1.08 g were housed in climatic chambers and distributed in a completely randomized design. The study consisted of a 4 × 2 factorial, with four Ca reduction levels (0, 10, 20, and 30%) and two vitamin D sources (2760 IU of D3 or 25-OH-D3). The performance of animals at 21 and 42 days of age was not affected by Ca reduction by up to 30%, regardless... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bone mineralization; Digestibility; Meat quality; Performance. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100531 |
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