Luciana Maria Garcia de Souza

Universidade Estadual de Maringá, Maringá, Paraná, Brazil

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Publications (11)1.08 Total impact

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    ABSTRACT: The aim of this work was to evaluate the effect of dietary chromium supplementation on performance, carcass yield, meat quality, cholesterol level on the breast and blood biochemical parameters on broilers. It was used a complete randomized experimental design with five levels of chromium tripicolinate (0, 150, 300, 450 and 600 µg/kg of chromium) and six replicates with 50 broilers per experimental unit. The use of chromium tripicolinate had no effect on the performance of broilers. The levels of chromium did not change the carcass yield neither the breast pH of the broilers at 42 days of age. At evaluation of dry matter composition, crude protein and ether extract of breast meal, only the percentage of ether extract was quadractly affected by the dietary chromium level. Chromium level of 218.2 µg reduced the ether extract percentage by 7.03 when compared to the lack of chromium. The addition of chromium in the diets did not influence the total cholesterol level in the breast meat but it did change the levels of HDL at 14 old, the VLDL and triglicerides at 21 days old. The dietery suplementation of chromium did not influence the performance neither the carcass yield. Levels of chromium ranging from 218.2 to 360.3 ì g affects fat meat and levels of blood lipids of broiler chickens.
    Full-text · Article · Apr 2010
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    ABSTRACT: The aim of this work was to evaluate the effect of dietary chromium supplementation on performance, carcass yield, meat quality, cholesterol level on the breast and blood biochemical parameters on broilers. It was used a complete randomized experimental design with five levels of chromium tripicolinate (0, 150, 300, 450 and 600 mu g/kg of chromium) and six replicates with 50 broilers per experimental unit. The use of chromium tripicolinate had no effect on the performance of broilers. The levels of chromium did not change the carcass yield neither the breast pH of the broilers at 42 days of age. At evaluation of dry matter composition, crude protein and ether extract of breast meal, only the percentage of ether extract was quadractly affected by the dietary chromium level. Chromium level of 218.2 mu g reduced the ether extract percentage by 7.03 when compared to the lack of chromium. The addition of chromium in the diets did not influence the total cholesterol level in the breast meat but it did change the levels of HDL at 14 old, the VLDL and triglicerides at 21 days old. The dietery suplementation of chromium did not influence the performance neither the carcass yield. Levels of chromium ranging from 218.2 to 360.3 l g affects fat meat and levels of blood lipids of broiler chickens.
    No preview · Article · Apr 2010 · Revista Brasileira de Zootecnia
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    Full-text · Article · May 2009 · Acta Scientiarum Animal Sciences
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    ABSTRACT: Dois experimentos foram conduzidos com o objetivo de determinar o valor energético do milheto (Pennisetum glaucum) ADR 7010 e avaliar o desempenho e a viabilidade econômica dos frangos de corte alimentados com rações contendo níveis crescentes de milheto ADR 7010. No Experimento 1 foram utilizados 72 frangos de corte com 21 dias de idade em um delineamento inteiramente casualizado com dois tratamentos, seis repetições de nove aves cada. A energia metabolizável aparente do milheto foi de 3.362,24 kcal kg-1 de matéria seca e 3.066,00 kcal kg-1 de matéria natural e o teor de proteína bruta de 12,6%. No Experimento 2 foram utilizados 960 pintos de um dia de idade, distribuídos em um delineamento inteiramente casualizado com seis tratamentos, cinco repetições e 32 aves cada. Os tratamentos consistiram de seis níveis de substituição do milhopelo milheto, variando de 0 a 100%. Observou-se efeito linear dos níveis crescentes do milheto sobre o ganho de peso e consumo de ração no período de 1-21 dias e no ganho de peso, no período de 1-41 dias de idade. Em rações isoenergéticas e isoaminoacídicas, omilho pode ser substituído pelo milheto ADR 7010 em nível de 100%, o que corresponde a cerca de 60% de inclusão de milheto nas rações para frangos de corte, sem prejuízos no desempenho das aves e com maior viabilidade econômica. Two experiments were carried out to determine the energy value, performance and economical feasibility of broiler chickens feeding on different levels of ADR 7010 pearl millet. Experiment 1was conducted by using 72 broilers with 21 days of age distributed in metabolism cages. A completely randomized experimental design was conducted, with two treatments, six replicates and nine broilers per experimental unit. Pearl millet replaced 40% of reference diet. Values of apparent metabolizable energy of ADR 7010 pearlmillet were 3,362 kcal kg-1 (as dry matter) and 3,066 kcal kg-1 (as feed basis) and 12.6% crude protein. Experiment 2 utilized 960 1-day-old chicks distributed in a completely randomized experimental design, with six treatments (0; 20; 40; 60; 80 and 100% ofpearl millet inclusion), five replicates and 32 birds per unit. A linear effect was reported of increasing dietary pearl millet levels on weight gain and feed intake in the starting period (1-21 days) and total period (1-41 days). The results were satisfactory for 100%replacement corn, meaning ADR 7010 pearl millet can be included at about 60% in broiler diets without compromising bird performance. Considering the performance results, pearl millet is economically efficient.
    No preview · Article · Jan 2009 · Acta Scientiarum Animal Sciences
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    Full-text · Article · Nov 2007 · Acta Scientiarum Animal Sciences
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    ABSTRACT: O objetivo deste trabalho foi determinar o efeito da utilização de um complexo multienzimático sobre o desempenho e qualidade dos ovos de poedeiras comerciais. Foram utilizadas 336 poedeiras comerciais, HyLine W36, com 29 semanas de idade distribuídas em um delineamento inteiramente casualizado com 7 tratamentos e 6 repetições de 8 aves cada. Os tratamentos consistiram de uma dieta basal suplementada com o complexo enzimático nos níveis de 400 ou 500 ppm com valorização do nível de proteína, energia metabolizável e aminoácidos do farelo de soja em 5/5/5, 7/7/7 e 7/7/9%, respectivamente. As variáveisestudadas foram: consumo de ração (g ave-1 dia-1), conversão alimentar (kg dz-1 de ovos), peso médio dos ovos (g), produção de ovos (%), gravidade específica (g mL-1), Unidade Haugh, coloração da gema, percentuais de sólidos totais, de gema, clara e casca (%),espessura da casca (mm) e composição bromatológica das excretas. A adição do complexo multienzimático apresentou resultados produtivos e de qualidade dos ovos semelhantes à dieta controle. The present study aimed to evaluate the effects of a commercial enzyme complex on the performance and egg quality of commerciallaying hens. A total of 336 29-week old Hyline W36 layers were allocated to a completely randomized experimental design with seven treatments and six replications of eight birds each. The treatments consisted of the basal diet supplemented with inclusion of (500 or 400ppm), overestimating the percentages of protein, ME and amino acids of the soybean meal by 5:5:5, 7:7:7 and 7:7:9, respectively. The studied variables were: feed intake (g bird-1 day-1), feed:egg (kg feed-1 egg dozen-1), egg weight (g), egg laying percentage (hen day-1) specific gravity (g ml-1), Haugh Unit, color of the egg yolk, total solids percentage (%), egg yolk percentage, albumen and eggshell (%), eggshell thickness (mm) and chemical compositionof hen manure. The inclusion of enzyme complex in the diet resulted in similar productive performance and egg quality compared to the control diet.
    No preview · Article · Jan 2007 · Acta Scientiarum Animal Sciences
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    ABSTRACT: Este estudo foi realizado com o objetivo de determinar o melhor nível de sal comum para codornas japonesas (Coturnix coturnix japonica) em postura. Foram utilizadas 336 codornas com 13 semanas de idade, alojadas em gaiolas de 118 cm2/codorna durante 84 dias (quatro ciclos de 21 dias). O delineamento experimental utilizado foi inteiramente casualizado, com sete tratamentos (0; 0,15; 0,20; 0,25; 0,30; 0,35 e 0,45% de sal comum) e seis repetições de oito aves por parcela. A cada 21 dias, foram avaliados os parâmetros de desempenho (postura, consumo de ração e conversão alimentar) e qualidade dos ovos (peso médio do ovo, massa de ovo, porcentagem e espessura da casca e Unidade Haugh). Os dados obtidos foram submetidos às análises de variância e de regressão e as médias comparadas pelo teste Dunnett a 5% de significância. A equação de regressão ajustada não foi significativa para os parâmetros avaliados em função dos níveis de sal na dieta. Entretanto, pela comparação entre as médias, observou-se que, nos tratamentos com a adição de sal, as aves apresentaram melhor desempenho produtivo e qualidade externa dos ovos, sendo que o nível de 0,15% de sal (equivalente a 0,10% de Na e 0,12% de Cl) foi suficiente para obtenção destes resultados.
    Full-text · Article · Dec 2006
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    ABSTRACT: The aim of this experiment was to determine the best level of salt for Japanese laying quails (Coturnix coturnix japonica). Three hundred and thirty-six quails with 13 weeks of age were housed in cages with 118 cm2/quail for 84 days (four cycles of 21 days each). The experiment was analyzed as a complete randomized design with seven treatments (0, 0.15, 0.20, 0.25, 0.30, 0.35, and 0.45% of salt) with six replicates of eight quails per pen. Every 21 days, the productive performance (% of production, feed intake and feed gain ratio [kg/kg and kg/dozen]) and egg quality (average egg weight, egg mass, eggshell percentage and thickness and Unit Haugh) were evaluated. Data were submitted to analyses of variance and regression, and the means, compared by Dunnett test at 5% of significance. Regression equation showed no treatment effect on productive performance. However, by the comparison among the means it was observed that the birds fed diet with salt addition showed higher values of performance and external egg quality than control (without salt). The 0.15% salt level (equivalent to 0.10% of Na and 0.12% of Cl) was sufficient to obtain these results.
    Full-text · Article · Dec 2006 · Revista Brasileira de Zootecnia
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    ABSTRACT: The objective of this trial was to determine the energy value of oat, barley, cassava residue and linseed grain (whole and milled) for Japanese quails (Coturnix coturnix japonica). Three hundred and sixty 40-d male quails were assigned to a completely randomized design with six treatments (reference diet + five feedstuffs), six replications and ten birds per pen. The total feces collection was the used methodology. The feedstuffs evaluated were used at a level of 20% replacing the energy source of the reference diet (RD) that was based on corn and soybean meal. The gross energy metabolization coefficient (GEMC) of oat, barley and linseed were higher than the cassava residue. The GEMC (%), apparent metabolizable energy (kcal/kg) and apparent correct metabolizable energy values for nitrogen (kcal/kg) were, respectively: 75.37; 3,425 and 3,395 for oat milled; 75.73; 3,253 and 3,198 for barley milled; 70.76; 2,312 and 2,316 for cassava residue; 76.53; 3,774 and 3,704 for linseed whole; 76.75; 3,955 and 3,929 for linseed milled.
    Full-text · Article · Jun 2006 · Revista Brasileira de Zootecnia
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    ABSTRACT: The objective of this trial was to determine the energy value of oat, barley, cassava residue and linseed grain (whole and milled) for Japanese quails (Coturnix coturnix japonica). Three hundred and sixty 40-d male quails were assigned to a completely randomized design with six treatments (reference diet + five feedstuffs), six replications and ten birds per pen. The total feces collection was the used methodology. The feedstuffs evaluated were used at a level of 20% replacing the energy source of the reference diet (RD) that was based on corn and soybean meal. The gross energy metabolization coefficient (GEMC) of oat, barley and linseed were higher than the cassava residue. The GEMC (%), apparent metabolizable energy (kcal/kg) and apparent correct metabolizable energy values for nitrogen (kcal/kg) were, respectively: 75.37; 3,425 and 3,395 for oat milled; 75.73; 3,253 and 3,198 for barley milled; 70.76; 2,312 and 2,316 for cassava residue; 76.53; 3,774 and 3,704 for linseed whole; 76.75; 3,955 and 3,929 for linseed milled.
    Full-text · Article · Jun 2006
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    Full-text · Article · Apr 2003 · Acta Scientiarum Animal Sciences